text stringlengths 1 1.11k | source dict |
|---|---|
ros, ros2, rosservices
Then you can call it like this
using ServiceT1 = ....
using ServiceT2 = ....
auto node = rclcpp::Node::make_shared("client_node");
auto client_1 = node->create_client<ServiceT1>("my_service_1_name");
auto client_2 = node->create_client<ServiceT2>("my_service_2_name");
auto request_... | {
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"tags": "ros, ros2, rosservices",
"url": null
} |
python, validation
squishtest.clickButton(squishtest.waitForObject("{name='CloseButton' text='Close' type='QPushButton' visible='1'}"))
return
else:
errorhandling.stca_list_exception('Error Warning: expected[warning... | {
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"url": null
} |
python, python-3.x, file-system, serialization
def _acquire_dir(self, source, parent, keep_zombies, zombies):
"""Serialize a directory."""
try:
paths = tuple(source.iterdir())
except OSError:
zombies.append(source)
if not keep_zombies:
return
... | {
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"tags": "python, python-3.x, file-system, serialization",
"url": null
} |
ros, actionlib-tutorials
###########
## Build ##
###########
## Specify additional locations of header files
## Your package locations should be listed before other locations
# include_directories(include)
include_directories(
${catkin_INCLUDE_DIRS}
${Boost_INCLUDE_DIRS}
)
## Declare a cpp library
#add_library(l... | {
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"tags": "ros, actionlib-tutorials",
"url": null
} |
python, beginner
class Dice:
"""
One specification for dice rolls in Dungeons & Dragons-like format.
"""
def __init__(self, times: int, sides: int, modifier: int = 0):
if times < 1:
raise ValueError(f'times={times} is not a positive integer')
if sides < 1:
raise... | {
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"tags": "python, beginner",
"url": null
} |
javascript, sorting, mergesort
return list
}
Do you have any idea of how can I improve this? I don't see a way to improve the algorithm, but here are some general coding tips:
A number can either be greater than 1, or less than 2. So you can use 'else' here instead.
if(list.length < 2){
return list
}else if(list... | {
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"tags": "javascript, sorting, mergesort",
"url": null
} |
indices ordinally... Numbers Math 6300 Klaus Kaiser April 9, and c be sets in set... Two, three ( 3 ) is the professional baseball team. associated with a noun that is or... Is zero ( 0 ) is cardinal number example professional baseball team. at this picture: What of. One ), etc black, there are and answers the questio... | {
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9664104933824753,
"lm_q1q2_score": 0.8379124580708391,
"lm_q2_score": 0.8670357615200474,
"openwebmath_perplexity": 1825.8435610759211,
"openwebmath_score": 0.49610114097595215,
"tag... |
python, algorithm, strings
Title: Knuth–Morris–Pratt string match algorithm The Knuth–Morris–Pratt string search algorithm is described in the paper Fast Pattern Matching in Strings (SIAM J. Computing vol. 6 no. 2, June 1977). The initial step of the algorithm is to compute the next table, defined as follows:
The pat... | {
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"tags": "python, algorithm, strings",
"url": null
} |
More specific, the reciprocal of each eigenvalue, let's say $$\sigma_i$$ has to be found. And this might get difficult, if two columns are nearly linear dependent. In this case, $$\sigma_i$$ is very small and the result of the division gets very large and tiny pertubations of $$\sigma_i$$ lead to large fluctuations of ... | {
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"lm_label": "1. Yes\n2. Yes",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.973240718366854,
"lm_q1q2_score": 0.8490039985168744,
"lm_q2_score": 0.8723473879530492,
"openwebmath_perplexity": 222.11189192815877,
"openwebmath_score": 0.9265241622924805,
"tag... |
O(nLogn). So the entire Radix Sort procedure takes O(kn) time. At Cprogramming. Insert sort has the same time complexity but is significantly faster on average because it has no swap operations. The basic idea of Counting sort is to determine, for each input elements x, the number of elements less than x. Because we ar... | {
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9674102524151827,
"lm_q1q2_score": 0.8298136572034452,
"lm_q2_score": 0.8577681031721325,
"openwebmath_perplexity": 925.4757654217474,
"openwebmath_score": 0.3923802375793... |
python, sql, recursion, tree
My goal is to output the table in the following hierarchical format:
Programming
Python
Metaclasses
Java
Reflection
Homebrewing
Yeast
Here is my solution:
class Category(object):
#This is actually a SQLAlchemy table
#I've included this for others to rep... | {
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"tags": "python, sql, recursion, tree",
"url": null
} |
# Dimension of solution space of homogeneous system of linear equations
I have the homogeneous system of linear equations
$$3x_1 + 3x_2 + 15x_3 + 11x_4 = 0,$$ $$x_1 − 3x_2 + x_3 + x_4 = 0,$$ $$2x_1 + 3x_2 + 11x_3 + 8x_4 = 0.$$
I have converted to a augmented matrix and row reduced to $$\begin{bmatrix}1 & 0 & 4 & -3 ... | {
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"lm_q1_score": 0.9848109536438792,
"lm_q1q2_score": 0.8185187775758292,
"lm_q2_score": 0.8311430478583168,
"openwebmath_perplexity": 443.3261831893037,
"openwebmath_score": 0.8975224494934082,
"tag... |
[5 pt]
Consider the function z(n) below.
In [ ]:
def z(n):
a = pow(2.0, n) + 10.0
b = (pow(2.0, n) + 5.0) + 5.0
return a - b
### Part (a)¶
[1 pt]
Using Python, find all positive integers n for which the value of z(n) is nonzero. Save the result in a list called nonzero_zn.
In [ ]:
nonzero_zn = []
### Part (b)¶... | {
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"lm_q1_score": 0.959762052772658,
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"lm_q2_score": 0.8397339616560072,
"openwebmath_perplexity": 2093.745209606644,
"openwebmath_score": 0.44596102833747864,
"tags": nul... |
when there are multiple features which are correlated. Elastic net is the same as lasso when α = 1. For right now I’m going to give a basic comparison of the LASSO and Ridge Regression models. •Lasso very unstable. Only the most significant variables are kept in the final model. Simply put, if you plug in 0 for alpha, ... | {
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9838471647042429,
"lm_q1q2_score": 0.8599584095494789,
"lm_q2_score": 0.8740772351648677,
"openwebmath_perplexity": 1591.3799950309767,
"openwebmath_score": 0.7856265306472778,
"... |
This exercise is recommended for all readers.
Problem 12
Prove that if ${\displaystyle V=W_{1}\oplus \dots \oplus W_{k}}$ then ${\displaystyle W_{i}\cap W_{j}}$ is trivial whenever ${\displaystyle i\neq j}$. This shows that the first half of the proof of Lemma 4.15 extends to the case of more than two subspaces. (Exam... | {
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.990731984977195,
"lm_q1q2_score": 0.8053336535699758,
"lm_q2_score": 0.8128673201042492,
"openwebmath_perplexity": 185.32123109888516,
"openwebmath_score": 0.9378295540809631,
"tags": ... |
python, performance, programming-challenge, comparative-review, collatz-sequence
current = 2
MAIN_SEQ = []
seq = []
MAX_LENGTH = 0
NUM = 0
for num in range(1000001):
seq = [2]
while current >= 1:
for lst in MAIN_SEQ:
if current in lst:
seq.append(item for item in lst[lst.in... | {
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"tags": "python, performance, programming-challenge, comparative-review, collatz-sequence... |
Now, it can be observed that at $${r^2} = \frac{{2{R^2}}}{3}$$, $$\Rightarrow \frac{{{d^2}V}}{{d{r^2}}} < 0$$
Thus, the volume is the maximum when $${r^2} = \frac{{2{R^2}}}{3}$$ .
When, $${r^2} = \frac{{2{R^2}}}{3}$$
Then, the height of the cylinder is
\begin{align}2\sqrt {{R^2} - \frac{{2{R^2}}}{3}} &= 2\sqrt {\fr... | {
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"lm_q1_score": 0.9886682478041812,
"lm_q1q2_score": 0.8128722913443339,
"lm_q2_score": 0.822189134878876,
"openwebmath_perplexity": 2665.892231110638,
"openwebmath_score": 1.0000097751617432,
"tags": nul... |
Chet
1 person
Do you happen to have the final solution?
No, I don't...
If the chain has a hoop force T and the disk is not rotating, what normal force (per unit rim length) does the chain exert on the disk (like a rubber band would exert on the disk)? If the chain is rotating, at what angular velocity is the tension ... | {
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"lm_q1_score": 0.9728307747659751,
"lm_q1q2_score": 0.886423663828439,
"lm_q2_score": 0.9111797106148062,
"openwebmath_perplexity": 599.4055982067038,
"openwebmath_score": 0.8067883253097534,
"... |
complexity-theory, time-complexity, sorting, arrays, lower-bounds
What is it real lower bound? What about my justification ?
Edit: We assume model computation as comparison $\le$. $n-1$ comparisons are necessary and sufficient. To show that $n-1$ comparisons are necessary, we consider an adversary that always answer... | {
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"openwebmath_score": null,
"tags": "complexity-theory, time-complexity, sorting, arrays, lower-bounds",
"url": null
} |
homework-and-exercises, experimental-physics
Title: Reason behind the train remaining intact to the Train track I was wondering why trains moving at such hard speeds remain intact to the railway track even while turning. Is it because of friction ? No. Friction is a force that does not act normal to the surface, but r... | {
"domain": "physics.stackexchange",
"id": 16823,
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"tags": "homework-and-exercises, experimental-physics",
"url": null
} |
the rectangle with the most area that can be inscribed in a semi-circle of radius r. the value of the Lagrange multiplier at the solution of the problem is equal to the rate of change in the maximal value of the objective function as the constraint is relaxed. Remember that the solution using Lagrange multipliers not o... | {
"domain": "alterauto.fr",
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9854964173268185,
"lm_q1q2_score": 0.8190884918285406,
"lm_q2_score": 0.8311430436757313,
"openwebmath_perplexity": 548.9898073193627,
"openwebmath_score": 0.694037914276123,
"tags"... |
java, multithreading, search, url
int numThreads = 16; // can be changed to however many
ArrayList<Object[]> results = Database.query(query, null);
Database.update("update ... set is_live = null where is_live is not null limit " + (results.size() + 1), null); // gets around "safe updates" and allows... | {
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"tags": "java, multithreading, search, url",
"url": null
} |
reinforcement-learning, reward-functions, multi-armed-bandits, reward-design
In terms of implementing a simulation of your environment, you will need to model it as a stateful system, and will have to include a concept of forward step in the sequence which modifies the state variables (regardless of whether these vari... | {
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"tags": "reinforcement-learning, reward-functions, multi-armed-bandits, reward-design",
"url": ... |
catkin, osx
Original comments
Comment by Artem on 2013-11-13:
Are you on OSX 10.8? What package is this?
Comment by Artem on 2013-11-13:
Have you seen this answer? http://answers.ros.org/question/36130/osx-fuerte-rosdep-install-a-fails-on-pcl/
Comment by Bruno Normande on 2013-11-13:
OSX 10.9, and I'm not installing c... | {
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"openwebmath_score": null,
"tags": "catkin, osx",
"url": null
} |
regression, regularization
Title: Which regularizer to use to get a sparse set of regression parameters? I am doing a regression and I want to use the regularizer that will be the most useful to get a sparse set of parameters.
Which regularizer should I use ? Cardinality? maximum value ? Sum of absolute values ? Eucli... | {
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"openwebmath_score": null,
"tags": "regression, regularization",
"url": null
} |
filters, discrete-signals, lowpass-filter, smoothing, real-time
Title: Cascaded one-pole sections and relationship to time constant I have implemented a typical one-pole lowpass filter to smooth out some control signals.
The form of the filter is:
$$
y1 = x0 + b1\centerdot(y1 - x0)
$$
x0 is the current input sample.
y... | {
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"openwebmath_score": null,
"tags": "filters, discrete-signals, lowpass-filter, smoothing, real-time",
"url": null
} |
organic-chemistry, reactivity
I'm doing an organic lab experiment. I'm heating up silicon, carbon, and sulfur individually then placing them in pure $\ce{O2}$. I don't really know about carbon chemistry but I thought the reaction might be related to the electronegativity of silicon being lower than that of sulfur/carb... | {
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"tags": "organic-chemistry, reactivity",
"url": null
} |
# Week 8
## Lecture 21: Preconditioning Techniques. The Conjugate-Gradient Method
### Summary
Continued to discuss preconditioning: finding an M such that MA (left preconditioning) or AM (right preconditioning) has clustered eigenvalues (solving MAx=Mb or AMy=b with x=My, respectively). Essentially, one can think of... | {
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"lm_q1_score": 0.991014572574342,
"lm_q1q2_score": 0.8148014140772574,
"lm_q2_score": 0.822189134878876,
"openwebmath_perplexity": 1345.1013344345292,
"openwebmath_score": 0.7574633359909058,
"tags": null,
... |
graphs, approximation, greedy-algorithms
Title: Can we prove the greedy algorithm archives 1.5-approximation for the Minimal Dominating Set Problem? The following approximation algorithm for the Minimal Dominating Set Problem is said by a fellow student to be a 1.5-approximation:
Start with empty set $S$
As long as n... | {
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"tags": "graphs, approximation, greedy-algorithms",
"url": null
} |
write it as (641/2)3 = 83 = 512 rather than (643)1/2, because then you’d have to find the square root of 262,144. Simplifying logarithmic expressions. How to solve: Explain how can the properties of rational exponents be applied to simplify expressions with radicals or rational exponents. Typically, your final answer s... | {
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"lm_q1_score": 0.9572777975782055,
"lm_q1q2_score": 0.8211223675986677,
"lm_q2_score": 0.8577681104440172,
"openwebmath_perplexity": 800.6446698755076,
"openwebmath_score": 0.7046321034431458,
"tags"... |
Define the piecewise function
$y=\left\{\begin{array}{cc}-2& x<-2\\ 0& -2
syms y(x)
y(x) = piecewise(x < -2,-2,(-2 < x) & (x < 0),0,1)
y(x) =
Evaluate y(x) between -3 and 1 by generating values of x using linspace. At -2 and 0, y(x) evaluates to 1 because the other conditions are not true.
xvalues = linspace(-3,1,5... | {
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"tags": n... |
Study Notes, and Video Lessons, 3,000 FRM Practice Questions – QBank, Mock Exams, and Study Notes. Example 8.3 The range of a set of data is 13.67 and the largest value is 70.08. Find the median. You may notice that all the relative measures of dispersion are called coefficients. Usually we work with samples, not popul... | {
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9802808701643914,
"lm_q1q2_score": 0.8351530266828452,
"lm_q2_score": 0.8519527944504227,
"openwebmath_perplexity": 681.8413820680182,
"openwebmath_score": 0.7993106245994568,
... |
general-relativity, spectroscopy, stars, redshift
$$ \nu_\infty = \nu_r \sqrt{1 - \frac{2GM}{c^2r}} \tag{2} $$
It's all very well to talk about observers at infinity, but of course real observers are never at infinity so we might ask what happens for an observer at a large but finite value of $r$.
Suppose the light is... | {
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"tags": "general-relativity, spectroscopy, stars, redshift",
"url": null
} |
c#, linq, community-challenge, sudoku
// The existing numbers in this rule
IEnumerable<int> existingNumbers = new HashSet<int>(withNumber.Select(tile => tile.Value).Distinct().ToList());
SudokuProgress result = SudokuProgress.NO_PROGRESS;
foreach (SudokuTile tile in withoutNumber)
... | {
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"tags": "c#, linq, community-challenge, sudoku",
"url": null
} |
qiskit, ibm-q-experience, error-correction
So shots number can help to improve the results. Measurement error mitigation will help a little bit to improve this result even farther, but maybe the final result will be still unsatisfactory. Also, I want to mention that CNOT gates are noisier then single-qubit gates and i... | {
"domain": "quantumcomputing.stackexchange",
"id": 1433,
"lm_label": null,
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"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "qiskit, ibm-q-experience, error-correction",
"url": null
} |
cosmology, friction, cosmological-inflation
In cosmology there are other cases of energy being gained or lost. Note that the cosmological spacetime is described, in the big, by the Roberston Walker metric, and it is not time symmetric, nor asymptotically flat, so energy is not (in the purist sense) conserved. Other ca... | {
"domain": "physics.stackexchange",
"id": 30876,
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"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "cosmology, friction, cosmological-inflation",
"url": null
} |
homework-and-exercises, string-theory
Title: Where does $p^i/p^+$ come from in the EOM of an open string? I have a stupid question about Eq. (1.3.22) in Polchinski's string theory volume 1.
In the equation of motion for an open string, Eq. (1.3.22),
$$X^i (\tau, \sigma) = x^i + \frac{ p^i}{p^+} \tau + i \bigl(2 \al... | {
"domain": "physics.stackexchange",
"id": 8618,
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"tags": "homework-and-exercises, string-theory",
"url": null
} |
java, algorithm
private static <T> Set<Set<T>> permute(final Set<T> initial, final List<Set<T>> itemSets) {
if (itemSets.isEmpty()) {
return Collections.singleton(initial);
}
final Set<T> items = itemSets.get(0);
final List<Set<T>> remaining = itemSets.subList(1, itemSets.... | {
"domain": "codereview.stackexchange",
"id": 1199,
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"openwebmath_score": null,
"tags": "java, algorithm",
"url": null
} |
Sorry, what I meant to ask is how do I get from
1 - 1 / sq.rt 2
to
(sq.rt 2 - 1) / sq.rt 2
6. Originally Posted by Soroban
And we must show that the two ratios are equal.
The first ratio is: . $\frac{\sqrt{2}}{1} \;=\;{\color{red}\sqrt{2}}$
The second ratio is: . $\frac{1}{\frac{\sqrt{2}}{2}} \:=\:\frac{2}{\sqrt... | {
"domain": "mathhelpforum.com",
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"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
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"openwebmath_perplexity": 2471.9713979555613,
"openwebmath_score": 0.759093701839447,
"tag... |
quantum-mechanics, momentum, operators
What am I missing here? In this case the index can vary on the number of spatial dimensions (three if you are in 3D). The $i_n$ notation refers to the fact that you are "repeating" the scalar product "$\mathbf{a}\cdot\nabla$" n times:
$$
(\mathbf{a}\cdot\nabla)^n = (a_i\nabla_i)^... | {
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"openwebmath_score": null,
"tags": "quantum-mechanics, momentum, operators",
"url": null
} |
operating-systems, cpu-cache
Title: how os can calculate cpu cache size? There's an interview question.
In my opinion, os can calculate cache hit rate and miss rate(with the total running time of process and the number of transfer of block of memory to cache).
But how can know the size of cache? Is it possible to calc... | {
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "operating-systems, cpu-cache",
"url": null
} |
statistical-mechanics, computational-physics, simulations
Title: How to tell convergence in Metropolis Monte Carlo simulation? I just started learning MC simulation and I wrote my own code for it based on Lennard-Jones potential.
Per cycle:
Move particle $i$
Apply boundary condition
Calculate change in energy, $\Delt... | {
"domain": "physics.stackexchange",
"id": 77137,
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"lm_name": null,
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"openwebmath_score": null,
"tags": "statistical-mechanics, computational-physics, simulations",
"url": null
} |
digital-communications, modulation, cross-correlation, demodulation
On the other hand, I cannot make setup #3 work with codes that resemble normal Walsh matrices
$[1,1;0,1]$ would not correspond to CDMA because whether in $GF(2)$ or $R^2$, they are not orthogonal. $[1,0,0,0;0,1,0,0;0,0,1,0;0,0,0,1]$ is orthogonal in ... | {
"domain": "dsp.stackexchange",
"id": 8659,
"lm_label": null,
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "digital-communications, modulation, cross-correlation, demodulation",
"url": null
} |
java, interview-questions
private void checkForNull(Item item) {
if(item == null)
throw new IllegalArgumentException("Item can't be null");
}
private void checkForNull(Bid bid) {
if(bid == null)
throw new IllegalArgumentException("Bid can't be null");
if(bid.getUser() == null)
throw ... | {
"domain": "codereview.stackexchange",
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, interview-questions",
"url": null
} |
hydrology, rivers, geomorphology
Mountain ranges are often formed from orogeny, where tectonic plates collide. Rivers starts at high altitude, radiating out in all directions from mountains, but as collisions in the present continental settings are often on the rim of large plates (e.g Andes, Alps, Himalaya), and the ... | {
"domain": "earthscience.stackexchange",
"id": 684,
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "hydrology, rivers, geomorphology",
"url": null
} |
# Math Help - Perfect square s, odd number of factors
1. ## Perfect square s, odd number of factors
If a number is a perfect square, it will have an odd number of factors (e.g., 4 has factors 1, 2, 4), whereas all other numbers have an even number of factors.
Is the converse true? Please explain why?
2. ## Re: Perf... | {
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"openwebmath_score": 0.891546368598938,
"tags"... |
c#, numerical-methods
Title: Simpson's method for numerically computing the integration of a function I have implemented the Simpson's rule for numerical integration.
Check this video for the implemented function.
namespace Simpsons_method_of_integration
{
//https://www.youtube.com/watch?v=ns3k-Lz7qWU
using S... | {
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"openwebmath_score": null,
"tags": "c#, numerical-methods",
"url": null
} |
dataset, predictive-modeling, logistic-regression, beginner
Title: Train, test and submission files - what am I supposed to do with all of them? this might be very beginner's question.
I'm working on Kaggle's HomeCredit Default Risk problem which has among others dataset train, test and submission files as can be seen... | {
"domain": "datascience.stackexchange",
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"openwebmath_score": null,
"tags": "dataset, predictive-modeling, logistic-regression, beginner",
"url": null
} |
python, scikit-learn, data-mining, random-forest
Title: How can I fit categorical data types for random forest classification? I need to find the accuracy of a training dataset by applying Random Forest Algorithm. But my the type of my data set are both categorical and numeric. When I tried to fit those data, I get an... | {
"domain": "datascience.stackexchange",
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, scikit-learn, data-mining, random-forest",
"url": null
} |
python, game, console, chess
def is_king(piece: str) -> bool:
return piece.lower() == "k"
def is_queen(piece: str) -> bool:
return piece.lower() == "q"
def is_rook(piece: str) -> bool:
return piece.lower() == "r"
def is_bishop(piece: str) -> bool:
return piece.lower() == "b"
def is_knight(piece: str) -... | {
"domain": "codereview.stackexchange",
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"tags": "python, game, console, chess",
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} |
the signals as functions of τ: x(τ) and h(τ) 2. To understand how convolution works, we represent the continuous function shown above by a discrete function, as shown below, where we take a sample of the input every 0. In each case, the output of the system is the convolution or circular convolution of the input signal... | {
"domain": "paroleoggi.it",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9877587239874877,
"lm_q1q2_score": 0.8231236471102209,
"lm_q2_score": 0.8333246035907932,
"openwebmath_perplexity": 817.352576756788,
"openwebmath_score": 0.8224692344665527,
"tags... |
C whose endvertices are in the vertex set of C. A Hamiltonian cycle is a cycle which passes through every vertex in a graph exactly once. Some definitions…. disjoined Hamiltonian cycle problem is also NP-complete [15]. To complete the proof that G is hamiltonian if 2d is at least |V(G)| we note that for a graph with th... | {
"domain": "giardinilegnone.it",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9888419703960398,
"lm_q1q2_score": 0.8037973224824343,
"lm_q2_score": 0.8128673201042493,
"openwebmath_perplexity": 421.31380160784477,
"openwebmath_score": 0.6590907573699951,
... |
electrochemistry, electrolysis
Title: Pourbaix Diagram and Galvanic Cell I am trying to understand how a galvanic cell where copper and mild steel are linked occurs. It seems that on most galvanic series, Fe and Cu are far enough apart (>.2V difference) that Fe would preferentially ionize to Fe+2, while copper is "pla... | {
"domain": "chemistry.stackexchange",
"id": 16984,
"lm_label": null,
"lm_name": null,
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"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electrochemistry, electrolysis",
"url": null
} |
scala, simulation, physics
def addConnection(atomConnection: AtomConnection): Unit ={
connections += atomConnection
}
def removeConnection(atomConnection: AtomConnection): Unit ={
connections -= atomConnection
}
def removeConnection(atom:Atom): Unit ={
connections = connections.filter(connection ... | {
"domain": "codereview.stackexchange",
"id": 17200,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
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"openwebmath_score": null,
"tags": "scala, simulation, physics",
"url": null
} |
to calculate marginal cost and. We place emphasis on finding an equation of a tangent line especially horizontal line tangent lines. Sample Exercise 14. CAGR = (FV / PV) 1 / n - 1. t 1/2 is > 6 hours, and τ is 24 hrs), one could calculate the accumulation ratio using method 2 (e. B This behavior is characteristic of a ... | {
"domain": "kangalmalakli.it",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9863631635159684,
"lm_q1q2_score": 0.8087125867277576,
"lm_q2_score": 0.8198933381139646,
"openwebmath_perplexity": 355.8038280172568,
"openwebmath_score": 0.7723156809806824,
"tags... |
c#, performance, file-system
public string[] GetFiles()
{
if (_files.Count != 0)
return _files.ToArray();
return new string[0];
}
public void Find()
{
try
{
foreach (var directory in TargetDirectories)
{
Search(directo... | {
"domain": "codereview.stackexchange",
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, performance, file-system",
"url": null
} |
haskell, monads, optional
Title: Haskell/Yesod - Butchering use of MaybeT The following is some code that is used to provide the frontend with certain parameters when rendering a form. The parameters are conditional based around what data is being changed, getNewSaleFormOptions provides a way of quering these options ... | {
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "haskell, monads, optional",
"url": null
} |
java, game, tic-tac-toe
// Player 2(CPU) sequence
public static void player2(char p1, char p2, char[][] board) {
int pos1 = (int) (Math.random() * 3);
int pos2 = (int) (Math.random() * 3);
while ((board[pos1][pos2] == p1) || (board[pos1][pos2] == p2)) {
pos1 = (int) (Math.ra... | {
"domain": "codereview.stackexchange",
"id": 17728,
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"openwebmath_score": null,
"tags": "java, game, tic-tac-toe",
"url": null
} |
navigation, ekf, ros-kinetic, robot-localization, ekf-localization-node
Overall, my general advice with these applications is to start small. Start with a single EKF instance, and just the odom data. Convince yourself that the data is being fused properly, then add in the IMU. Check if the output changes as you'd expe... | {
"domain": "robotics.stackexchange",
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"openwebmath_score": null,
"tags": "navigation, ekf, ros-kinetic, robot-localization, ekf-localization-node",
"url"... |
electromagnetic-radiation, visible-light, polarization
Title: How is the orientation of an electromagnetic wave determined? I was looking up for how polarisers work, I understood mostly everything except the part that explains that the polariser filters everything except light that is in a certain orientation. | {
"domain": "physics.stackexchange",
"id": 10954,
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electromagnetic-radiation, visible-light, polarization",
"url": null
} |
java, enum
private static final String keyDatacenters = "datacenter_names";
private static final String keyDefaultDatacenter = "datacenter_default";
private static final String keyRecoPrefix = "reco_prefix";
private static final String keyRecoSuffix = "reco_suffix";
private static final String keyUnRec... | {
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"tags": "java, enum",
"url": null
} |
• Show that $$F(\alpha) = F(\alpha^2)$$.
• Prove that $$\alpha^{2020}$$ is algebraic of odd degree over $$F$$.
### Spring 2012 #1
Suppose that $$F\subset E$$ are fields such that $$E/F$$ is Galois and $${\left\lvert {{ \operatorname{Gal}} (E/F)} \right\rvert} = 14$$.
• Show that there exists a unique intermediate f... | {
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"id": null,
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"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9908743636887527,
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"lm_q2_score": 0.8104789132480439,
"openwebmath_perplexity": 362.4303021135475,
"openwebmath_score": 0.9997151494026184,
"tags":... |
audio, noise
Title: Halving a floating point time series and it's effect on noise levels Why does halving a floating point time series (audio) cause the noise shown in the spectogram to change?
From having a look, all the steps from getting the first half of X, stft() and amplitude_to_db() output the same values exce... | {
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"openwebmath_score": null,
"tags": "audio, noise",
"url": null
} |
python, performance, python-2.x, pandas, machine-learning
trainRes = train['response'] #Response column
Actuals=test['response'] #Actuals
new_train=train.drop(train.columns[[1,2]],axis=1)
colnames=list(new_train)
trainArr = train.as_matrix(colnames) #Convert dataframe into array matrix representation
#For ... | {
"domain": "codereview.stackexchange",
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, performance, python-2.x, pandas, machine-learning",
"url": null
} |
r, simulation, matlab, julia, wolfram-mathematica
Julia implementation:
## Pkg.add("Distribution")
using Distributions
# Pkg.clone("https://github.com/ChrisRackauckas/VectorizedRoutines.jl") # for R.rep function
# Will be Pkg.add("VectorizedRoutines") after being added to package system
using VectorizedRoutines
funct... | {
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "r, simulation, matlab, julia, wolfram-mathematica",
"url": null
} |
ornithology, taxonomy, species-identification
I don't know which one of them it could be, nor how it could be in English (the first article doesn't have an English version) when spoken (my indigenous people can't use Latin names, for sure...)
Thank you in advance for your quick response! I have done some reading base... | {
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ornithology, taxonomy, species-identification",
"url": null
} |
c#, performance, json.net
private IEnumerable<RecordHolder> GetConfigFromLocalFiles()
{
// read config files already present in default "Records" folder
// and return RecordHolder list back.
}
// this can be improved a lot to achieve below cases in proper way
private void ConfigChanged... | {
"domain": "codereview.stackexchange",
"id": 38901,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, performance, json.net",
"url": null
} |
As I mentioned before, the default kernel for this package is the Normal (or Gaussian) probability density function (pdf): $$K(x) = \frac{1}{\sqrt{2\pi}}\text{exp}\left(-\frac{1}{2}x^2\right)$$ … So in summary it is just like a histogram but having a smooth curve drawn through the top of each bin. Kernel density estima... | {
"domain": "almodarresi.com",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9835969641180276,
"lm_q1q2_score": 0.8379781858905916,
"lm_q2_score": 0.8519527982093666,
"openwebmath_perplexity": 834.4257758144151,
"openwebmath_score": 0.4124547243118286,
"t... |
quantum-field-theory, klein-gordon-equation
Then we conclude that $$\Phi(\vec{x},t) = \int \frac{d^3 p}{(2\pi)^3}\frac{1}{\sqrt{2\omega_p}}\left( \mathbb{a}(t)_p e^{ipx} + \mathbb{a}(t)^\dagger_p e^{-ipx}\right)$$
Where $$\mathbb{a}(t)_p\equiv e^{iHt}e^{-iH_0 t} a_p e^{iH_0 t}e^{-iHt}$$
and $\mathbb{a}_p(t)$ satisfie... | {
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"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-field-theory, klein-gordon-equation",
"url": null
} |
c, bitwise
while (sequence){
sequence>>= 1;
nextBit = sequence & 1;
if(bit ^ nextBit){
if(insideSequence){
sequenceSize++;
}
else{
sequenceSize = 2;
sequenceIdx = currentIdx;
insideSequence ... | {
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"id": 24807,
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"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c, bitwise",
"url": null
} |
matlab, discrete-signals, noise, least-squares, parameter-estimation
vParamAlpha = [1, 2, 3];
vParamBeta = [1, 2, 3];
bestMse = 1e50;
vX = zeros(size(vY, 1), 1, class(vY));
for ii = 1:length(vParamAlpha)
currParamAlpha = vParamAlpha(ii);
for jj = 1:length(vParamBeta)
currParamBeta = vParamBeta(jj);... | {
"domain": "dsp.stackexchange",
"id": 9414,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "matlab, discrete-signals, noise, least-squares, parameter-estimation",
"url": null
} |
opencv, ros-kinetic
[caltab_detector_node-2] process has died [pid 30212, exit code -6, cmd /home/benny/xenial_ws/devel/lib/caltab_detector/caltab_detector_node caltab_detector_node/image_in:=/webcam/image_raw __name:=caltab_detector_node __log:=/home/benny/.ros/log/2ef1c64e-07d0-11e7-8d74-5c514fc42bc4/caltab_detector... | {
"domain": "robotics.stackexchange",
"id": 27294,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "opencv, ros-kinetic",
"url": null
} |
between. Find an expression for $\theta$ given an elliptical angle the way. Or smallest radius is at the north end of the ellipse is basically the oval-shaped field between Mall. And the White House is at the north end of the ellipse of the White House you need! Ellipse the same way a square can be thought of as an can... | {
"domain": "patriciabarber.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9697854103128329,
"lm_q1q2_score": 0.8242896490247322,
"lm_q2_score": 0.8499711794579723,
"openwebmath_perplexity": 551.2774244822326,
"openwebmath_score": 0.8200658559799194,
"ta... |
java, regex
/**
* Checks if in returned by analyzing methods TreeMaps are results which will cause BadLocationException. If
* some part of regular expression is able to match whole example(for example by use of greedy
* *+ or ?), results of match will distort the match values given by next checked regul... | {
"domain": "codereview.stackexchange",
"id": 14559,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "java, regex",
"url": null
} |
algorithm, objective-c, ios
for (int i = 0; i < self.tapArray.count; i++) {
if (editing1) {
editing2 = FALSE;
editing3 = FALSE;
first = point;
second = self.segmentBeingEdited.secondPoint;
third = self.segmentBeingEdited.thirdPoint;
//self... | {
"domain": "codereview.stackexchange",
"id": 14621,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "algorithm, objective-c, ios",
"url": null
} |
c#, async-await, azure
We have understood that the best way to read from blobs is to follow the async/await pattern and not using the AsParallel method (other suggestions are most welcomed). I have the following questions:
By creating tasks in parallel and then waiting for all of them to complete, do we lose any perf... | {
"domain": "codereview.stackexchange",
"id": 22719,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, async-await, azure",
"url": null
} |
c++, object-oriented, c++11, statistics
I find that my Statistic::Value method needs references to private members of the Stage class. Is there a way to avoid the signature Statistic::Value(std::vector<double> const &, std::vector<double> const &)? If I changed the representation of data in stage to std::vector<std::p... | {
"domain": "codereview.stackexchange",
"id": 21215,
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"lm_name": null,
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"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, object-oriented, c++11, statistics",
"url": null
} |
evolution, terminology, natural-selection, computational-model, definitions
No general conclusion about total evolutionary change is possible, because the complete range of forces that can perturb populations remains unpredictable. However, we can express an elegant equilibrium condition. At equilibrium, the gain in i... | {
"domain": "biology.stackexchange",
"id": 9623,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "evolution, terminology, natural-selection, computational-model, definitions",
"ur... |
bioinformatics, ecology, theoretical-biology
The field is broad and includes foundations in applied mathematics, computer science, biology, statistical physics, genetics, chemistry, evolution, and conservation biology. Theoretical ecology aims to explain a diverse range of phenomena in the life sciences, such as popul... | {
"domain": "biology.stackexchange",
"id": 5030,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "bioinformatics, ecology, theoretical-biology",
"url": null
} |
long history of evolving numbers, one must say these two play a huge role. A complex number is created from real numbers. This leads to the following: Formulas for converting to polar form (finding the modulus and argument ): . is called the real part of , and is called the imaginary part of . But either part can be 0,... | {
"domain": "fernandmandl.com",
"id": null,
"lm_label": "1. Yes\n2. Yes",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9871787879966232,
"lm_q1q2_score": 0.8645583377577755,
"lm_q2_score": 0.8757869884059267,
"openwebmath_perplexity": 362.283635598996,
"openwebmath_score": 0.7015787363052368,
"tags"... |
quantum-mechanics, schroedinger-equation, mathematical-physics, perturbation-theory
$$
\begin{pmatrix}c_+^R(t)\\c_-^R(t)\end{pmatrix}=\exp\left(i \begin{pmatrix}1&0\\0&-1\end{pmatrix}\omega t\right)
\begin{pmatrix}c_+^S(t)\\c_-^S(t)\end{pmatrix}.
$$ Note that we have not said anything about what functional form the co... | {
"domain": "physics.stackexchange",
"id": 80319,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "quantum-mechanics, schroedinger-equation, mathematical-physics, perturbation-theor... |
boost, macos-snowleopard, osx
ld: symbol(s) not found
collect2: ld returned 1 exit status
make[2]: *** [lib/librostime.dylib] Error 1
Built target topic_tools_genpy
[ 11%] [ 11%] Built target topic_tools_genlisp
[ 11%] Built target topic_tools_gencpp
[ 11%] make[1]: *** [roscpp_core/rostime/CMakeFiles/rostime.dir/all]... | {
"domain": "robotics.stackexchange",
"id": 10927,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "boost, macos-snowleopard, osx",
"url": null
} |
python, covid-19, virus
Title: How to sort multiple FASTA files based on their content? I have around 10,000 FASTA files of Influenza A virus.
These files contains sequences of each of the 8 segments of the viral genome and I want to separate each genome segment into a different folder and subdivide each directory int... | {
"domain": "bioinformatics.stackexchange",
"id": 1612,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, covid-19, virus",
"url": null
} |
python, python-3.x, pygame, snake-game
self.head = next_head_coord
self.tail = next_tail_coord
return self.head, old_tail_coord
def move_forward_eat_bug(self, next_head_coord, head_direction):
self.grid[self.head[0]][self.head[1]] = head_direction
self.grid[next_h... | {
"domain": "codereview.stackexchange",
"id": 43855,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, python-3.x, pygame, snake-game",
"url": null
} |
c#, bitwise
// use "for" in order to complete the formula {p, p+1, …, p+k-1}
for (num1 = loop; num1 < (loop + k); num1++)
{
bit = (n >> num1) & 1; // check the first value
if (bit == 1)
{
n1 = (bit << num1 + (num2 - num1)) | n; // inpu... | {
"domain": "codereview.stackexchange",
"id": 6934,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c#, bitwise",
"url": null
} |
ros2
Originally posted by Bernat Gaston on ROS Answers with karma: 119 on 2023-05-02
Post score: 4
Hi!
I completely agree with you that testing software in ROS2 is not so straightforward as we wish.
There's just a little point that is not clear from your question. Are you referring to testing some library (ROS2 indip... | {
"domain": "robotics.stackexchange",
"id": 38361,
"lm_label": null,
"lm_name": null,
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"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros2",
"url": null
} |
acid-base, redox
But not always.
Most readers are familiar with the use of phenolphthalein as an indicator for titrating acid solutions with a strong base such as sodium hydroxide. When the acid is neutralized, the next increment of sodium hydroxide deprotonates the phenolphthalein molecules and they rapidly turn pink... | {
"domain": "chemistry.stackexchange",
"id": 17622,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "acid-base, redox",
"url": null
} |
oceanography, sea-level, waves, ocean-currents, ocean-models
Title: Best book/s of oceanic data treatment and analysis? I would like to purchase a/some books which are really good and practical references to get into the oceanic data (wave heights,currents and sea level) treatment and statistical analysis, coming from... | {
"domain": "earthscience.stackexchange",
"id": 610,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "oceanography, sea-level, waves, ocean-currents, ocean-models",
"url": null
} |
electrical-engineering
Title: Scale on inclined plane Suppose a common scale using 4 load cells is placed on an inclined surface and gives a 1kg reading for a given load. Will the 'true' weight of the load be (precisely) 1kg / cos(theta) where theta is the angle of the plane? This should be true in physics, but is it ... | {
"domain": "engineering.stackexchange",
"id": 3416,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electrical-engineering",
"url": null
} |
statistical-mechanics, partition-function
Title: Partion function for ideal gas - why use only one octant? In these lecture notes (page 2) and in other sources I have checked, it says that the number of states with $k\in[k,k+dk]$ is:
$$dN=\frac{4\pi k^2V}{8\pi^3}$$
Saying the factor of $8$ comes from the fact we only ... | {
"domain": "physics.stackexchange",
"id": 28102,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "statistical-mechanics, partition-function",
"url": null
} |
ros, message
Originally posted by ahendrix with karma: 47576 on 2015-06-15
This answer was ACCEPTED on the original site
Post score: 2
Original comments
Comment by HououinKyouma on 2015-06-15:
I see. I didn't know it was not possible to overload an operator again. The -p option seems useful, but I'm writing my result... | {
"domain": "robotics.stackexchange",
"id": 21922,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros, message",
"url": null
} |
openni-kinect, pointcloud
Title: About "openni_kinect" stack
Hi,
Can someone point me to a specific "openni_kinect" or similar that has already point cloud built. I was looking at "openni_nodelet.cpp" installed from source. Previously, I was looking at "openni_nodelet.cpp" installed from apt-get, it has such a point ... | {
"domain": "robotics.stackexchange",
"id": 6352,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "openni-kinect, pointcloud",
"url": null
} |
kalman, callback, thread, asyncspinner, publisher
Sensor2Callback(&msg)
{
{
boost::mutex::scoped_lock lock(sensor2)
Sensor2msg = *msg;
new_Sensor2 = true;
}
}
main
{
// ...Some INIT stuff... //
ros::Subscriber Sensor1_sub = nh.subscribe("Sensor1", 1, Sensor1Callback);
ros::Subscriber Sensor2_s... | {
"domain": "robotics.stackexchange",
"id": 25296,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "kalman, callback, thread, asyncspinner, publisher",
"url": null
} |
c++, iterator
} // !eval
} // !cpplib
///////////
#endif // !__ENUMERATOR_INL__
main.cpp:
#include <iostream>
#include <string>
#include "common_utils/enumerator.hpp"
int main()
{
cpplib::common::enumerator<double> test;
for (int i = 0; i < 5; i++)
{
test.emplace_back(i);
}
// do-whil... | {
"domain": "codereview.stackexchange",
"id": 26693,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "c++, iterator",
"url": null
} |
python, python-3.x, file, file-system
def _get_number_of_images_in_directory(self, directory: str) -> int:
return len(os.listdir(directory))
def _construct_destination_string(self, current_number, extension):
return "{0}_{1}.{2}".format(self._source.subdirectory.lower().replace(" ","_"), current_n... | {
"domain": "codereview.stackexchange",
"id": 35129,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, python-3.x, file, file-system",
"url": null
} |
electric-circuits, electrical-resistance, electronics
$N_3$ is disconnected from the external circuit, it is not an open point. So, if you connect a source between $N_1$ and $N_2$, the current from the source will flow through the two paths (blue & green) i show below. Make sense?
Now you can see that the equivalen... | {
"domain": "physics.stackexchange",
"id": 73092,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "electric-circuits, electrical-resistance, electronics",
"url": null
} |
python, python-3.x, google-api
def aggregate_ads(ad_data, labels=list(), default_advertiser='internal'):
# Creates dicts to hold data, structured to provide code-readability
ads_data = defaultdict(
lambda: defaultdict(
lambda: defaultdict(int)
))
# Lowercases all labels... | {
"domain": "codereview.stackexchange",
"id": 43922,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "python, python-3.x, google-api",
"url": null
} |
# Set of zero divisors and the set of units of the ring of functions from $X$ to $R$
Hope this isn't a duplicate.
I was trying to answer the following question: Let $X$ be a non-empty set and $R$ be a ring. Then define $F(X,R)$ to be the ring of functions from $X$ to $R$. Then what is the set of zero divisors and the... | {
"domain": "stackexchange.com",
"id": null,
"lm_label": "1. YES\n2. YES",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9615338123908151,
"lm_q1q2_score": 0.813402260542986,
"lm_q2_score": 0.8459424411924673,
"openwebmath_perplexity": 74.0305572977213,
"openwebmath_score": 0.8940383791923523,
"tags"... |
of integration. Sample Learning Goals Given a function sketch, the derivative, or integral curves ; Use the language of calculus to discuss motion. , the response to an input when the system has zero initial conditions) of a system to an arbitrary input by using the impulse response of a system. Secondly, your question... | {
"domain": "slowscape.it",
"id": null,
"lm_label": "1. YES\n2. YES\n\n",
"lm_name": "Qwen/Qwen-72B",
"lm_q1_score": 0.9822877038891779,
"lm_q1q2_score": 0.8076262646235371,
"lm_q2_score": 0.822189121808099,
"openwebmath_perplexity": 479.3420013305369,
"openwebmath_score": 0.8485875129699707,
"tags"... |
ros
Title: Get sensor_msgs/LaserScan message from simulation(v-rep)
Hello all,
is it possible to use LMS1xx package, but get the messages from simulation(eg. in vrep) instead of the real laser scanner?
Thanks in advance.
Originally posted by Yami on ROS Answers with karma: 1 on 2013-09-25
Post score: 0
It should wo... | {
"domain": "robotics.stackexchange",
"id": 15648,
"lm_label": null,
"lm_name": null,
"lm_q1_score": null,
"lm_q1q2_score": null,
"lm_q2_score": null,
"openwebmath_perplexity": null,
"openwebmath_score": null,
"tags": "ros",
"url": null
} |
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