question stringclasses 91 values | options listlengths 2 4 | answer stringlengths 1 182 | question_type stringclasses 3 values | ts1 listlengths 1.02k 1.08k ⌀ | ts2 listlengths 1.02k 1.2k ⌀ | tid int64 1 102 | difficulty stringclasses 3 values | format_hint stringclasses 1 value | relevant_concepts listlengths 1 8 | question_hint stringclasses 90 values | category stringclasses 5 values | subcategory stringclasses 13 values | id int64 1 746 | ts listlengths 1.02k 1.2k ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Based on the given time series, how many different regimes are there? | [
"4",
"1",
"3"
] | 4 | multiple_choice | null | null | 40 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Regime Switching"
] | First identify the different patterns in the time series. It might be helpful to identify their individual starting and ending points. Then, count the number of different patterns. | Pattern Recognition | Regime Switching Detection | 101 | [
-0.010877570531709846,
-0.17015003733519085,
-0.28819893538585234,
-0.06443648089482103,
-0.07801261692646713,
-0.05593686849666602,
-0.05383209134512096,
0.05837810295599359,
-0.006801720825498923,
0.08999329474612022,
-0.007611457621443447,
0.008311756449653786,
-0.09153028652521711,
0.0... |
What type of trend does the time series exhibit in the latter half? | [
"Exponential",
"Linear",
"No trend"
] | Exponential | multiple_choice | null | null | 14 | medium | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend"
] | Focus on the pattern of growth or decline in the second half of the time series. | Pattern Recognition | Trend Recognition | 102 | [
0.005869649764100912,
0.01249523820421608,
0.011647741490819517,
0.011512776599731368,
0.0009164878851158614,
-0.016798562374118392,
-0.007616914492185441,
0.004372799608278573,
0.01162722754441977,
0.017780903550222125,
0.0023198874927688835,
0.016674821312932596,
0.01098021247644782,
0.0... |
The given time series has square wave pattern. How does its period change from the beginning to the end? | [
"Decrease",
"Remain the same",
"Increase"
] | Decrease | multiple-choice | null | null | 18 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Square Wave",
"Period"
] | Base on the definition of period, check if the time interval between two peaks remains the same. | Pattern Recognition | Cycle Recognition | 103 | [
-0.07394659897519035,
2.74601036573625,
2.9185930762247656,
2.91056808578727,
2.803420873417945,
2.8263036227916554,
2.994060744442544,
2.738893006462971,
2.8663711773185105,
2.8831097777603847,
2.8412554116625994,
2.7134105808411046,
2.9579418640777666,
2.741258151276078,
2.905995234452... |
The following time series has an anomaly. What is the most likely type of anomaly? | [
"Flip: the pattern is flipped at certain point in time",
"Speed up/down: the period of cyclic components is different from other parts of the time series",
"Spike: the pattern of time series is distorted by random large spikes"
] | Spike: the pattern of time series is distorted by random large spikes | multiple_choice | null | null | 64 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Spike Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | Anomaly is an observation that deviates from the general pattern in the time series. You should check if the time series has any sudden changes or unexpected patterns. If so, check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 104 | [
2.4719109836382875,
-2.2636644787104627,
-3.4384532704712463,
-0.9400159750442226,
-0.45184878937118733,
0.03631839630184812,
-3.977985921431303,
6.531993406857431,
0.37344842169332404,
1.98898713899399,
-0.5499973760043135,
-10.177983067200497,
-1.3555463681135618,
-0.8673791824405264,
... |
Is the mean stable over time in the given time series? | [
"No",
"Yes"
] | Yes | binary | null | null | 43 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Mean"
] | Check if the average value of the time series changes over time. | Pattern Recognition | First Two Moment Recognition | 105 | [
8.342526679271232,
8.256216352470627,
8.379677254714153,
8.439839386275642,
8.382362724372738,
8.308440646401056,
8.3715357575024,
8.344048313211434,
8.299192655003722,
8.482495729610466,
8.510435325524545,
8.40747658753833,
8.434476843764095,
8.248249479375426,
8.383162980138609,
8.25... |
What is the direction of the linear trend of the given time series, if any? | [
"Upward",
"Downward",
"No Trend"
] | Upward | multiple_choice | null | null | 4 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | Check if the time series values increase or decrease over time. | Pattern Recognition | Trend Recognition | 106 | [
-0.03541018062448496,
0.07706388017440952,
-0.0006040080230245869,
-0.08241699567917075,
0.1365475549231085,
-0.06342138096485277,
-0.03092854149413438,
0.08011731812284045,
0.028671697721845815,
-0.022197286359804728,
-0.06588143677686782,
-0.04993132331253562,
-0.045864979822866546,
0.00... |
What is the most likely linear trend coefficient of the given time series? Linear trend coefficient here refers to the end value of the linear trend. | [
"0",
"12.27",
"1.05"
] | 12.27 | multiple_choice | null | null | 2 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | The bigger the slope of the line, the higher the trend coefficient. | Pattern Recognition | Trend Recognition | 107 | [
-0.8031489532096401,
0.7318956259347343,
-0.9198364627606977,
0.17430606357682898,
-1.4194741935335031,
-0.7531924553468031,
-0.02883445404876306,
2.3113147346057397,
0.21971369503986982,
2.1389482369804016,
0.39040999281354827,
-0.3431328685970999,
2.033407396812434,
0.6923784111277407,
... |
What is the direction of the linear trend of the given time series, if any? | [
"Downward",
"Upward",
"No Trend"
] | Downward | multiple_choice | null | null | 4 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | Check if the time series values increase or decrease over time. | Pattern Recognition | Trend Recognition | 108 | [
-0.016920133126274044,
0.018556914309330378,
-0.015409252994780218,
0.024377361943637186,
0.0015411441215633576,
0.013690712515389196,
0.006474142599545,
0.019747256243967067,
-0.0016702052837726919,
-0.004871071693297929,
0.0028434479245514105,
-0.005259485015862293,
0.004619990846708466,
... |
You are given two time series which both have trend components. Do they have the same type of trend? | [
"Yes, they both have exponential trend",
"No, time series 1 has linear trend and time series 2 has exponential trend",
"No, time series 1 has exponential trend and time series 2 has log trend"
] | No, time series 1 has linear trend and time series 2 has exponential trend | multiple_choice | [
-0.07644308770652826,
0.6061464455743651,
1.2127311260900167,
1.7621433923831027,
2.1472732530425356,
2.56631232854116,
2.67345442620194,
2.583607071296779,
2.368687296229046,
2.042569158643227,
1.6949090097976491,
1.111934969563425,
0.518992191069737,
-0.04679260422325235,
-0.7549162806... | [
0.9629625202554879,
1.098250003191406,
1.3317108527347303,
1.5718870820463813,
1.5452946074724725,
1.7704116132183019,
2.146980046396065,
2.1664742893259046,
1.8472391021253738,
1.9544741866016557,
2.360921083617431,
2.292372251750424,
2.208042937632357,
2.2335767659995316,
2.10508097535... | 85 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend",
"Log Trend"
] | First identify the trend component for each time series. Then, check if they are equal. | Similarity Analysis | Shape | 109 | null |
Based on the given time series, how many different regimes are there? | [
"4",
"1",
"3"
] | 1 | multiple_choice | null | null | 40 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Regime Switching"
] | First identify the different patterns in the time series. It might be helpful to identify their individual starting and ending points. Then, count the number of different patterns. | Pattern Recognition | Regime Switching Detection | 110 | [
0.2836575435103595,
-0.293236037344858,
0.07662670819233552,
0.08050184915216785,
-0.018437488915693436,
-0.007854412113159098,
0.10197429349300514,
-0.030204040037363128,
-0.21751668290488307,
0.2696780105328772,
-0.30916409544480594,
0.27869373279862586,
0.18070057209939178,
-0.329881279... |
The given time series is a sine wave followed by a square wave patterns with different amplitude. How does the amplitude vary over time? | [
"Increase",
"Decrease",
"Remain the same"
] | Decrease | multiple-choice | null | null | 19 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | Focus on the amplitude instead of cyclic pattern change, check if the distance between the peak and the baseline changes. | Pattern Recognition | Cycle Recognition | 111 | [
0.14381065729850015,
0.9818638846801498,
2.000027154962045,
2.6777143281136655,
3.399675669373823,
3.954434391787901,
3.891477394497053,
3.978289532731771,
4.147382674405289,
3.4914567009701174,
3.067960926944229,
2.3736108000530742,
1.3172335516912208,
0.4589654999003136,
-0.46033288257... |
Is the noise in the time series more likely to be additive or multiplicative to the signal? | [
"Multiplicative",
"Additive"
] | Additive | binary | null | null | 57 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Additive Composition",
"Multiplicative Composition",
"Gaussian White Noise"
] | Additive noise is added to the signal, while multiplicative noise is multiplied to the signal. When a trend component is added with a white noise, the general trend still remains. When a trend component is multiplied with a white noise, the noise is amplified. Can you check if it is the case for the given time series? | Noise Understanding | Signal to Noise Ratio Understanding | 112 | [
0.10889401373641572,
-0.13191494156180789,
-0.13006760055501002,
-0.07205939745448293,
-0.004958272308663046,
-0.02036493896608362,
0.0023703100302591325,
-0.051693608709630044,
-0.03992163454995205,
-0.0795032960611472,
0.06223709116127844,
-0.10417588894389199,
0.10916009627425544,
0.079... |
The given time series is a swatooth wave followed by a square wave. What is the most likely period of the swatooth wave? | [
"53.95",
"36.94",
"13.87"
] | 36.94 | multiple-choice | null | null | 25 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sawtooth Wave",
"Square Wave",
"Period"
] | The sawtooth wave comes before the square wave. Begin by identifying where the sawtooth wave starts. Next, measure the time interval between two peaks. | Pattern Recognition | Cycle Recognition | 113 | [
-1.0756697186271902,
-0.9948344340047035,
-1.089364799586068,
-0.9701298735671958,
-0.882157326975654,
-0.7180185883755333,
-0.48115034787293653,
-0.4778984551089932,
-0.43835422664570345,
-0.5343682889735425,
-0.43006091752485004,
-0.33160813202760503,
-0.1529887847481055,
-0.361547270532... |
The given time series is a sine wave followed by a square wave. What is the most likely amplitude of the square wave? | [
"6.63",
"2.21",
"19.23"
] | 6.63 | multiple-choice | null | null | 24 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | After the sine wave, the square wave follows. Begin by identifying where the square wave starts. Next, measure the distance between its peak and baseline. | Pattern Recognition | Cycle Recognition | 114 | [
-0.03533268748220047,
0.5139556262134026,
0.8786124474976158,
1.4702430914484643,
1.5780043421317056,
2.0425863474419685,
2.192485671922907,
2.3682870175783024,
2.406973345614484,
2.814077609072196,
2.9224677368219716,
2.973520611142771,
2.8825858697624067,
2.945684610306559,
2.907967515... |
Which additive combination of patterns best describes the time series? | [
"SineWave + SquareWave",
"SineWave + SawtoothWave",
"SawtoothWave + SquareWave"
] | SineWave + SquareWave | multiple-choice | null | null | 16 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Sawtooth Wave",
"Additive Composition"
] | Imagine the shape of the time series as addition of two different patterns. | Pattern Recognition | Cycle Recognition | 115 | [
0,
1.494890653696118,
1.5708311937888035,
1.645702634552329,
1.718979806624794,
1.7901487232936864,
1.8587101857433694,
1.9241832845761015,
1.9861087730459275,
2.0440522883446337,
2.097607398344758,
2.1463984524289432,
2.190083216409113,
2.228355273053405,
2.260946171382895,
2.28762730... |
Is the given time series likely to have an anomaly? | [
"Yes, it's pattern is distorted by random spikes or noises",
"No",
"Yes, it's pattern is flipped at certain point in time"
] | Yes, it's pattern is flipped at certain point in time | binary | null | null | 63 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Flip Anomaly",
"Spike Anomaly"
] | Anomaly is an observation that deviates from the general pattern in the time series. You should check if the time series has any sudden changes or unexpected patterns. If so, check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 116 | [
0,
1.0374347890157383,
1.9408474960033404,
2.593661210338732,
2.9119185891164294,
2.855210281894561,
2.4319348702072046,
1.698205654474455,
0.7505465879182193,
-0.28667189855782055,
-1.277421747129809,
-2.091723555097594,
-2.622565525290429,
-2.7998328060357975,
-2.5994340887087697,
-2... |
The given time series is a swatooth wave followed by a square wave. What is the most likely period of the swatooth wave? | [
"36.17",
"58.28",
"10.65"
] | 58.28 | multiple-choice | null | null | 25 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sawtooth Wave",
"Square Wave",
"Period"
] | The sawtooth wave comes before the square wave. Begin by identifying where the sawtooth wave starts. Next, measure the time interval between two peaks. | Pattern Recognition | Cycle Recognition | 117 | [
-1.1232728769656024,
-1.1941745863077666,
-0.9010928635759433,
-1.0352905057287503,
-1.1265975461091546,
-0.8377779733197399,
-0.8046074526674,
-0.9684225158032442,
-0.6964399819928053,
-0.811417371855025,
-0.6685476821394363,
-0.8260800064544538,
-0.7266838521471323,
-0.7015540459883393,
... |
The time series has a trend and cyclic component added together. Which components are most likely present in the given time series? | [
"Exponential trend and sine wave",
"No trend and sawtooth wave",
"Linear trend and sine wave"
] | No trend and sawtooth wave | multiple-choice | null | null | 26 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend",
"Sine Wave",
"Sawtooth Wave",
"Additive Composition"
] | For trend, check if the slope is constant or changes over time. For cyclic component, check the overall shape of the time series. | Pattern Recognition | Cycle Recognition | 118 | [
3.5672592837390713,
3.4820255815225316,
3.7338987289596015,
3.791181507949497,
3.836775727170058,
4.088956533662423,
4.147110866618848,
4.2172782620306934,
4.152605229421229,
4.315118745857666,
4.458725011767742,
4.469814480056665,
4.618023594229086,
4.639078765930275,
4.767226054988481,... |
You are given two time series following similar pattern. Both of them have an anomaly. Do they have the same type of anomaly? | [
"No. They have different types of anomalies: cutoff and spikes",
"Yes, Time series 1 and time series 2 both have cutoff anomaly"
] | Yes, Time series 1 and time series 2 both have cutoff anomaly | binary | [
0,
0.43852959515322637,
0.79259533450712,
0.9939258060262572,
1.0035302552035137,
0.8191734462737033,
0.47580417603270936,
0.03885529049693796,
-0.40830035147065663,
-0.7803331684780571,
-1.0063152673706832,
-1.0433179271531152,
-0.884641402068725,
-0.5610993201790448,
-0.135111447246893... | [
0,
1.7536157986294543,
1.7581513595641836,
1.762686920498913,
1.7672224814336424,
1.7717580423683716,
1.776293603303101,
1.7808291642378302,
1.7853647251725595,
1.789900286107289,
-1.7037246283474317,
-1.6991890674127024,
-1.694653506477973,
-1.6901179455432438,
-1.6855823846085145,
-1... | 75 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Spike Anomaly"
] | For each time series, identify the type of anomaly based on the given definitions. Then, check if they have the same type of anomaly. | Anolmaly Detection | General Anomaly Detection | 119 | null |
You are given two time series following similar pattern. Both of them have an anomaly. Do they have the same type of anomaly? | [
"Yes, Time series 1 and time series 2 both have flip anomaly",
"No. They have different types of anomalies: cutoff and spikes"
] | Yes, Time series 1 and time series 2 both have flip anomaly | binary | [
0,
0.39926017053500784,
0.7874226843507546,
1.1536932406330072,
1.487875958104053,
1.7806520807775106,
2.0238347073780147,
2.210592581363616,
2.3356368242212113,
2.3953655076558378,
2.3879621127740305,
2.3134451848665263,
2.1736678264703055,
1.9722670425671824,
1.7145643225746021,
1.40... | [
0,
1.7536157986294543,
1.7581513595641836,
1.762686920498913,
1.7672224814336424,
1.7717580423683716,
1.776293603303101,
1.7808291642378302,
1.7853647251725595,
1.789900286107289,
1.7944358470420183,
1.7989714079767476,
1.8035069689114769,
1.8080425298462062,
1.8125780907809355,
1.8171... | 76 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Flip Anomaly",
"Spike Anomaly"
] | For each time series, identify the type of anomaly based on the given definitions. Then, check if they have the same type of anomaly. | Anolmaly Detection | General Anomaly Detection | 120 | null |
Given that following time series exhibit piecewise linear trend, how many pieces are there? | [
"2",
"1",
"4"
] | 2 | multiple_choice | null | null | 5 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Piecewise Linear Trend"
] | Check if the time series values increase or decrease linearly over time with different slopes. The slope change could be both positive and negative. | Pattern Recognition | Trend Recognition | 121 | [
0.011183886506958167,
-0.158376232525562,
0.11162923721391489,
0.010176345788195203,
-0.024934657489411663,
0.05225152451329157,
0.0313057123716357,
-0.09655193370255019,
-0.020230796830158996,
-0.17707916625831513,
0.02341390010795259,
0.1493051370429765,
-0.16178802976917933,
0.032117414... |
Both time series have a cyclic components. Which time series has a higher amplitude of the cyclic component? | [
"Time series 1 has higher amplitude",
"Time series 2 has higher amplitude"
] | Time series 1 has higher amplitude | binary | [
-0.03927241298257674,
2.15654891568353,
4.074755230845177,
5.83613573099631,
6.813553708374453,
7.295885088892996,
7.3145645151928615,
6.384704655294117,
5.160670360733347,
3.277581217389977,
1.395603937222981,
-0.7530776131808636,
-3.0478709780676945,
-4.885530981675805,
-6.111979122619... | [
0.09440292047350465,
0.3059536290242831,
0.5871867266557357,
0.8039380927444679,
1.090572129327565,
1.2415228606180935,
1.515444909858273,
1.4431687876091044,
1.7089906650308044,
1.584925300600901,
1.8826923599616463,
1.8250057880371413,
1.9103540337706697,
1.94809450689035,
1.7907675868... | 83 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | Amplitude refers to the height of the peak and the depth of the trough in the cyclic component. You should check the height of the peak and the depth of the trough for both time series. | Similarity Analysis | Shape | 122 | null |
The given time series is a sawtooth wave. What is the most likely amplitude of the sawtooth wave? | [
"15.76",
"2.95",
"8.31"
] | 15.76 | multiple-choice | null | null | 23 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sawtooth Wave",
"Amplitude"
] | Check the distance between the peak and the baseline. | Pattern Recognition | Cycle Recognition | 123 | [
-15.709221345752093,
-14.890741100313658,
-13.903739876807627,
-13.009916713866453,
-12.173203296593492,
-11.332844363463133,
-10.426806458637225,
-9.520712239502354,
-8.631003087120071,
-7.664125033171038,
-6.914118911396393,
-5.945341689435687,
-5.29344024250677,
-4.209608979313993,
-3... |
The time series has three cyclic pattern composed additively. Which cycle pattern is most dominant in the given time series in terms of amplitude? | [
"SawtoothWave",
"SquareWave",
"SineWave"
] | SawtoothWave | multiple-choice | null | null | 20 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Sawtooth Wave",
"Additive Composition",
"Amplitude"
] | The cyclic patterns have different period and amplitude. The dominant pattern is the one that has the highest amplitude. Identify the pattern with the highest peak. | Pattern Recognition | Cycle Recognition | 124 | [
-4.53840564217939,
-4.409257392808973,
-4.0897494060793464,
-3.9144639196270794,
-3.648519452502089,
-3.4692896018217243,
-3.2162100461480616,
-3.1180873294356233,
-2.8639474982083346,
-2.8601599883797615,
-2.5596604635388256,
-2.327173060046185,
-2.4009802305857915,
-2.1456525285441943,
... |
Does any part of the given time series, composed of several concatenated patterns, appear to be stationary? | [
"No",
"Yes"
] | No | binary | null | null | 32 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity"
] | You can try to identify different parts in the time series first, and see if any part is stationary. | Pattern Recognition | Stationarity Detection | 125 | [
0.029380155687917395,
0.0664903816562165,
-0.040570290843120804,
0.11727087803134495,
0.031127667070269538,
0.03427659927029678,
0.056993686419179276,
0.13081327544896101,
0.05978939897055227,
-0.008157889412009255,
0.03767621463885448,
-0.066261318404291,
0.040175617330731404,
-0.01518987... |
The given time series has sine wave pattern. How does its amplitude change from the beginning to the end? | [
"Decrease",
"Remain the same",
"Increase"
] | Increase | multiple-choice | null | null | 17 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Amplitude"
] | Base on the definition of amplitude, check if the distance between the peak and the baseline changes. | Pattern Recognition | Cycle Recognition | 126 | [
0.01164585646628604,
0.11669267978214751,
0.2916569654616637,
0.43598021439682,
0.6190427316043885,
0.6863326925294806,
0.843526289154395,
0.9317758895593856,
0.9871386341194872,
1.0780127621957476,
0.9844237089253134,
1.1231044779795807,
0.9549629527407274,
1.125689749786026,
1.05632284... |
The given time series has a cycle component and a trend component. Is it an additive or multiplicative model between the two components? | [
"Multiplicative",
"Additive"
] | Multiplicative | multiple_choice | null | null | 11 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Sine Wave",
"Additive Composition",
"Multiplicative Composition"
] | For a multiplicative composition, the amplitude of the cyclic component will increase or decrease depending on the trend component. | Pattern Recognition | Trend Recognition | 127 | [
-0.13006810239268538,
-0.008955610401251984,
-0.042831391450271164,
0.026956148081647827,
0.2804254083680437,
-0.038448596267123075,
0.12266201723032444,
0.026246661991078245,
0.029050956055874336,
0.19949920266268376,
0.09400601530077872,
0.23424112668635455,
0.059824278877018966,
0.18812... |
The given time series has a cycle component and a trend component. Is it an additive or multiplicative model between the two components? | [
"Additive",
"Multiplicative"
] | Additive | multiple_choice | null | null | 11 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Sine Wave",
"Additive Composition",
"Multiplicative Composition"
] | For a multiplicative composition, the amplitude of the cyclic component will increase or decrease depending on the trend component. | Pattern Recognition | Trend Recognition | 128 | [
-0.07904707025900422,
0.46896788901030984,
0.927898009981453,
1.4892390855145408,
1.7182852756171365,
2.409958097359194,
2.5364449165316767,
2.552916840784779,
2.7137893308500325,
2.60785915472609,
2.295183379430752,
2.1768590767747633,
1.716407282803015,
1.4125223797130677,
0.7603794036... |
Are the two time series flipped versions of each other despite noise? | [
"No, they are not flipped versions",
"Yes, they are flipped versions"
] | Yes, they are flipped versions | binary | [
-0.12186305757614986,
0.2796991474385896,
0.5486611362646561,
0.7233979537559687,
0.9591736775516664,
1.2113317876242518,
1.5707984558885886,
1.5568695160673638,
1.5329025397032707,
1.9028037027532596,
1.8180380621902748,
1.907613004724519,
1.8975236345284074,
2.0573922269672136,
1.98889... | [
0.06420031018686172,
-0.33916741314461674,
-0.5183652383307932,
-0.8543992161670254,
-1.0572168135456341,
-1.1750672330398095,
-1.200209922264037,
-1.6892511801606276,
-1.756057588020503,
-2.1481786072705407,
-1.8661737726518453,
-2.115272307596791,
-2.3434292657875355,
-1.905390664396241,... | 90 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | Both time series have a trend and a cyclic component. Then we say two time series are flipped versions of each other, we mean that the sign of each step is flipped. You should check if the sign of each step is flipped for both time series. At a high level, you should check if the time series are mirror images of each other. | Similarity Analysis | Shape | 129 | null |
The following time series has two types of anomalies appearing at different time points. What are the likely types of anomalies? | [
"Cutoff: the pattern of time series disappeared for certain point in time and became flat and Flip: the pattern is flipped at certain point in time",
"Speedup: the period of cyclic components is different from other parts of the time series and Flip: the pattern is flipped at certain point in time",
"Speedup: t... | Speedup: the period of cyclic components is different from other parts of the time series and Cutoff: the pattern of time series disappeared for certain point in time and became flat | multiple_choice | null | null | 68 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | You should first identify the two places where the anomalies appear. Then, you should check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 130 | [
0,
0.9493275893697217,
1.7547507379463214,
2.2943094607392718,
2.486586302988083,
2.303121952409596,
1.772755092208275,
0.9772246965613388,
0.038705388830808075,
-0.8988233637666796,
-1.6915331469855928,
-2.2176794618188054,
-2.396166938767199,
-2.1989158342588064,
-1.655144001992915,
... |
How does the linear trend in the first half of the time series compare to the trend in the second half? | [
"Different",
"Same"
] | Same | binary | null | null | 6 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Piecewise Linear Trend"
] | Check if the time series is a piecewise linear trend with different slopes in the first and second half. | Pattern Recognition | Trend Recognition | 131 | [
0.037709177539529626,
-0.0009810206754780873,
-0.006279451402697829,
0.0745876596571711,
0.02339751545838021,
-0.011980901264174861,
-0.06634323707523225,
0.10531661253013429,
0.02241119618043827,
-0.022287861663111315,
0.06058584613178739,
-0.08807210756675465,
0.11005790019531476,
0.0434... |
Weak stationarity requires the mean, variance to be constant over time. Does the following time-series exhibit weak stationarity? | [
"No, the variance is different overtime",
"No, the mean is different overtime",
"Yes"
] | No, the mean is different overtime | multiple_choice | null | null | 33 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity"
] | For mean, check if the average value changes over time. For variance, check if the degree of variation changes over time. | Pattern Recognition | Stationarity Detection | 132 | [
9.812967512854637,
9.908974413501056,
9.913382213595781,
9.967501907654762,
9.981925506583806,
9.704694726354274,
9.762765839187256,
9.614242977720673,
9.742775418883454,
9.703797575981307,
9.884852191314273,
9.678190695182735,
9.743685849201352,
9.744041084863065,
9.74807698176807,
9.... |
The given time series is a gaussian white noise process. What is the most likely noise level (variance)? | [
"3.49",
"1.21",
"14.52"
] | 14.52 | multiple_choice | null | null | 51 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | The noise level refers to the standard deviation of the noise. You should check the degree of variation of the time series over time. You can estimate the standard deviation by observing the average distance between the data points and the mean. | Noise Understanding | White Noise Recognition | 133 | [
-2.5867431097207674,
-2.8229462777066954,
-10.229660373460812,
6.94109066946038,
-13.300941885600459,
10.342107929577033,
14.314273737821937,
12.42178277619797,
-7.248169532206798,
2.1004358165696972,
9.632535558032126,
3.954270389740906,
-6.24253991106814,
23.344805082794622,
-7.5408389... |
The following time series has an anomaly. What is the most likely type of anomaly? | [
"Flip: the pattern is flipped at certain point in time",
"Speed up/down: the period of cyclic components is different from other parts of the time series",
"Spike: the pattern of time series is distorted by random large spikes"
] | Speed up/down: the period of cyclic components is different from other parts of the time series | multiple_choice | null | null | 64 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Spike Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | Anomaly is an observation that deviates from the general pattern in the time series. You should check if the time series has any sudden changes or unexpected patterns. If so, check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 134 | [
-2.9014286128198323,
-2.7553194569480066,
-2.6092103010761813,
-2.4631011452043556,
-2.31699198933253,
-2.170882833460704,
-2.0247736775888785,
-1.8786645217170532,
-1.7325553658452273,
-1.5864462099734018,
-1.4403370541015763,
-1.2942278982297504,
-1.1481187423579249,
-1.0020095864860994,... |
Seasonal stationarity refers to a time series where statistical properties remain constant within seasons but may vary between seasons. Does the time series exhibit seasonal stationarity? | [
"No",
"Yes"
] | No | binary | null | null | 37 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity",
"Sine Wave",
"Linear Trend",
"Gaussian White Noise"
] | Determine if the statistical properties of the series are constant within seasons across years. | Pattern Recognition | Stationarity Detection | 135 | [
0.2707187213055754,
0.7507617822083543,
0.7838989442335526,
1.1996093930425697,
1.7427557090283725,
1.927060171994377,
2.1480206959073307,
2.239192225973424,
2.617422832679707,
2.4850981440616695,
2.328476166581043,
1.9768929030318203,
1.5272249605361223,
1.1782224339076297,
1.1330210763... |
What type of noise is present in the given time series? | [
"Gaussian White Noise",
"No significant noise",
"Red Noise"
] | Red Noise | multiple_choice | null | null | 62 | medium | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise",
"Red Noise"
] | Observe the pattern of fluctuations in the time series. | Noise Understanding | Signal to Noise Ratio Understanding | 136 | [
0.03858704427094915,
-0.19135304052465485,
0.21614171582668018,
0.10542433349073234,
0.09006825274437492,
-0.12865546505634143,
0.17091565336411763,
-0.1586829332298748,
-0.06195610717156903,
-0.10372725651514804,
0.011736982485876624,
-0.09704116717454728,
-0.21992097458479481,
-0.2705810... |
Does time series 1 granger cause time series 2? | [
"Yes, time series 1 granger causes time series 2",
"No, they are not granger causal",
"No, time series 2 granger causes time series 1"
] | No, they are not granger causal | binary | [
-0.031742814772969974,
-0.7215802452659482,
-1.6780104854334268,
-2.2987643855581434,
-2.744415119344141,
-2.8391193829557917,
-2.8547461970969663,
-2.760568389815187,
-2.45530380054492,
-2.137967465122404,
-1.716222825608591,
-1.139047509324838,
-0.7539703785832078,
-0.4515861014250247,
... | [
0.01253958705939128,
0.005071214282057425,
0.038990648658066965,
0.03642264618652104,
0.04078393277540089,
0.10535112567208219,
0.06163923626680506,
0.012420797958608986,
0.11061166729124342,
0.0821361326042619,
0.09464316548975604,
0.0655973865797422,
0.05868779088088181,
0.05615130898817... | 101 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Granger Causality"
] | Granger causality is a statistical concept that determines whether one time series can predict another. While you cannot perform the statistical test, you can check if one time series can predict the other by shifting the time series by a certain number of steps. Do they look simiar after the shift? | Causality Analysis | Granger Causality | 137 | null |
Two time series are given with different cyclic components. Which time series has a higher period of the cyclic component? | [
"Time series 1 has higher period",
"Time series 2 has higher period"
] | Time series 2 has higher period | binary | [
-0.18881851218218101,
1.9411809019776278,
1.8533068914794464,
1.7029614969231093,
1.7747054995646512,
1.7266037032043486,
1.8991388227462531,
1.9457316803726719,
1.9186813254220847,
1.8766986872263136,
1.9061715103741796,
1.8024982224318198,
1.8405532055764633,
-1.676763630576773,
-1.696... | [
0.025280783839586648,
1.3042256680642619,
1.3675947911652206,
1.3043965467036094,
1.274065649241459,
1.2715844202229332,
1.1403660679801944,
1.17468330521168,
1.104297269745082,
1.2928948827532787,
1.337953519940394,
1.3138332410537332,
1.3386111975904007,
1.3943910063645184,
1.193893955... | 84 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Period"
] | Period refers to the length of one cycle in the cyclic component. You should check the distance between two peaks or two troughs for both time series. | Similarity Analysis | Shape | 138 | null |
The given time series has a decreasing trend, is it a linear trend or log trend? | [
"Linear",
"Log"
] | Linear | multiple_choice | null | null | 8 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Log Trend"
] | Check if the slope of the time series is constant or changes over time. | Pattern Recognition | Trend Recognition | 139 | [
0.27817469932209393,
-0.06219998938652382,
-0.045174416644088125,
-0.31936702816568224,
0.2924850321561898,
-0.048664877515835925,
0.163341488426676,
-0.5290964279198259,
-0.24028083615671078,
0.04033317920020672,
-0.4153110354810912,
0.06288813663243548,
-0.19312003341939815,
-0.224253515... |
The given time series is a random walk process. What is the most likely noise level (variance) at each step? | [
"1.5",
"17.6"
] | 1.5 | multiple_choice | null | null | 54 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Red Noise"
] | The noise level refers to the standard deviation of the noise. You should check the degree of variation of the time series over time. You can estimate the standard deviation by observing the average distance between the data points and the past value. | Noise Understanding | Red Noise Recognition | 140 | [
-0.012666185981209804,
0.11340464305789422,
0.10892317898803645,
0.0027580128049274222,
0.08851817612526815,
0.0578547119909011,
0.06489527823939956,
-0.18323085826008506,
0.027994559060913762,
-0.07844923549603793,
-0.2600682512841017,
-0.07236770963697298,
-0.24110666954788268,
-0.110213... |
The following time series has two types of anomalies appearing at different time points. What are the likely types of anomalies? | [
"Cutoff: the pattern of time series disappeared for certain point in time and became flat and Flip: the pattern is flipped at certain point in time",
"Speedup: the period of cyclic components is different from other parts of the time series and Flip: the pattern is flipped at certain point in time",
"Speedup: t... | Speedup: the period of cyclic components is different from other parts of the time series and Flip: the pattern is flipped at certain point in time | multiple_choice | null | null | 68 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | You should first identify the two places where the anomalies appear. Then, you should check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 141 | [
0,
0.5663879490966458,
1.0537409017463601,
1.3941788417024124,
1.5405573019226617,
1.4731213231960663,
1.2022936642870692,
0.7672037362953696,
0.23016488707819932,
-0.33212048952976814,
-0.8393867109505309,
-1.2191334848045579,
-1.4168585825662534,
-1.4037502708589713,
-1.180753792505165... |
You are given two Autoregressive processes AR(1). Which of the following time series has higher standard deviation for their random component? | [
"Time series 2",
"Time series 1"
] | Time series 1 | multiple_choice | [
18.699320292300776,
9.495455445771114,
16.592389243265345,
19.41336577175808,
-2.1487871093571336,
-4.06233046348851,
2.276257576926537,
2.2712866875742317,
25.96882405179681,
30.126453734150854,
22.671847665507386,
25.601944215286778,
34.9112104904747,
25.178943616418877,
14.65848670857... | [
0.32354051304295517,
1.1268267269065728,
1.3878953630748612,
1.0953013354200418,
-0.0951434012189536,
1.017088131356028,
0.6518154620314152,
0.06904903688906489,
-1.1124093047180583,
-0.8326789156088564,
0.22729627967485433,
0.20549100360829228,
0.08178633950225986,
-1.4342529789085563,
... | 61 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"AutoRegressive Process",
"Variance"
] | The standard deviation of the noise component is related to the average distance between the data points and their past values. You should check the degree of variation of the time series over time. Which time series has a higher change in average? | Noise Understanding | Signal to Noise Ratio Understanding | 142 | null |
What is the direction of the linear trend of the given time series, if any? | [
"No Trend",
"Upward",
"Downward"
] | No Trend | multiple_choice | null | null | 4 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | Check if the time series values increase or decrease over time. | Pattern Recognition | Trend Recognition | 143 | [
0.006832786352122087,
0.006912614441645419,
0.00684608508800507,
0.006932572961484764,
0.006841900248686789,
0.00690591197719104,
0.006786847415915632,
0.006962462257257593,
0.006935884414141861,
0.006939107451831103,
0.006898484032985909,
0.006856611006318254,
0.007013698629783576,
0.0070... |
One type of noise in time series is white noise. Is the given time series noisy (noise dominates other patterns) based on your understanding of white noise? | [
"No",
"Yes"
] | No | binary | null | null | 55 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | When we say a time series is noisy, it typically refers to there are random fluctuations that disrupt the overal pattern of the time series. Can you check if it is the case for the given time series? | Noise Understanding | Signal to Noise Ratio Understanding | 144 | [
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8.428080945341643,
8... |
Is the given time series a white noise process? | [
"Yes",
"No"
] | No | binary | null | null | 50 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | White noise is a stationary process with a constant mean and variance. You should check if the time series has a constant mean and variance over time. Another important property is that the noise is uncorrelated over time. Does the time series seem to have these properties? | Noise Understanding | White Noise Recognition | 145 | [
-0.017876006048536956,
-0.09278957771233344,
-0.044607545125989106,
-0.04372670071839685,
-0.07012655770996588,
-0.068668272617701,
-0.09165934623386532,
-0.14422449943568313,
-0.11600911291924636,
-0.09026821993105894,
-0.09287677054056653,
-0.16173697041552093,
-0.18208834557164355,
-0.1... |
Both time series have a cyclic components. Which time series has a higher amplitude of the cyclic component? | [
"Time series 2 has higher amplitude",
"Time series 1 has higher amplitude"
] | Time series 1 has higher amplitude | binary | [
0.02573487513832925,
1.1074563319131567,
1.9499302361507236,
2.9250088446809426,
3.9157201115683384,
4.834995053840228,
5.535962412464188,
6.100128593368898,
6.625687233206508,
6.773717269799943,
6.985105960355694,
6.974249404674924,
6.727269069526895,
6.710429039854357,
5.78731112716958... | [
0.045427076765243046,
0.25904948779295833,
0.3586999119427143,
0.718900978005426,
0.8635982654691212,
1.200407189390879,
0.9819809195174889,
1.107635587939179,
1.0450699265601744,
1.1602021358001244,
0.9418927916067775,
1.1272024822559352,
0.9738729834394909,
0.6741153009518329,
0.390896... | 83 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | Amplitude refers to the height of the peak and the depth of the trough in the cyclic component. You should check the height of the peak and the depth of the trough for both time series. | Similarity Analysis | Shape | 146 | null |
Which of the following best describe the cycle pattern in the given time series? | [
"Period increase over time",
"Period decrease over time",
"Period remain the same over time"
] | Period decrease over time | multiple-choice | null | null | 29 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Period"
] | Check the time interval between two peaks, and see how it changes over time. | Pattern Recognition | Cycle Recognition | 147 | [
-0.016161093945725027,
0.06472350769428921,
0.32874837090413916,
0.4895052873434691,
0.7384652692599487,
0.6498447883158581,
1.017268967597944,
1.0001492079206007,
1.116859894317698,
1.3238367673350995,
1.395129892172564,
1.4204630365627982,
1.377596067098755,
1.540862505729336,
1.932258... |
Is time series 1 a lagged version of time series 2? | [
"No, time series 2 is a lagged version of time series 1",
"Yes",
"No, they do not share similar pattern"
] | No, time series 2 is a lagged version of time series 1 | multiple_choice | [
0.682167697642392,
-0.16709534067149784,
3.0939237414198915,
0.6253432158981611,
2.1810397949954723,
2.6372541677715127,
2.2955342580647917,
0.7618895289301079,
0.46149388791653045,
3.5653211965194243,
0.3370770072571663,
-0.9271221082703256,
-1.1651265197098328,
0.7495454285298195,
-0.7... | [
3.5653211965194243,
0.3370770072571663,
-0.9271221082703256,
-1.1651265197098328,
0.7495454285298195,
-0.7515047589771926,
-1.2560012127486522,
-2.9202969048977923,
2.981833817969054,
1.4755382726537596,
0.39377332113808433,
-0.723149709690002,
2.8285597350911305,
1.4796374737494224,
0.4... | 97 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair"
] | Focus on the time delay between the two time series. If time series 1 is a lagged version, then it should look the same to time series 2 after being shifted by a certain number of steps. Can you check this? | Causality Analysis | Granger Causality | 148 | null |
You are given two time series where one is the lagged version of the other. What is the most likely lagging step? | [
"Lagging step is between 60 to 75",
"Lagging step is between 30 to 45",
"Lagging step is between 5 to 10"
] | Lagging step is between 5 to 10 | multiple_choice | [
-0.01872880017516911,
-0.01665863038174751,
-0.022588192140204542,
0.0098692339516833,
-0.002499079053562078,
-0.010454070276884496,
-0.03028537423027195,
-0.03668653278053966,
-0.04553983413345035,
-0.03246303687122828,
-0.04700594633416891,
0.006928757769385882,
-0.02900936606421057,
-0.... | [
-0.03668653278053966,
-0.04553983413345035,
-0.03246303687122828,
-0.04700594633416891,
0.006928757769385882,
-0.02900936606421057,
-0.050425015221169975,
-0.02710772291184985,
-0.02135523037977356,
0.005713363710306618,
-0.014001084302481162,
-0.02639273455993598,
-0.018207735167162772,
-... | 98 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair"
] | You already know that one time series is the lagged version of the other. Shift the time series by lags proposed in the options and check which one looks the same as the other time series. | Causality Analysis | Granger Causality | 149 | null |
The given time series is a gaussian white noise process. What is the most likely noise level (variance)? | [
"0.36",
"10.1",
"3.73"
] | 10.1 | multiple_choice | null | null | 51 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | The noise level refers to the standard deviation of the noise. You should check the degree of variation of the time series over time. You can estimate the standard deviation by observing the average distance between the data points and the mean. | Noise Understanding | White Noise Recognition | 150 | [
-7.01943791826026,
-2.282898896166639,
-8.007406192783703,
14.72976795254422,
-3.141182605669596,
15.76917052095295,
-9.760913998025257,
-10.861015892609162,
4.4025535588037785,
5.313322323939579,
-15.571788170479,
-17.939886400560745,
-10.967542638920374,
10.250948312929111,
-4.73463721... |
What is the most likely autocorrelation at lag 1 for the given time series? | [
"Negative autocorrelation around -0.8",
"No autocorrelation",
"High positive autocorrelation around 0.8"
] | No autocorrelation | multiple_choice | null | null | 45 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Autocorrelation"
] | While it is hard to directly measure the autocorrelation for higher order lags, the autocorrelation at lag 1 can be approximated by observing the time series pattern. You can tell this by checking the sign and magnitude changes at each step compared to the previous step. | Pattern Recognition | AR/MA recognition | 151 | [
0.1146576550630531,
0.21862731119907372,
0.4025280194753323,
-0.5194996980392504,
0.27203888498877904,
-0.21121847400256227,
1.5173193142620542,
0.32769800741077343,
0.3058494684436937,
-0.9307335648911208,
-0.18351956517254364,
0.6320975456230895,
0.1968657603987853,
0.34381029231843135,
... |
Two time series are given with different cyclic components. Which time series has a higher period of the cyclic component? | [
"Time series 1 has higher period",
"Time series 2 has higher period"
] | Time series 1 has higher period | binary | [
0.08768880757786598,
0.10500027628090909,
0.3521666911797431,
0.6740139026569829,
0.839323675175141,
1.0101732010543878,
1.3154584510798941,
1.4009469472007425,
1.3600059135452605,
1.560898735716182,
1.5703074277355284,
1.7898083156939335,
1.7210217372446195,
1.6980411152154014,
1.662946... | [
-0.02406548863183524,
0.3132030067406669,
0.7036098657572952,
1.049205955007362,
1.3850371055996764,
1.7398472131523548,
1.6372225055808165,
1.7315636413116862,
1.6969465525498824,
1.326522310842006,
0.920911240540957,
0.6155731682472922,
0.21108804377631515,
-0.03044085455673254,
-0.777... | 84 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Period"
] | Period refers to the length of one cycle in the cyclic component. You should check the distance between two peaks or two troughs for both time series. | Similarity Analysis | Shape | 152 | null |
What type of trend does the time series exhibit in the latter half? | [
"Exponential",
"No trend",
"Linear"
] | Linear | multiple_choice | null | null | 14 | medium | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend"
] | Focus on the pattern of growth or decline in the second half of the time series. | Pattern Recognition | Trend Recognition | 153 | [
1.0132164285662295,
0.9824397584412952,
1.0065171941092905,
1.0079246255935035,
1.0188213447522427,
1.0015465012295217,
1.0022796961301361,
1.002621259301825,
1.0016080265178178,
0.9973294531089598,
0.9967976652357619,
1.0008360278737127,
1.0129392512140776,
1.0001486547137375,
1.0161373... |
You are given two time series following similar pattern. Both of them have an anomaly. What is the likely type of anomaly in each time series? | [
"Time series 1 with cutoff anomaly and time series 2 with flip anomaly",
"Time series 1 with flip anomaly and time series 2 with speed up/down anomaly",
"Time series 1 with cutoff anomaly and time series 2 with speed up/down anomaly"
] | Time series 1 with flip anomaly and time series 2 with speed up/down anomaly | multiple_choice | [
0,
0.7066066183063066,
1.3568755639028545,
1.8989434398213643,
2.289540058538977,
2.4974249124792673,
2.505868260618727,
2.3139797860408042,
1.9367793039220567,
1.4040039044002595,
0.7577462657203745,
0.049111700219820364,
-0.6658405731313947,
-1.3305495899836846,
-1.8924446499247807,
... | [
0,
0.23039674350718967,
0.4570114374964873,
0.676125362936421,
0.8841454012982388,
1.077664201389556,
1.2535172355106539,
1.4088357895270742,
1.5410949995388061,
1.6481561307711834,
1.72830239072671,
1.780267676905957,
1.803257777716424,
1.7969636715597783,
1.7615667014040115,
1.697735... | 74 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | You already know both time series have an anomaly. You should treat them separately and check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 154 | null |
The given time series has sine wave pattern. How does its amplitude change from the beginning to the end? | [
"Decrease",
"Remain the same",
"Increase"
] | Remain the same | multiple-choice | null | null | 17 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Amplitude"
] | Base on the definition of amplitude, check if the distance between the peak and the baseline changes. | Pattern Recognition | Cycle Recognition | 155 | [
0.06131893596249785,
0.537203318350096,
0.8938878212325859,
1.4855613703453876,
1.8135365852969092,
2.3827211642990203,
2.4443614425480886,
2.8016587617017312,
2.7317945808967603,
2.9504823460600043,
2.79392152699526,
2.7226688262203886,
2.655913051075341,
2.34447881911927,
1.99365676836... |
Given that following time series exhibit piecewise linear trend, how many pieces are there? | [
"4",
"1",
"2"
] | 1 | multiple_choice | null | null | 5 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Piecewise Linear Trend"
] | Check if the time series values increase or decrease linearly over time with different slopes. The slope change could be both positive and negative. | Pattern Recognition | Trend Recognition | 156 | [
-0.05209723154245036,
-0.08411294996447287,
-0.004246984587496582,
0.0325233034946917,
0.038837572413585576,
0.009926040843014957,
-0.07858447639179665,
0.009387811677087519,
-0.06922459138198889,
-0.06553735551039927,
-0.04400450718307437,
0.05664541668773203,
0.03242858831666885,
0.02200... |
The time series shows a structural break. What is the most likely cause of this break? | [
"Sudden shift in trend direction",
"Change in variance in underlying distribution",
"Abrupt frequency change"
] | Change in variance in underlying distribution | multiple_choice | null | null | 71 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Gaussian White Noise",
"Sine Wave"
] | You know the time series shows a structural break. Can you first identify the place where the break happens? Then, you should check the type of break based on the given options. | Anolmaly Detection | General Anomaly Detection | 157 | [
0.4807694791571691,
-1.1749081873830067,
-1.5153041647242453,
-4.63896861482201,
-0.43088646606057807,
2.718835989166089,
-1.682243105426378,
-2.8767861920753663,
0.8232407463484537,
1.1717159485062034,
-1.1071399822202064,
-0.6590325225530802,
0.49867677086907736,
-0.2939294826979019,
1... |
The given time series is a sine wave followed by a square wave. What is the most likely amplitude of the square wave? | [
"8.4",
"1.51",
"15.13"
] | 1.51 | multiple-choice | null | null | 24 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | After the sine wave, the square wave follows. Begin by identifying where the square wave starts. Next, measure the distance between its peak and baseline. | Pattern Recognition | Cycle Recognition | 158 | [
-0.22394530940806803,
0.3679023834479217,
0.9717267259420451,
0.9706949425908955,
1.47556967789675,
1.8166339193026066,
1.9533129725587142,
2.1330015972742915,
2.1224632705432724,
2.1092280697785344,
1.8752347455654343,
1.762416162119645,
1.7957495787902966,
1.3246686090094473,
0.9919378... |
The following time series has an anomaly. What is the most likely type of anomaly? | [
"Scale: the pattern is at obviously different scale at certain point in time",
"Cutoff: the pattern of time series disappeared for certain point in time and became flat"
] | Scale: the pattern is at obviously different scale at certain point in time | multiple_choice | null | null | 65 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Scale Anomaly",
"Wander Anomaly"
] | Anomaly is an observation that deviates from the general pattern in the time series. You should check if the time series has any sudden changes or unexpected patterns. If so, check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 159 | [
-2.46398788362281,
-2.3285166784412166,
-2.1930454732596236,
-2.0575742680780302,
-1.9221030628964373,
-1.7866318577148441,
-1.651160652533251,
-1.515689447351658,
-1.3802182421700648,
-1.2447470369884717,
-1.1092758318068785,
-0.9738046266252853,
-0.8383334214436922,
-0.7028622162620992,
... |
Does the given time series exhibit regime switching? | [
"Yes",
"No"
] | No | binary | null | null | 39 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Regime Switching"
] | Identify whether the time series exhibit different patterns over time. | Pattern Recognition | Regime Switching Detection | 160 | [
-0.027934367709293584,
0.040338613754454924,
-0.01709235459818218,
0.005148282418988407,
0.058573278308857044,
0.03591961126008115,
-0.01919788634126224,
0.03965392678382887,
-0.04677399876567356,
0.018076496629176583,
0.029283698891159338,
-0.02436104744048876,
-0.024782329004415796,
-0.0... |
One type of noise in time series is white noise. Is the given time series noisy (noise dominates other patterns) based on your understanding of white noise? | [
"Yes",
"No"
] | Yes | binary | null | null | 55 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | When we say a time series is noisy, it typically refers to there are random fluctuations that disrupt the overal pattern of the time series. Can you check if it is the case for the given time series? | Noise Understanding | Signal to Noise Ratio Understanding | 161 | [
1.7846240449157962,
0.33600907798644564,
2.4424988329734414,
-3.0803163910319276,
0.9564513876466378,
-0.5610028308548995,
1.6748791746180542,
-0.7885133791128247,
0.22696684919815263,
-0.2634170796726675,
-1.5141574628911258,
0.4494893331721238,
2.288387428139525,
-1.1591686412730364,
-... |
The following time series has an anomaly with short term disruption on its pattern. What is the likely pattern of the time series without the anomaly? | [
"Square wave times log trend",
"Sine wave times linear trend",
"Sawtooth wave times linear trend"
] | Sawtooth wave times linear trend | multiple_choice | null | null | 72 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Sawtooth Wave",
"Square Wave",
"Linear Trend",
"Log Trend",
"Wander Anomaly"
] | Wander anomaly brings short term disruption on the pattern. You should focus on the overall pattern of the time series without the anomaly. | Anolmaly Detection | General Anomaly Detection | 162 | [
0.04967141530112327,
-0.03572525152548184,
0.02449565561147138,
0.09717985527009906,
-0.0898639553970138,
-0.09766335655544611,
0.07939502237249212,
-0.002534939962546251,
-0.12345356055279355,
-0.015953382064034197,
-0.10672997554908033,
-0.09361555685193437,
-0.005976284947250939,
-0.201... |
Two time series are given with different cyclic components. Which time series has a higher period of the cyclic component? | [
"Time series 1 has higher period",
"Time series 2 has higher period"
] | Time series 2 has higher period | binary | [
0.1488857494839642,
2.1373295411265065,
2.119819808737829,
2.0953780403611293,
2.152764637408801,
2.025631421075524,
2.205545799352741,
2.1979257795190543,
2.113747355869594,
2.1023277529259303,
1.9196682428626497,
1.9682662019909105,
2.2020385963387716,
2.24391010438292,
-1.885106097427... | [
0.06696587568179337,
1.8439768035223592,
2.0880084889813912,
2.0451023370301114,
2.240565468076145,
2.0783242345585773,
2.1686599522494108,
2.1437969373071306,
2.0911440011265467,
2.221755765777205,
2.1570536195737104,
2.2177332402213206,
2.043886927181667,
2.198291864843245,
2.234439614... | 84 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Period"
] | Period refers to the length of one cycle in the cyclic component. You should check the distance between two peaks or two troughs for both time series. | Similarity Analysis | Shape | 163 | null |
Is the two time series lagged version of each other despite minor noise? | [
"No, they are not lagged versions at all",
"Yes, they are lagged versions"
] | No, they are not lagged versions at all | binary | [
0,
0.6094763068553961,
1.1691786875752486,
1.6334404502773607,
1.9644704517034413,
2.135471538742903,
2.1328517902153243,
1.957346092132343,
1.6239554965300076,
1.1607093678465654,
0.6063524617876712,
0.007147793813425042,
-0.5869408825343905,
-1.1263719740231986,
-1.5661141103858958,
... | [
0.9774503354369988,
1.0373559471088591,
0.9983366575851743,
1.0541312007441788,
1.2041887302110297,
1.3101319421516726,
1.3393925132949698,
1.3598751601380137,
1.3681431307090088,
1.3755539072942713,
1.402371621164733,
1.3690431329689265,
1.334728477633897,
1.295286572399836,
1.347876946... | 100 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair",
"Red Noise"
] | Try to shift one time series by a certain number of steps and check if it looks the same as the other time series despite the noise. If they are lagged versions, they should look very similar in general after the shift. | Causality Analysis | Granger Causality | 164 | null |
Is the two time series lagged version of each other despite amplitude difference? | [
"Yes, they are lagged versions",
"No, they are not lagged versions"
] | Yes, they are lagged versions | binary | [
0,
0.44449607301709143,
0.8772056883396135,
1.2866549232838078,
1.6619866378686916,
1.9932483676206032,
2.2716562275952974,
2.489827829819909,
2.64197803801118,
2.7240723688498445,
2.7339339721540195,
2.6713013532172245,
2.537835306719574,
2.337074878349432,
2.0743435218769686,
1.75660... | [
11.045126682628524,
10.657107837360979,
9.986500329793405,
9.051086290066902,
7.875669577372658,
6.491418069671022,
4.935037202228113,
3.2477966697934195,
1.4744361008210556,
-0.3380212786309223,
-2.1415155339018357,
-3.888224400561149,
-5.531831361070583,
-7.028753794384538,
-8.33929863... | 102 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair"
] | Try to shift one time series by a certain number of steps and check if it looks the same as the other time series despite the scale difference. If they are lagged versions, they should look very similar in general after the shift. | Causality Analysis | Granger Causality | 165 | null |
The given time series is a gaussian white noise process. What is the most likely noise level (variance)? | [
"0.84",
"8.18",
"5.84"
] | 5.84 | multiple_choice | null | null | 51 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | The noise level refers to the standard deviation of the noise. You should check the degree of variation of the time series over time. You can estimate the standard deviation by observing the average distance between the data points and the mean. | Noise Understanding | White Noise Recognition | 166 | [
0.43763260494722867,
5.777971504427483,
10.272442209899591,
4.1352958716960115,
-0.07536290779056759,
3.335245300376795,
11.699786988883204,
0.12466273685066054,
-1.858628506630454,
-9.0548957518233,
8.854112287441582,
4.481241451566011,
5.766569539565437,
4.4236762484944565,
0.843942261... |
Is the two time series lagged version of each other despite amplitude difference? | [
"No, they are not lagged versions",
"Yes, they are lagged versions"
] | No, they are not lagged versions | binary | [
0,
0.42065085757877263,
0.8331276388277925,
1.2294177517712979,
1.6018283829099098,
1.9431384739049966,
2.2467413784237884,
2.5067753808637008,
2.7182394984710325,
2.877092279105595,
2.9803316428352473,
3.0260541900361577,
3.0134928043275218,
2.943031807469585,
2.816199366829798,
2.635... | [
1.0980663127180177,
1.062196509048085,
1.0732655885079299,
1.1544254185028122,
1.2087720610708494,
1.0248671242338365,
1.007396341719708,
0.9898581432678742,
1.019738588160466,
1.0119522196615762,
0.9025307977911058,
0.8965198379191126,
0.8911564079441099,
0.9710954592999165,
0.998131332... | 99 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair"
] | Try to shift one time series by a certain number of steps and check if it looks the same as the other time series despite the scale difference. If they are lagged versions, they should look very similar in general after the shift. | Causality Analysis | Granger Causality | 167 | null |
You are given two time series with same underlying pattern but different noise level (variance). Which time series has higher magnitude of noise? | [
"Time series 1",
"Time series 2"
] | Time series 1 | multiple_choice | [
0.8967938961013101,
-1.3225013563159453,
-0.9169171175184057,
2.650807113052587,
-0.5085046633391932,
2.9437068481290005,
2.3321448113831496,
4.894183348102546,
2.0443747759564963,
4.012139241126288,
5.872869729504011,
7.220253593701788,
3.1461524669683296,
5.9018684944806346,
4.72524796... | [
1.14792674689681,
1.499225111946709,
1.645066951429517,
2.1284690945414346,
2.4020823009248833,
2.771470100180551,
2.8652498504068564,
3.513290886038413,
3.600982751994357,
3.68333528646791,
3.9390209697524896,
3.960213241326875,
3.778611012725823,
4.017165143024292,
3.9790442147297016,
... | 60 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Exponential Trend",
"Gaussian White Noise",
"Variance"
] | When the noise level is high, it can distort the pattern in the time series. Both time series have the same underlying pattern, but different noise level. To tell which time series has higher noise level, you should check the degree of distortion of the time series pattern. | Noise Understanding | Signal to Noise Ratio Understanding | 168 | null |
Does the given two time series have similar pattern? | [
"Yes, they have similar seasonal pattern",
"No, they have different seasonable pattern"
] | Yes, they have similar seasonal pattern | binary | [
0,
0.6097192741622467,
1.1786229642971662,
1.668627746894832,
2.0469319175882843,
2.288211189740788,
2.376313942723121,
2.305342437248085,
2.0800476194773245,
1.715511085081697,
1.236135493089981,
0.6740110128386678,
0.06676715667839826,
-0.5449461998062897,
-1.1201799855260093,
-1.620... | [
0,
0.585719359953037,
1.1185288526548964,
1.5502981251473231,
1.8420241045379622,
1.9673542679316913,
1.9149671484945272,
1.6895950390694345,
1.3115965093180952,
0.8151173522562759,
0.24500608765157358,
-0.34723734546197665,
-0.908113739837868,
-1.3869573712406433,
-1.7405127922600891,
... | 78 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave"
] | Pattern refers to the general shape of the time series. In this case, you see both time series have cyclic patterns. Do their behaviors at peak and trough look similar? | Similarity Analysis | Shape | 169 | null |
Does any part of the given time series, composed of several concatenated patterns, appear to be stationary? | [
"No",
"Yes"
] | Yes | binary | null | null | 32 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity"
] | You can try to identify different parts in the time series first, and see if any part is stationary. | Pattern Recognition | Stationarity Detection | 170 | [
0.2774740120816527,
-0.7863209430404561,
-1.113157999075002,
-1.0967931262868351,
-0.6704120343385062,
-0.946160072001212,
0.3429041237996542,
0.11229378861602961,
-1.2372156592983135,
-0.23039733056523914,
-0.181952529048469,
0.8183311061072722,
-0.4055927294268232,
-0.29971981834324146,
... |
The given time series has multiple trends followed by each other, what is the correct ordering of the trend components? | [
"Linear -> Exponential -> Log",
"Log",
"Linear -> Exponential",
"Exponential -> Linear -> Log"
] | Linear -> Exponential -> Log | multiple_choice | null | null | 9 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend",
"Log Trend"
] | Identify the different components first, and then check the assignment of each component. | Pattern Recognition | Trend Recognition | 171 | [
0.05089702578282305,
0.1215732164712395,
-0.07444493922762878,
0.09466130109005264,
-0.043058140451342916,
-0.11214337035562308,
-0.033714251814254574,
0.01360476627029799,
-0.09548643911523039,
0.17608818942003837,
-0.10738873839802889,
-0.0038786979174613226,
-0.03739219856780343,
0.1947... |
What is the most likely linear trend coefficient of the given time series? Linear trend coefficient here refers to the end value of the linear trend. | [
"10.41",
"0",
"3.34"
] | 10.41 | multiple_choice | null | null | 2 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend"
] | The bigger the slope of the line, the higher the trend coefficient. | Pattern Recognition | Trend Recognition | 172 | [
-0.5410922916097965,
0.20632462620850295,
-1.5494240370443053,
-0.741768374605666,
0.8277212888504981,
2.7439972682727816,
-1.9960163848579604,
-0.13810986224297137,
0.5105485459664172,
-0.5497301865580501,
0.9860285226242862,
-0.7902663868890977,
0.2822429796007792,
-0.411154687783854,
... |
Is the given time series likely to be stationary after removing the trend? | [
"Yes",
"No"
] | Yes | binary | null | null | 34 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity",
"Linear Trend",
"Exponential Trend"
] | Trend brings the overall shape of the time series up or down. Assume this effect is removed, does the time series satisfy the stationarity condition? | Pattern Recognition | Stationarity Detection | 173 | [
0.42473775711955786,
0.3921235185642636,
0.2607472495893532,
-0.0871149920514929,
0.48735591880780627,
-0.06040916391665044,
-0.7362571202345277,
0.12794057163236228,
-0.2904381821038601,
0.6651981611343087,
-0.30278558495271474,
-0.14669690091897405,
0.22771273494948988,
0.324468353088496... |
Seasonal stationarity refers to a time series where statistical properties remain constant within seasons but may vary between seasons. Does the time series exhibit seasonal stationarity? | [
"Yes",
"No"
] | Yes | binary | null | null | 37 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity",
"Sine Wave",
"Linear Trend",
"Gaussian White Noise"
] | Determine if the statistical properties of the series are constant within seasons across years. | Pattern Recognition | Stationarity Detection | 174 | [
0.019368195323273524,
0.6659159700668246,
0.5498141885930308,
1.2068273305080368,
0.6805663759923839,
0.46859217289043714,
1.3560269871206156,
1.1355429582025234,
2.5732178099990186,
1.1659742716807773,
1.5961819734637133,
0.6381133103647171,
1.1334735978928239,
1.2431367322054412,
0.821... |
Which of the following best describe the cycle pattern in the given time series? | [
"Period increase over time",
"Period remain the same over time",
"Period decrease over time"
] | Period decrease over time | multiple-choice | null | null | 29 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Period"
] | Check the time interval between two peaks, and see how it changes over time. | Pattern Recognition | Cycle Recognition | 175 | [
-0.032271503585831085,
0.23363025839866164,
-0.05101578138796195,
0.21669129350454774,
0.3293425353581634,
0.44983451614123615,
0.4698635341895162,
0.4213621505561932,
0.5429833719622917,
0.6460334510651401,
0.7548844995638071,
0.8863109300225321,
0.793405542448557,
0.72993641080885,
0.8... |
What type of noise is present in the given time series? | [
"Gaussian White Noise",
"No significant noise",
"Red Noise"
] | No significant noise | multiple_choice | null | null | 62 | medium | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise",
"Red Noise"
] | Observe the pattern of fluctuations in the time series. | Noise Understanding | Signal to Noise Ratio Understanding | 176 | [
8.807469711538296,
8.872967154159296,
8.670422712550966,
8.664887821232119,
8.734106601448941,
8.721228905795968,
8.88841321177811,
8.901321005981218,
8.761945878678665,
8.79368082174486,
8.79604653488555,
8.779366568739635,
8.650287890340802,
8.713705666648696,
8.64075508882062,
8.631... |
The given time series is a sine wave followed by a square wave patterns with different amplitude. How does the amplitude vary over time? | [
"Increase",
"Decrease",
"Remain the same"
] | Remain the same | multiple-choice | null | null | 19 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Amplitude"
] | Focus on the amplitude instead of cyclic pattern change, check if the distance between the peak and the baseline changes. | Pattern Recognition | Cycle Recognition | 177 | [
0.05417332619962195,
0.28160640325378045,
0.5113531454405927,
0.7812815391363459,
1.146983579712748,
1.2536640564551553,
1.6237344729526046,
1.5866290778961,
1.9933056545459482,
1.7989161032707113,
1.976901460076818,
1.8387599415242386,
2.009645723855116,
1.8549305631075488,
1.7076862817... |
Given that following time series exhibit piecewise linear trend, how many pieces are there? | [
"1",
"2",
"4"
] | 2 | multiple_choice | null | null | 5 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Piecewise Linear Trend"
] | Check if the time series values increase or decrease linearly over time with different slopes. The slope change could be both positive and negative. | Pattern Recognition | Trend Recognition | 178 | [
-0.12032933032228571,
0.0031834445668359607,
0.021628578072114192,
0.059342478067692044,
0.07972669359950722,
0.20074074427144034,
-0.05334060730270096,
-0.061391584409173416,
-0.1771126305627276,
0.07550402096840168,
-0.0783551651029929,
0.10059032657647562,
-0.036711965629478746,
0.18608... |
Two time series are given, one with an upward trend and the other with a downward trend. Do they exhibit similar patterns aside from the trend? | [
"No, they have different cyclic components",
"Yes, they share a similar pattern"
] | No, they have different cyclic components | binary | [
-0.1372569519295613,
0.5058959997894489,
1.2368264813079564,
1.6503438316534318,
2.2607450601416255,
2.5125187540831444,
2.7866333081233727,
2.9175912331317124,
2.9257370802325697,
2.7152747047900045,
2.502802073815727,
2.3453919781789425,
1.7377343606778755,
1.420276364536756,
0.8178199... | [
0.0971293095016974,
2.482722286637498,
2.3302906645246177,
2.3805083586547444,
2.284927673299856,
2.2262205089416636,
2.4036282494078223,
2.3536488086868665,
2.304312555885796,
2.2730509240044814,
2.2046729748269107,
2.23985277727134,
2.2346651231694676,
2.2272497947121424,
2.22451796394... | 89 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Sine Wave",
"Square Wave"
] | You should focus on the cyclic components of the time series. Do they have similar patterns aside from the trend? | Similarity Analysis | Shape | 179 | null |
The following time series has two types of anomalies appearing at different time points. What are the likely types of anomalies? | [
"Speedup: the period of cyclic components is different from other parts of the time series and Cutoff: the pattern of time series disappeared for certain point in time and became flat",
"Speedup: the period of cyclic components is different from other parts of the time series and Flip: the pattern is flipped at c... | Speedup: the period of cyclic components is different from other parts of the time series and Cutoff: the pattern of time series disappeared for certain point in time and became flat | multiple_choice | null | null | 68 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Flip Anomaly",
"Speed Up/Down Anomaly"
] | You should first identify the two places where the anomalies appear. Then, you should check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 180 | [
0,
0.7102428734302045,
1.2744043052702936,
1.5767527219473485,
1.5559507998964524,
1.2177989027451819,
0.6340299982542348,
-0.07259357703075017,
-0.7537852104938219,
-1.2665420276127566,
-1.5028551571411788,
-1.412149645113597,
-1.0117919030271887,
-0.38348166364991065,
0.343721948587231... |
Is the given time series likely to be stationary after removing the cycle component? | [
"No",
"Yes"
] | Yes | binary | null | null | 35 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity",
"Sine Wave",
"Square Wave"
] | Cycle component brings the cyclic pattern to the time series. Assume this effect is removed, does the time series satisfy the stationarity condition? | Pattern Recognition | Stationarity Detection | 181 | [
0.06803764904873742,
-0.1275750261903176,
0.12586612293812455,
0.2930096568729583,
0.9961965985241072,
0.7302331932072388,
1.0723983778996753,
0.9081645430288124,
1.2099430039209018,
0.9476191545168524,
0.7685264403759846,
0.8500974435732745,
1.258454080406578,
0.7877417778365646,
0.6496... |
Which of the given time series has higher variance? | [
"Time Series 2",
"Time Series 1"
] | Time Series 1 | multiple_choice | [
4.511494448663059,
4.478604483719042,
-9.258937340488592,
1.1901642460519128,
-0.7702152375501082,
-3.9903638813922013,
9.643968848141164,
6.236903235754465,
-0.13262479009395955,
2.6753424297469643,
3.3237757816974707,
-2.608546088238429,
-1.1436042348206175,
4.845517416168751,
1.092435... | [
0.10313221908701799,
-0.48361743967292165,
-0.3093581833991981,
0.020579871936442486,
0.4061521941070723,
-0.1941742729763535,
0.01479268797693993,
0.030513410904937924,
0.2042996080297333,
-0.13932504282124902,
-0.06507229419277079,
-0.23789568962585678,
-0.054449076852392864,
-0.01057681... | 44 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Variance"
] | Check the degree of variation of the time series over time. | Pattern Recognition | First Two Moment Recognition | 182 | null |
Does the given time series exhibit regime switching? | [
"No",
"Yes"
] | No | binary | null | null | 39 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Regime Switching"
] | Identify whether the time series exhibit different patterns over time. | Pattern Recognition | Regime Switching Detection | 183 | [
-0.21844695540046372,
-0.3445819012533138,
-0.24354062000119267,
-0.3784798801199538,
-0.04992505035712637,
-0.11987720855688164,
-0.057549349808768295,
0.1943567943993681,
-0.03341638235873746,
0.20747598988335317,
-0.20916382592958013,
-0.0012198348861846182,
0.15496772177266116,
-0.1098... |
How does the noise in the given time series influence the detection of periodic pattern in the time series? | [
"No influence, Sinewave",
"Distort the pattern"
] | No influence, Sinewave | binary | null | null | 58 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise",
"Sine Wave",
"Additive Composition"
] | When the noise level is high, it can distort the pattern in the time series. Can you check if you can still detect the cyclic pattern in the time series? | Noise Understanding | Signal to Noise Ratio Understanding | 184 | [
0.030357097086124638,
0.3326742575267282,
0.7086904739613284,
1.5677984229927984,
1.979979586360629,
2.0353873705552603,
2.459247721649921,
2.6991050092229734,
2.392601098632964,
2.902979491252979,
3.00445054039922,
2.362063886039345,
2.6365118304985287,
2.294703741456546,
2.250984041529... |
One type of noise in time series is white noise. Is the given time series noisy (noise dominates other patterns) based on your understanding of white noise? | [
"No",
"Yes"
] | No | binary | null | null | 55 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Gaussian White Noise"
] | When we say a time series is noisy, it typically refers to there are random fluctuations that disrupt the overal pattern of the time series. Can you check if it is the case for the given time series? | Noise Understanding | Signal to Noise Ratio Understanding | 185 | [
0,
0.009224784688090558,
0.018449569376181117,
0.027674354064271676,
0.03689913875236223,
0.04612392344045279,
0.05534870812854335,
0.06457349281663391,
0.07379827750472447,
0.08302306219281502,
0.09224784688090558,
0.10147263156899614,
0.1106974162570867,
0.11992220094517726,
0.12914698... |
Is the noise in the time series more likely to be additive or multiplicative to the signal? | [
"Additive",
"Multiplicative"
] | Additive | binary | null | null | 59 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Additive Composition",
"Multiplicative Composition",
"Gaussian White Noise"
] | Additive noise is added to the signal, while multiplicative noise is multiplied to the signal. When a cyclic component is added with a white noise, the cyclic pattern still remains. When a cyclic component is multiplied with a white noise, the noise is amplified. Can you check if it is the case for the given time series? | Noise Understanding | Signal to Noise Ratio Understanding | 186 | [
-0.039715547577440564,
0.26177229009545394,
0.5317849347548196,
0.5927978581278629,
0.6716147893390557,
0.7435074558995742,
1.051751252581548,
1.2059357036253184,
1.0853232936539363,
1.1814729490666522,
0.9910556742906612,
0.8949847820569745,
0.9019131699569946,
0.7658725237859015,
0.624... |
You are given two time series following similar pattern. Both of them have an anomaly. Do they have the same type of anomaly? | [
"Yes, Time series 1 and time series 2 both have cutoff anomaly",
"No. They have different types of anomalies: cutoff and spikes"
] | Yes, Time series 1 and time series 2 both have cutoff anomaly | binary | [
0,
0.9763654093878286,
1.8363232778110294,
2.4773819705691427,
2.82321809244702,
2.832800546214609,
2.505295583435838,
1.8801664746874784,
1.0324558841400835,
0.06381491568544825,
-0.9096487392688921,
-1.7712508626340946,
-2.417679691192038,
-2.771346291846051,
-2.789659908485595,
-2.4... | [
0,
1.7536157986294543,
1.7581513595641836,
1.762686920498913,
1.7672224814336424,
1.7717580423683716,
1.776293603303101,
1.7808291642378302,
1.7853647251725595,
1.789900286107289,
-1.7037246283474317,
-1.6991890674127024,
-1.694653506477973,
-1.6901179455432438,
-1.6855823846085145,
-1... | 75 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Spike Anomaly"
] | For each time series, identify the type of anomaly based on the given definitions. Then, check if they have the same type of anomaly. | Anolmaly Detection | General Anomaly Detection | 187 | null |
The following time series has an anomaly. What is the most likely type of anomaly? | [
"Cutoff: the pattern of time series disappeared for certain point in time and became flat",
"Scale: the pattern is at obviously different scale at certain point in time"
] | Cutoff: the pattern of time series disappeared for certain point in time and became flat | multiple_choice | null | null | 65 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Cutoff Anomaly",
"Scale Anomaly",
"Wander Anomaly"
] | Anomaly is an observation that deviates from the general pattern in the time series. You should check if the time series has any sudden changes or unexpected patterns. If so, check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 188 | [
-2.818640804157564,
-2.3626781556223033,
-1.9067155070870425,
-1.4507528585517817,
-0.994790210016521,
-0.5388275614812601,
-0.08286491294599949,
0.3730977355892612,
0.8290603841245219,
1.285023032659782,
1.7409856811950437,
2.1969483297303043,
2.652910978265565,
-2.528407981514303,
-2.0... |
Is time series 2 a lagged version of time series 1? | [
"No, time series 1 is a lagged version of time series 2",
"Yes",
"No, they do not share similar pattern"
] | Yes | multiple_choice | [
0.11065408488996566,
0.11749321133036415,
0.15762832536279678,
0.1043870307406568,
0.14594154642218116,
0.12579604650202908,
0.13170666066496498,
0.10999007585957356,
-0.002782573618754988,
-0.09363595718536609,
-0.05342723258136307,
-0.07858312219406625,
-0.08110352433206078,
-0.045750057... | [
0.3046085669762548,
0.2841379793109436,
0.33963881489898773,
0.39128472666450864,
0.4876490280366886,
0.46178636869186673,
0.4399321388841078,
0.3997383144018938,
0.4086971901053059,
0.40080653825823515,
0.38177617263582175,
0.3870675084719735,
0.3662554935985934,
0.39055057638702073,
0.... | 96 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair"
] | Focus on the time delay between the two time series. If time series 2 is a lagged version, then it should look the same to time series 1 after being shifted by a certain number of steps. Can you check this? | Causality Analysis | Granger Causality | 189 | null |
What is the most likely autocorrelation at lag 1 for the given time series? | [
"No autocorrelation",
"Negative autocorrelation around -0.8",
"High positive autocorrelation around 0.8"
] | Negative autocorrelation around -0.8 | multiple_choice | null | null | 45 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Autocorrelation"
] | While it is hard to directly measure the autocorrelation for higher order lags, the autocorrelation at lag 1 can be approximated by observing the time series pattern. You can tell this by checking the sign and magnitude changes at each step compared to the previous step. | Pattern Recognition | AR/MA recognition | 190 | [
1.5726886248968448,
10.23258004991358,
-10.161690506224259,
-9.42647001556443,
2.857538200432046,
-9.888851689640799,
0.06404480997311346,
9.368616501828297,
-5.72820247327947,
9.466242431085675,
-14.395433568112065,
7.5468219489631565,
-10.563203128020115,
9.995294423330392,
-10.0855100... |
The following time series has an anomaly with short term disruption on its pattern. What is the likely pattern of the time series without the anomaly? | [
"Sine wave times linear trend",
"Square wave times log trend",
"Sawtooth wave times linear trend"
] | Sine wave times linear trend | multiple_choice | null | null | 72 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Sawtooth Wave",
"Square Wave",
"Linear Trend",
"Log Trend",
"Wander Anomaly"
] | Wander anomaly brings short term disruption on the pattern. You should focus on the overall pattern of the time series without the anomaly. | Anolmaly Detection | General Anomaly Detection | 191 | [
0.04967141530112327,
-0.008310231491890028,
0.0862324178193733,
0.1983905380368468,
0.05320884125624599,
0.0861144468606337,
0.29868983392711923,
0.2429140184692934,
0.13483010216381164,
0.23846304302009314,
0.12463117227792575,
0.09417633143554464,
0.11775039718869412,
-0.1604906837097988... |
The time series has three cyclic pattern composed additively. Which cycle pattern is most dominant in the given time series in terms of amplitude? | [
"SquareWave",
"SawtoothWave",
"SineWave"
] | SineWave | multiple-choice | null | null | 20 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Square Wave",
"Sawtooth Wave",
"Additive Composition",
"Amplitude"
] | The cyclic patterns have different period and amplitude. The dominant pattern is the one that has the highest amplitude. Identify the pattern with the highest peak. | Pattern Recognition | Cycle Recognition | 192 | [
-0.3173083182951268,
0.27444126082540166,
0.6920744093890375,
0.8388975200500141,
1.4799419744219167,
1.8956430598803633,
2.018696583857182,
2.020174193323362,
2.5406961034042075,
2.801347114287892,
3.221651099218829,
3.3969414323289957,
3.7318098772834527,
3.5813646533645747,
3.81720771... |
You are given two time series which both have trend components. Do they have the same type of trend? | [
"Yes, they both have exponential trend",
"No, time series 1 has exponential trend and time series 2 has log trend",
"No, time series 1 has linear trend and time series 2 has exponential trend"
] | Yes, they both have exponential trend | multiple_choice | [
1.0656787283909632,
1.167294977228438,
1.7232385055020234,
1.7100785973745904,
1.9033046921043755,
2.1114929617440272,
2.1772099626252266,
2.276517803923448,
2.407098813802567,
2.506594488770561,
2.6623421643446936,
2.580057376936378,
2.6574462207562,
2.413835256736917,
2.387883033619570... | [
-0.9509640690245887,
-0.8473840724739371,
-0.8488119888460538,
-0.6419497971340211,
-0.37067916398224476,
-0.42430125240645516,
-0.2164011769764295,
-0.24820539289354118,
0.07481449536349882,
0.1349032139712094,
0.36424720616534445,
0.3639338153322694,
0.6168589738490137,
0.686382807462526... | 85 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Linear Trend",
"Exponential Trend",
"Log Trend"
] | First identify the trend component for each time series. Then, check if they are equal. | Similarity Analysis | Shape | 193 | null |
What is the most likely mean of the given time series? | [
"-11.95",
"1.59",
"23.83"
] | -11.95 | multiple_choice | null | null | 41 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Mean"
] | The given time series is stationary. Check the average value of the time series over time. | Pattern Recognition | First Two Moment Recognition | 194 | [
-11.92457325294198,
-11.929939162076199,
-12.064168379438577,
-11.740566894647994,
-12.079851203979494,
-11.970977816690631,
-12.013409583786567,
-11.830037167139205,
-11.996417332610926,
-11.867328625244545,
-11.894783012892928,
-11.9636095620782,
-11.991187244199518,
-11.923915183000231,... |
You are given two time series following similar pattern. One has an anomaly and the other does not. Which time series has the anomaly, and what is the likely type of anomaly? | [
"Time series 1 with flip anomaly: the pattern is flipped at certain point in time",
"Time series 2 with cutoff anomaly: the pattern of time series disappeared for certain point in time and became flat",
"Time series 1 with speed up/down anomaly: the period of cyclic components is different from other parts of t... | Time series 1 with speed up/down anomaly: the period of cyclic components is different from other parts of the time series | multiple_choice | [
0,
0.3217924151215423,
0.6222833220960388,
0.881544427857949,
1.0823053443333297,
1.2110669348377934,
1.2589715443885745,
1.222374013987892,
1.1030766680837276,
0.9082131265939954,
0.6497884316248299,
0.3439051349024977,
0.009725236677975022,
-0.33176510463628595,
-0.6591084583294577,
... | [
0,
0.23039674350718967,
0.4570114374964873,
0.676125362936421,
0.8841454012982388,
1.077664201389556,
1.2535172355106539,
1.4088357895270742,
1.5410949995388061,
1.6481561307711834,
1.72830239072671,
1.780267676905957,
1.803257777716424,
1.7969636715597783,
1.7615667014040115,
1.697735... | 73 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Linear Trend",
"Speed Up/Down Anomaly",
"Cutoff Anomaly",
"Flip Anomaly"
] | You should first identify the time series with the anomaly. Remember, both time series share similar pattern. Then, you should check the type of anomaly based on the given definitions. | Anolmaly Detection | General Anomaly Detection | 195 | null |
Weak stationarity requires the mean, variance to be constant over time. Does the following time-series exhibit weak stationarity? | [
"Yes",
"No, the variance is different overtime",
"No, the mean is different overtime"
] | Yes | multiple_choice | null | null | 33 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity"
] | For mean, check if the average value changes over time. For variance, check if the degree of variation changes over time. | Pattern Recognition | Stationarity Detection | 196 | [
1.0154204956137347,
-0.7564114373996824,
2.909552454950004,
0.05791393967761438,
0.21401738279592264,
2.7146518241945374,
2.7932817419834146,
-1.315758965839598,
1.1084452817804564,
2.0108387505690133,
-0.5010091816480334,
2.9638916009865577,
-0.040714446081045796,
-0.014567057093659797,
... |
Is the given time series likely to be stationary after removing the cycle component? | [
"Yes",
"No"
] | Yes | binary | null | null | 35 | easy | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Stationarity",
"Sine Wave",
"Square Wave"
] | Cycle component brings the cyclic pattern to the time series. Assume this effect is removed, does the time series satisfy the stationarity condition? | Pattern Recognition | Stationarity Detection | 197 | [
-0.31500937610783597,
0.2586633440195746,
0.5017087168777986,
0.9836945187531634,
0.9567852146184554,
1.2163224614998813,
2.002301734467308,
2.463976279242436,
2.3468517704603618,
2.59182547889669,
2.1134537997758343,
2.295784386933399,
1.8204643416225685,
2.2454308178781504,
1.351949387... |
Is the two time series lagged version of each other despite minor noise? | [
"No, they are not lagged versions at all",
"Yes, they are lagged versions"
] | Yes, they are lagged versions | binary | [
0.1689670564255056,
-0.041453489372361464,
-0.07133931836216491,
0.02952284060994093,
-0.03184869091891446,
0.21909859726239872,
-0.09523868645248705,
0.05711626954488422,
-0.032971358173978525,
-0.11465511288215449,
0.032442606318285584,
0.016177796424410897,
0.00254768648046913,
0.025899... | [
0.0717191163380593,
0.06978046161959547,
0.05688051697828753,
-0.2504644270582351,
-0.04343824387997097,
0.06344386103557362,
-0.10144503883193709,
-0.18333890044454249,
0.1682933425001808,
-0.015840028949487675,
-0.08622932055894703,
-0.17025507427463654,
-0.33313615675909514,
0.049208847... | 100 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Lagged Pair",
"Red Noise"
] | Try to shift one time series by a certain number of steps and check if it looks the same as the other time series despite the noise. If they are lagged versions, they should look very similar in general after the shift. | Causality Analysis | Granger Causality | 198 | null |
You are seeing two instances of random walk. Are they likely to have the same variance? | [
"No, time series 2 has higher variance",
"No, time series 1 has higher variance",
"Yes, they have the same variance"
] | Yes, they have the same variance | multiple_choice | [
-0.02356391732156933,
-0.022643801307774086,
-0.010433270530598988,
-0.0420889420540012,
-0.02176398118568246,
-0.02705668867229917,
-0.05521570028488114,
-0.09671616123527803,
-0.09669561663703652,
-0.09304012983689948,
-0.06860439585659389,
-0.03896965537358665,
-0.0022427478091855066,
-... | [
-0.004728742230527491,
0.003551642700620983,
-0.029348418497932138,
0.009730235946578281,
0.007842732126160386,
-0.008549484530440389,
-0.023113239492223225,
-0.014972908769953408,
-0.019135129513584162,
-0.012949181882572231,
0.0381044740262997,
0.06010787620712343,
0.02004650745822467,
0... | 93 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Red Noise",
"Variance"
] | Random walk is a time series model where the next value is a random walk from the previous value. Variance refers to the distance of the values from the previous steps. At a high level, you should check the distance of the values from the previous steps for both time series. | Similarity Analysis | Distributional | 199 | null |
The following time series has an anomaly with short term disruption on its pattern. What is the likely pattern of the time series without the anomaly? | [
"Square wave times log trend",
"Sine wave times linear trend",
"Sawtooth wave times linear trend"
] | Sawtooth wave times linear trend | multiple_choice | null | null | 72 | hard | Please answer the question and provide the correct option letter, e.g., A), B), C), D), and option content at the end of your answer. All information need to answer the question is given. If you are unsure, please provide your best guess. | [
"Sine Wave",
"Sawtooth Wave",
"Square Wave",
"Linear Trend",
"Log Trend",
"Wander Anomaly"
] | Wander anomaly brings short term disruption on the pattern. You should focus on the overall pattern of the time series without the anomaly. | Anolmaly Detection | General Anomaly Detection | 200 | [
0.04967141530112327,
-0.03572525152548184,
0.02449565561147138,
0.09717985527009906,
-0.0898639553970138,
-0.09766335655544611,
0.07939502237249212,
-0.002534939962546251,
-0.12345356055279355,
-0.015953382064034197,
-0.10672997554908033,
-0.09361555685193437,
-0.005976284947250939,
-0.201... |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.