kernel_id
int64
24.2k
23.3M
prompt
stringlengths
8
1.85M
completetion
stringlengths
1
182k
comp_name
stringlengths
5
57
5,106,186
count_low=0 count_mid=0 count_high=0 def filter_2cls_raw(row, low_thr=0.08, high_thr=0.95): global count_low global count_mid global count_high prob = row['target'] if prob<low_thr: row['PredictionString'] = '14 1 0 0 1 1' count_low+=1 elif low_thr<=prob<high_thr: row['PredictionString']+=f' 14 {prob} 0 0 1 1' count_mi...
train_df.groupby(pd.cut(train_df["Fare"], np.arange(0, 350, 25)))['Survived'].sum() / train_df.groupby(pd.cut(train_df["Fare"], np.arange(0, 350, 25)))['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
sub_raw = pred_raw.apply(filter_2cls_raw, axis=1) print(count_low/3000,count_mid/3000,count_high/3000) sub_raw[60:63]<groupby>
train_df['CabinId'] = train_df['Cabin'].apply(lambda x: 'None' if pd.isna(x)else x[0]) train_df.groupby(['CabinId'])['Survived'].sum() / train_df.groupby(['CabinId'])['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
count_low=0 count_mid=0 count_high=0 def filter_2cls(row, low_thr=0.05, high_thr=0.99): global count_low global count_mid global count_high prob = row['target'] if prob<low_thr: row['PredictionString'] = '14 1 0 0 1 1' count_low+=1 elif low_thr<=prob<high_thr: row['PredictionString']+=f' 14 {prob} 0 0 1 1' count_mid+=1...
train_df.drop(['CabinId'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
5,106,186
sub = pred.apply(filter_2cls, axis=1) print(count_low/3000,count_mid/3000,count_high/3000) sub[60:63]<merge>
train_df.groupby(['Embarked'])['Survived'].sum() / train_df.groupby(['Embarked'])['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
merge_sub = pd.merge(sub_raw, sub, on = 'image_id', how = 'left' )<save_to_csv>
train_df['Title'] = train_df['Name'].apply(lambda x: re.compile('.+?[,][\s] (.*?)[\.][\s].+' ).findall(x)[0]) train_df.groupby(['Title'])['Survived'].sum() / train_df.groupby(['Title'])['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
merge_sub.to_csv('merge_sub.csv',index = False )<count_values>
train_df.groupby(['Title'])['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
sub['PredictionString'].value_counts().iloc[[0]]<save_to_csv>
train_df.drop(['Title'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
5,106,186
sub_raw[['image_id', 'PredictionString']].to_csv('submission_raw.csv',index = False )<save_to_csv>
np.nanmean(train_df[train_df['Name'].str.contains('Master')]['Age'] )
Titanic - Machine Learning from Disaster
5,106,186
sub[['image_id', 'PredictionString']].to_csv('submission.csv',index = False )<import_modules>
np.nanmean(train_df[train_df['Name'].str.contains('Miss')]['Age'] )
Titanic - Machine Learning from Disaster
5,106,186
import numpy as np, pandas as pd from glob import glob import shutil, os import matplotlib.pyplot as plt from sklearn.model_selection import GroupKFold from tqdm.notebook import tqdm import seaborn as sns<define_variables>
merged_df['Title'] = merged_df['Name'].apply(lambda x: re.compile('.+?[,][\s] (.*?)[\.][\s].+' ).findall(x)[0] )
Titanic - Machine Learning from Disaster
5,106,186
dim = 512 test_dir = f'/kaggle/input/vinbigdata-{dim}-image-dataset/vinbigdata/test' weights_dir = '/kaggle/input/chest-x-ray-abnormality-detection-with-yolo-v3/yolov3/runs/train/exp/weights/best.pt'<load_from_csv>
boymean = np.nanmean(train_df[train_df['Name'].str.contains('Master.')]['Age']) girlmean = np.nanmean(train_df[train_df['Name'].str.contains('Miss.')]['Age']) meanage = np.nanmean(train_df['Age'] )
Titanic - Machine Learning from Disaster
5,106,186
test_df = pd.read_csv(f'/kaggle/input/vinbigdata-{dim}-image-dataset/vinbigdata/test.csv') test_df.head()<set_options>
merged_df['Age'] = np.where(np.isnan(merged_df['Age'])&(merged_df['Title'] == 'Master'), boymean, merged_df['Age']) merged_df['Age'] = np.where(np.isnan(merged_df['Age'])&(merged_df['Title'] == 'Miss'), girlmean, merged_df['Age']) merged_df['Age'] = merged_df['Age'].fillna(meanage )
Titanic - Machine Learning from Disaster
5,106,186
shutil.copytree('/kaggle/input/yolov5-official-v31-dataset/yolov5', '/kaggle/working/yolov5') os.chdir('/kaggle/working/yolov5') clear_output() print('Setup complete.Using torch %s %s' %(torch.__version__, torch.cuda.get_device_properties(0)if torch.cuda.is_available() else 'CPU'))<install_modules>
merged_df['Fare'] = merged_df['Fare'].fillna(np.nanmedian(merged_df['Fare'])) merged_df['Fare'] = merged_df['Fare'].apply(lambda x: 1 if x > 75.0 else 0 )
Titanic - Machine Learning from Disaster
5,106,186
!python detect.py --weights $weights_dir\ --img 512\ --conf 0.15\ --iou 0.4\ --source $test_dir\ --save-txt --save-conf --exist-ok<categorify>
merged_df['Cabin'] = merged_df['Cabin'].apply(lambda x: 0 if pd.isna(x)else 1 )
Titanic - Machine Learning from Disaster
5,106,186
def yolo2voc(image_height, image_width, bboxes): bboxes = bboxes.copy().astype(float) bboxes[..., [0, 2]] = bboxes[..., [0, 2]]* image_width bboxes[..., [1, 3]] = bboxes[..., [1, 3]]* image_height bboxes[..., [0, 1]] = bboxes[..., [0, 1]] - bboxes[..., [2, 3]]/2 bboxes[..., [2, 3]] = bboxes[..., [0, 1]] + bboxes[......
merged_df['Embarked'] = merged_df['Embarked'].fillna('N' )
Titanic - Machine Learning from Disaster
5,106,186
image_ids = [] PredictionStrings = [] for file_path in tqdm(glob('runs/detect/exp/labels/*txt')) : image_id = file_path.split('/')[-1].split('.')[0] w, h = test_df.loc[test_df.image_id==image_id,['width', 'height']].values[0] f = open(file_path, 'r') data = np.array(f.read().replace(' ', ' ' ).strip().split(' ')).asty...
merged_df['Family'] = merged_df['Parch'] + merged_df['SibSp']
Titanic - Machine Learning from Disaster
5,106,186
pred_df = pd.DataFrame({'image_id':image_ids, 'PredictionString':PredictionStrings}) sub_df = pd.merge(test_df, pred_df, on = 'image_id', how = 'left' ).fillna("14 1 0 0 1 1") sub_df = sub_df[['image_id', 'PredictionString']] sub_df.to_csv('/kaggle/working/submission.csv',index = False) sub_df.tail()<install_modules...
merged_df.drop(['Name', 'Ticket', 'SibSp', 'Parch'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
5,106,186
shutil.rmtree('/kaggle/working/yolov5' )<set_options>
train_df.groupby(pd.cut(train_df["Age"], np.arange(0, 100, 20)))['Survived'].sum() / train_df.groupby(pd.cut(train_df["Age"], np.arange(0, 100, 20)))['Survived'].count()
Titanic - Machine Learning from Disaster
5,106,186
py.init_notebook_mode(connected=True) pio.templates.default = "plotly_dark" pd.set_option('max_columns', 50) <set_options>
maxAge = train_df['Age'].max() minAge = train_df['Age'].min() merged_df['Age'] =(merged_df['Age'] - minAge)/(maxAge - minAge )
Titanic - Machine Learning from Disaster
5,106,186
!nvidia-smi<install_modules>
dummiesPclass = pd.get_dummies(merged_df['Pclass'], prefix = 'Pclass') merged_df = pd.concat([merged_df, dummiesPclass], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
!nvcc --version<import_modules>
dummiesFare = pd.get_dummies(merged_df['Fare'], prefix = 'Fare') merged_df = pd.concat([merged_df, dummiesFare], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
torch.__version__<install_modules>
merged_df.groupby(['Title'])['PassengerId'].count()
Titanic - Machine Learning from Disaster
5,106,186
!pip install detectron2 -f \ https://dl.fbaipublicfiles.com/detectron2/wheels/cu102/torch1.7/index.html<define_variables>
merged_df['Title'] = merged_df['Title'].apply(lambda x: 'Miss' if(x in ['Mlle', 'Mme', 'Ms'])else x) merged_df['Title'] = merged_df['Title'].apply(lambda x: 'Mrs' if(x in ['Dona', 'Lady'])else x) merged_df['Title'] = merged_df['Title'].apply(lambda x: 'Mr' if(x == 'Rev')else x) merged_df['Title'] = merged_df['Title'...
Titanic - Machine Learning from Disaster
5,106,186
def get_vinbigdata_dicts( imgdir: Path, train_df: pd.DataFrame, train_data_type: str = "original", use_cache: bool = True, debug: bool = True, target_indices: Optional[np.ndarray] = None, use_class14: bool = False, ): debug_str = f"_debug{int(debug)}" train_data_type_str = f"_{train_data_type}" class14_str = f"_14cla...
merged_df.groupby(['Title'])['PassengerId'].count()
Titanic - Machine Learning from Disaster
5,106,186
def format_pred(labels: ndarray, boxes: ndarray, scores: ndarray)-> str: pred_strings = [] for label, score, bbox in zip(labels, scores, boxes): xmin, ymin, xmax, ymax = bbox.astype(np.int64) pred_strings.append(f"{label} {score} {xmin} {ymin} {xmax} {ymax}") return " ".join(pred_strings) def predict_batch(predictor...
le = LabelEncoder() merged_df['Title'] = le.fit_transform(merged_df['Title'] )
Titanic - Machine Learning from Disaster
5,106,186
def save_yaml(filepath: Union[str, Path], content: Any, width: int = 120): with open(filepath, "w")as f: yaml.dump(content, f, width=width) def load_yaml(filepath: Union[str, Path])-> Any: with open(filepath, "r")as f: content = yaml.full_load(f) return content <define_variables>
dummiesTitle = pd.get_dummies(merged_df['Title'], prefix = 'Title') merged_df = pd.concat([merged_df, dummiesTitle], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
thing_classes = [ "Aortic enlargement", "Atelectasis", "Calcification", "Cardiomegaly", "Consolidation", "ILD", "Infiltration", "Lung Opacity", "Nodule/Mass", "Other lesion", "Pleural effusion", "Pleural thickening", "Pneumothorax", "Pulmonary fibrosis" ] category_name_to_id = {class_name: index for index, class_name i...
merged_df['Sex'] = le.fit_transform(merged_df['Sex']) dummiesSex = pd.get_dummies(merged_df['Sex'], prefix = 'Sex') merged_df = pd.concat([merged_df, dummiesSex], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
@dataclass class Flags: debug: bool = True outdir: str = "results/det" imgdir_name: str = "vinbigdata-chest-xray-resized-png-256x256" split_mode: str = "all_train" seed: int = 111 train_data_type: str = "original" use_class14: bool = False iter: int = 10000 ims_per_batch: int = 2 num_workers: int = 4 lr_scheduler_name:...
dummiesCabin = pd.get_dummies(merged_df['Cabin'], prefix = 'Cabin') merged_df = pd.concat([merged_df, dummiesCabin], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
inputdir = Path("/kaggle/input") traineddir = inputdir / "vinbigdata-alb-aug-512-cos" flags: Flags = Flags().update(load_yaml(str(traineddir/"flags.yaml"))) print("flags", flags) debug = flags.debug outdir = Path(flags.outdir) os.makedirs(str(outdir), exist_ok=True) datadir = inputdir / "vinbigdata-chest-xray-abno...
merged_df['Embarked'] = le.fit_transform(merged_df['Embarked']) dummiesEmbarked = pd.get_dummies(merged_df['Embarked'], prefix = 'Embarked') merged_df = pd.concat([merged_df, dummiesEmbarked], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
cfg = get_cfg() original_output_dir = cfg.OUTPUT_DIR cfg.OUTPUT_DIR = str(outdir) print(f"cfg.OUTPUT_DIR {original_output_dir} -> {cfg.OUTPUT_DIR}") cfg.merge_from_file(model_zoo.get_config_file("COCO-Detection/faster_rcnn_R_50_FPN_3x.yaml")) cfg.DATASETS.TRAIN =("vinbigdata_train",) cfg.DATASETS.TEST =() cfg.DATALO...
merged_df['Family'] = merged_df['Family'].apply(lambda x: 'N' if x == 0 else('S' if x < 4 else 'L'))
Titanic - Machine Learning from Disaster
5,106,186
submission_det = pd.DataFrame(results_list, columns=['image_id', 'PredictionString']) submission_det.to_csv(outdir/"submission.csv", index=False) submission_det<import_modules>
merged_df['Family'] = le.fit_transform(merged_df['Family']) dummiesFamily = pd.get_dummies(merged_df['Family'], prefix = 'Family') merged_df = pd.concat([merged_df, dummiesFamily], axis=1) merged_df.head()
Titanic - Machine Learning from Disaster
5,106,186
import pandas as pd import numpy as np from glob import glob import shutil<define_variables>
merged_df.drop(['Pclass', 'Sex', 'Fare', 'Cabin', 'Embarked', 'Title', 'Family'], axis = 1, inplace = True )
Titanic - Machine Learning from Disaster
5,106,186
low_thr = 0.08 high_thr = 0.95<load_from_csv>
train_df_x = merged_df[:891] test_df_x = merged_df[891:]
Titanic - Machine Learning from Disaster
5,106,186
pred_14cls = pd.read_csv('.. /input/vinbigdata-14-class-submission-lb0154/submission.csv') pred_2cls = pd.read_csv('.. /input/vinbigdata-2class-prediction/2-cls test pred.csv' )<merge>
train_df_y = train_df['Survived']
Titanic - Machine Learning from Disaster
5,106,186
pred = pd.merge(pred_14cls, pred_2cls, on = 'image_id', how = 'left') pred.head()<count_values>
train_df = train_df_x.copy() train_df['Survived'] = train_df_y train_df.drop(['PassengerId'], axis = 1, inplace = True) train_df.head()
Titanic - Machine Learning from Disaster
5,106,186
pred['PredictionString'].value_counts().iloc[[0]]<feature_engineering>
def train_and_test(model_specific_tasks, df, it = 20): accsum = 0 minacc = 1.0 maxacc = 0 for i in range(it): print('Iteration: ',(i + 1), end = '\r') train, test = train_test_split(df, test_size=0.2) train_x = train.drop(['Survived'], axis=1) test_x = test.drop(['Survived'], axis=1) train_y = train['Survived'] tes...
Titanic - Machine Learning from Disaster
5,106,186
def filter_2cls(row, low_thr=low_thr, high_thr=high_thr): prob = row['target'] if prob<low_thr: row['PredictionString'] = '14 1 0 0 1 1' elif low_thr<=prob<high_thr: row['PredictionString']+=f' 14 {prob} 0 0 1 1' elif high_thr<=prob: row['PredictionString'] = row['PredictionString'] else: raise ValueError('Prediction m...
def logistic_reg(train_x, train_y, test_x, test_y): model = LogisticRegression(solver='sag', max_iter=1000) model.fit(train_x, train_y) return model.score(test_x, test_y )
Titanic - Machine Learning from Disaster
5,106,186
sub = pred.apply(filter_2cls, axis=1) sub.head()<count_values>
train_and_test(logistic_reg, train_df.copy() , it = 50 )
Titanic - Machine Learning from Disaster
5,106,186
sub['PredictionString'].value_counts().iloc[[0]]<save_to_csv>
def rfc(train_x, train_y, test_x, test_y): model = RandomForestClassifier(n_estimators=100) model.fit(train_x, train_y) return model.score(test_x, test_y )
Titanic - Machine Learning from Disaster
5,106,186
sub[['image_id', 'PredictionString']].to_csv('submission.csv',index = False )<set_options>
train_and_test(rfc, train_df.copy() )
Titanic - Machine Learning from Disaster
5,106,186
warnings.filterwarnings("ignore") DIR_INPUT = '/kaggle/input/vinbigdata-chest-xray-abnormalities-detection' DIR_TRAIN = f'{DIR_INPUT}/train' DIR_TEST = f'{DIR_INPUT}/test' DIR_WEIGHTS = '.. /input/chest-x-ray-abnormalities-detection' WEIGHTS_FILE = f'{DIR_WEIGHTS}/model_state.pth'<load_from_csv>
def nn(train_x, train_y, test_x, test_y): model = Sequential() model.add(layers.Dense(32, activation='relu', input_shape =(22,))) model.add(layers.Dropout(0.5)) model.add(layers.Dense(8, activation='relu')) model.add(layers.Dense(1, activation='sigmoid')) model.compile(optimizer='rmsprop', loss='binary_crossentropy', ...
Titanic - Machine Learning from Disaster
5,106,186
<categorify><EOS>
train_and_test(nn, train_df.copy() , it = 10 )
Titanic - Machine Learning from Disaster
4,456,876
<SOS> metric: categorizationaccuracy Kaggle data source: titanic-machine-learning-from-disaster<load_pretrained>
%matplotlib inline py.init_notebook_mode(connected=True) train = pd.read_csv('.. /input/train.csv') test = pd.read_csv('.. /input/test.csv') PassengerId = test['PassengerId'] train.head(3)
Titanic - Machine Learning from Disaster
4,456,876
model = torchvision.models.detection.fasterrcnn_resnet50_fpn( pretrained=False, pretrained_backbone=False, )<find_best_params>
original_train = train.copy() full_data = [train, test] train['Has_Cabin'] = train["Cabin"].apply(lambda x: 0 if type(x)== float else 1) test['Has_Cabin'] = test["Cabin"].apply(lambda x: 0 if type(x)== float else 1) for dataset in full_data: dataset['FamilySize'] = dataset['SibSp'] + dataset['Parch'] + 1 for dataset ...
Titanic - Machine Learning from Disaster
4,456,876
device = torch.device('cuda')if torch.cuda.is_available() else torch.device('cpu') num_classes = 15 in_features = model.roi_heads.box_predictor.cls_score.in_features model.roi_heads.box_predictor = FastRCNNPredictor(in_features, num_classes) model.load_state_dict(torch.load(WEIGHTS_FILE, map_location=device)) model.e...
def get_title(name): title_search = re.search('([A-Za-z]+)\.', name) if title_search: return title_search.group(1) return "" for dataset in full_data: dataset['Title'] = dataset['Name'].apply(get_title) for dataset in full_data: dataset['Title'] = dataset['Title'].replace(['Lady', 'Countess','Capt', 'Col','Don', 'Dr...
Titanic - Machine Learning from Disaster
4,456,876
def collate_fn(batch): return tuple(zip(*batch)) test_dataset = VinBigTestDataset(test_df, DIR_TEST, get_test_transform()) test_data_loader = DataLoader( test_dataset, batch_size=6, shuffle=False, num_workers=4, drop_last=False, collate_fn=collate_fn )<define_variables>
drop_elements = ['PassengerId', 'Name', 'Ticket', 'Cabin', 'SibSp'] train = train.drop(drop_elements, axis = 1) test = test.drop(drop_elements, axis = 1 )
Titanic - Machine Learning from Disaster
4,456,876
def format_prediction_string(labels, boxes, scores): pred_strings = [] for j in zip(labels, scores, boxes): pred_strings.append("{0} {1:.4f} {2} {3} {4} {5}".format( j[0], j[1], j[2][0], j[2][1], j[2][2], j[2][3])) return " ".join(pred_strings )<categorify>
train[['Title', 'Survived']].groupby(['Title'], as_index=False ).agg(['mean', 'count', 'sum'])
Titanic - Machine Learning from Disaster
4,456,876
detection_threshold = 0.2 results = [] with torch.no_grad() : for images, image_ids in test_data_loader: images = list(image.to(device)for image in images) outputs = model(images) for i, image in enumerate(images): image_id = image_ids[i] result = { 'image_id': image_id, 'PredictionString': '14 1.0 0 0 1 1' } boxes =...
train[['Sex', 'Survived']].groupby(['Sex'], as_index=False ).agg(['mean', 'count', 'sum'])
Titanic - Machine Learning from Disaster
4,456,876
test_df = pd.DataFrame(results, columns=['image_id', 'PredictionString']) test_df.head()<save_to_csv>
title_and_sex = original_train.copy() [['Name', 'Sex']] title_and_sex['Title'] = title_and_sex['Name'].apply(get_title) title_and_sex['Sex'] = title_and_sex['Sex'].map({'female': 0, 'male': 1} ).astype(int) title_and_sex[['Title', 'Sex']].groupby(['Title'], as_index=False ).agg(['mean', 'count', 'sum'])
Titanic - Machine Learning from Disaster
4,456,876
test_df.to_csv('submission.csv', index=False )<install_modules>
def get_gini_impurity(survived_count, total_count): survival_prob = survived_count/total_count not_survival_prob =(1- survival_prob) random_observation_survived_prob = survival_prob random_observation_not_survived_prob =(1 - random_observation_survived_prob) mislabelling_survided_prob = not_survival_prob * random_obs...
Titanic - Machine Learning from Disaster
4,456,876
!pip install timm==0.1.26<set_options>
gini_impurity_starting_node = get_gini_impurity(342,891) gini_impurity_starting_node
Titanic - Machine Learning from Disaster
4,456,876
sys.path.insert(0, ".. /input/efficientdet-torch") sys.path.insert(0, ".. /input/omegaconf") sys.path.insert(0, ".. /input/weightedboxesfusion") warnings.filterwarnings('ignore' )<categorify>
gini_impurity_men = get_gini_impurity(109, 577) print(gini_impurity_men) gini_impurity_women = get_gini_impurity(233, 314) print(gini_impurity_women )
Titanic - Machine Learning from Disaster
4,456,876
def get_valid_transforms() : return A.Compose([ A.Resize(height=1024, width=1024, p=1.0), ToTensorV2(p=1.0), ], p=1.0 )<normalization>
gini_impurity_title_Mr = get_gini_impurity(81, 517) print(gini_impurity_title_Mr) gini_impurity_title_others = get_gini_impurity(261, 374) print(gini_impurity_title_others )
Titanic - Machine Learning from Disaster
4,456,876
image_dir = ".. /input/vinbigdata-chest-xray-abnormalities-detection/test" class DatasetRetriever(Dataset): def __init__(self, image_ids, transforms=None): super().__init__() self.image_ids = image_ids self.transforms = transforms def __getitem__(self, index: int): image_id = self.image_ids[index] dicom = pydicom.dcmre...
men_weight = 577/891 women_weight = 314/891 weighted_gini_impurity_sex_split =(gini_impurity_men * men_weight)+(gini_impurity_women * women_weight) print(weighted_gini_impurity_sex_split) title_1_weight = 517/891 title_others_weight = 374/891 weighted_gini_impurity_title_split =(gini_impurity_title_Mr * title_1_weigh...
Titanic - Machine Learning from Disaster
4,456,876
image_ids = glob(os.path.join('.. /input/vinbigdata-chest-xray-abnormalities-detection/test', "*.dicom")) image_ids = [image_id.split('/')[-1].split('.')[0] for image_id in image_ids] dataset = DatasetRetriever(image_ids = np.array(image_ids), transforms = get_valid_transforms()) def collate_fn(batch): return tuple(zi...
sex_gini_decrease = weighted_gini_impurity_sex_split - gini_impurity_starting_node print(sex_gini_decrease) title_gini_decrease = weighted_gini_impurity_title_split - gini_impurity_starting_node print(title_gini_decrease)
Titanic - Machine Learning from Disaster
4,456,876
device = torch.device('cuda:0')if torch.cuda.is_available() else torch.device('cpu') def load_net(checkpoint_path): config = get_efficientdet_config('tf_efficientdet_d4') net = EfficientDet(config, pretrained_backbone=False) config.num_classes = 14 config.image_size = 1024 net.class_net = HeadNet(config, num_outputs...
cv = KFold(n_splits = 10) accuracies = list() max_attributes = len(list(test)) depth_range = range(1, max_attributes + 1) for depth in depth_range: fold_accuracy = [] tree_model = tree.DecisionTreeClassifier(max_depth = depth) for train_fold, valid_fold in cv.split(train): f_train = train.loc[train_fold] f_valid = t...
Titanic - Machine Learning from Disaster
4,456,876
def make_predictions(images, score_threshold=0.22): images = torch.stack(images ).cuda().float() predictions = [] with torch.no_grad() : det = net(images, image_scales=torch.tensor([1] * images.shape[0] ).float().cuda()) for i in range(images.shape[0]): boxes = det[i].detach().cpu().numpy() [:, :4] scores = det[i].det...
y_train = train['Survived'] x_train = train.drop(['Survived'], axis=1 ).values x_test = test.values decision_tree = tree.DecisionTreeClassifier(max_depth = 3) decision_tree.fit(x_train, y_train) y_pred = decision_tree.predict(x_test) submission = pd.DataFrame({"PassengerId": PassengerId,"Survived": y_pred}) submiss...
Titanic - Machine Learning from Disaster
4,456,876
mapping = {0: 'Aortic enlargement', 1: 'Atelectasis', 2: 'Calcification', 3: 'Cardiomegaly', 4: 'Consolidation', 5: 'ILD',6: 'Infiltration', 7: 'Lung Opacity', 8: 'Nodule/Mass', 9: 'Other lesion', 10: 'Pleural effusion', 11: 'Pleural thickening',12: 'Pneumothorax', 13: 'Pulmonary fibrosis'} font = cv2.FONT_HERSHEY_SIMP...
with open("tree1.dot", 'w')as f: f = tree.export_graphviz(decision_tree, out_file=f, max_depth = 3, impurity = True, feature_names = list(train.drop(['Survived'], axis=1)) , class_names = ['Died', 'Survived'], rounded = True, filled= True) check_call(['dot','-Tpng','tree1.dot','-o','tree1.png']) img = Image.open("tre...
Titanic - Machine Learning from Disaster
4,456,876
<predict_on_test><EOS>
acc_decision_tree = round(decision_tree.score(x_train, y_train)* 100, 2) acc_decision_tree
Titanic - Machine Learning from Disaster
3,974,929
<SOS> metric: categorizationaccuracy Kaggle data source: titanic-machine-learning-from-disaster<save_to_csv>
%matplotlib inline
Titanic - Machine Learning from Disaster
3,974,929
test_df = pd.DataFrame(results, columns=['image_id', 'PredictionString']) test_df.to_csv('submission.csv', index=False )<load_from_csv>
train_df = pd.read_csv(".. /input/train.csv") test_df = pd.read_csv(".. /input/test.csv") combine = [train_df,test_df] print(combine )
Titanic - Machine Learning from Disaster
3,974,929
items = pd.read_csv('.. /input/competitive-data-science-predict-future-sales/items.csv') shops = pd.read_csv('.. /input/competitive-data-science-predict-future-sales/shops.csv') cats = pd.read_csv('.. /input/competitive-data-science-predict-future-sales/item_categories.csv') train = pd.read_csv('.. /input/competitiv...
train_df[['Pclass','Survived']].groupby(['Pclass'],as_index=False ).mean().sort_values(by='Survived',ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
train = train[train.item_price<100000] train = train[train.item_cnt_day<1001] train["item_cnt_day"]=train["item_cnt_day"].fillna(0) train = train[train.item_cnt_day>0] median = train[(train.shop_id==32)&(train.item_id==2973)&(train.date_block_num==4)&(train.item_price>0)].item_price.median() train.loc[train.item_price...
train_df[['Sex','Survived']].groupby(['Sex'],as_index=False ).mean().sort_values(by='Survived',ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
def check_nulls(df_train): for d in df_train.columns: if df_train[d].isnull().values.any() : print("column "+d) if df_train[d].dtype.kind in 'bifc': df_train[d].fillna(0,inplace = True) else: print("column "+d) df_train[d].fillna("NULL_VALUE", inplace = True )<categorify>
train_df[['SibSp','Survived']].groupby(['SibSp'],as_index=False ).mean().sort_values(by='Survived',ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
shops['city'] = shops['shop_name'].str.split(' ' ).map(lambda x: x[0]) shops['city_code'] = LabelEncoder().fit_transform(shops['city']) cats['split'] = cats['item_category_name'].str.split('-') cats['type'] = cats['split'].map(lambda x: x[0].strip()) cats['type_code'] = LabelEncoder().fit_transform(cats['type']) c...
train_df[['Parch','Survived']].groupby(['Parch'],as_index=False ).mean().sort_values(by='Survived',ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
check_count = shops.groupby(["shop_id"])['shop_id'].size() print(check_count[check_count > 1]) check_count = cats.groupby(["item_category_id"])['item_category_id'].size() print(check_count[check_count > 1]) <groupby>
for dataset in combine: dataset['Title'] = dataset.Name.str.extract('([A-Za-z]+)\.', expand=False) pd.crosstab(train_df['Title'], train_df['Sex'] )
Titanic - Machine Learning from Disaster
3,974,929
check_count = train.groupby(["date","date_block_num","shop_id","item_id"])['shop_id'].size() print(check_count[check_count > 1]) <filter>
for dataset in combine: dataset['Title'] = dataset['Title'].replace(['Lady', 'Countess','Capt', 'Col',\ 'Don', 'Dr', 'Major', 'Rev', 'Sir', 'Jonkheer', 'Dona'], 'Rare') dataset['Title'] = dataset['Title'].replace('Mlle', 'Miss') dataset['Title'] = dataset['Title'].replace('Ms', 'Miss') dataset['Title'] = dataset['T...
Titanic - Machine Learning from Disaster
3,974,929
train.query("date_block_num==16 and shop_id==50 and item_id==3423" )<merge>
title_mapping = {"Mr": 1, "Miss": 2, "Mrs": 3, "Master": 4, "Rare": 5} for dataset in combine: dataset['Title'] = dataset['Title'].map(title_mapping) dataset['Title'] = dataset['Title'].fillna(0) train_df.head()
Titanic - Machine Learning from Disaster
3,974,929
test["date_block_num"]=34 test = pd.merge(test, shops, on=['shop_id'], how='left',suffixes=('', '_x')) test = pd.merge(test, items, on=['item_id'], how='left',suffixes=('', '_y')) test = pd.merge(test, cats, on=['item_category_id'], how='left') test.columns<groupby>
train_df = train_df.drop(['Name', 'PassengerId'], axis=1) test_df = test_df.drop(['Name'], axis=1) combine = [train_df, test_df] train_df.shape, test_df.shape
Titanic - Machine Learning from Disaster
3,974,929
check_count = test.groupby(["shop_id","item_id"])['shop_id'].size() print(check_count[check_count > 1]) <create_dataframe>
for dataset in combine: dataset['Sex'] = dataset['Sex'].map({'female': 1, 'male': 0} ).astype(int) train_df.head()
Titanic - Machine Learning from Disaster
3,974,929
train_2 = pd.DataFrame(np.vstack(train_2)) <rename_columns>
guess_ages = np.zeros(( 2,3)) guess_ages
Titanic - Machine Learning from Disaster
3,974,929
train_2.rename(columns={0: "date_block_num", 1: "shop_id", 2: "item_id"} , inplace = True) train_2<merge>
for dataset in combine: for i in range(0, 2): for j in range(0, 3): guess_df = dataset[(dataset['Sex'] == i)& \ (dataset['Pclass'] == j+1)]['Age'].dropna() age_guess = guess_df.median() guess_ages[i,j] = int(age_guess/0.5 + 0.5)* 0.5 for i in range(0, 2): for j in range(0, 3): dataset.loc[(dataset.Age.isnull())&(datas...
Titanic - Machine Learning from Disaster
3,974,929
cols=['date_block_num','shop_id','item_id'] group = train.groupby(['date_block_num','shop_id','item_id'] ).agg({'item_cnt_day': ['sum']}) group.columns = ['item_cnt_month'] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=cols, how='left') train_2['item_cnt_month'] =(train_2['item_cnt_month'] ....
train_df['AgeBand'] = pd.cut(train_df['Age'], 5) train_df[['AgeBand', 'Survived']].groupby(['AgeBand'], as_index=False ).mean().sort_values(by='AgeBand', ascending=True )
Titanic - Machine Learning from Disaster
3,974,929
train_2 = pd.merge(train_2, shops, on=['shop_id'], how='left',suffixes=('', '_x')) train_2 = pd.merge(train_2, items, on=['item_id'], how='left',suffixes=('', '_y')) train_2 = pd.merge(train_2, cats, on=['item_category_id'], how='left') <groupby>
for dataset in combine: dataset.loc[ dataset['Age'] <= 16, 'Age'] = 0 dataset.loc[(dataset['Age'] > 16)&(dataset['Age'] <= 32), 'Age'] = 1 dataset.loc[(dataset['Age'] > 32)&(dataset['Age'] <= 48), 'Age'] = 2 dataset.loc[(dataset['Age'] > 48)&(dataset['Age'] <= 64), 'Age'] = 3 dataset.loc[ dataset['Age'] > 64, 'Age'] tr...
Titanic - Machine Learning from Disaster
3,974,929
check_count = train_2.groupby(["date_block_num","shop_id","item_id"])['shop_id'].size() print(check_count[check_count > 1]) <concatenate>
train_df = train_df.drop(['AgeBand'], axis=1) combine = [train_df, test_df] train_df.head()
Titanic - Machine Learning from Disaster
3,974,929
cols = ['shop_id','item_id'] train_2 = pd.concat([train_2, test], ignore_index=True, sort=False, keys=cols )<groupby>
for dataset in combine: dataset['FamilySize'] = dataset['SibSp'] + dataset['Parch'] + 1 train_df[['FamilySize', 'Survived']].groupby(['FamilySize'], as_index=False ).mean().sort_values(by='Survived', ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
def sum_df(df,columns,target): x= [] name=target+"_sum" data = columns.split(",") for col in data: x.append(col) print(x) return df.groupby(x)[target].sum().to_frame(name ).reset_index() def mean_df(df,columns,target): x= [] name=target+"_mean" data = columns.split(",") for col in data: x.append(col) print(x) ret...
for dataset in combine: dataset['IsAlone'] = 0 dataset.loc[dataset['FamilySize'] == 1, 'IsAlone'] = 1 train_df[['IsAlone', 'Survived']].groupby(['IsAlone'], as_index=False ).mean()
Titanic - Machine Learning from Disaster
3,974,929
def lag_feature(df, lags, col): tmp = df[['date_block_num','shop_id','item_id',col]] for i in lags: shifted = tmp.copy() shifted.columns = ['date_block_num','shop_id','item_id', col+'_lag_'+str(i)] shifted['date_block_num'] += i df = pd.merge(df, shifted, on=['date_block_num','shop_id','item_id'], how='left') return d...
train_df = train_df.drop(['Parch', 'SibSp', 'FamilySize'], axis=1) test_df = test_df.drop(['Parch', 'SibSp', 'FamilySize'], axis=1) combine = [train_df, test_df] train_df.head()
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num'] ).agg({'item_cnt_month': ['mean']}) group.columns = [ 'date_avg_item_cnt' ] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num'], how='left') train_2['date_avg_item_cnt'] = train_2['date_avg_item_cnt'].astype(np.float16) train_2 = lag_fe...
for dataset in combine: dataset['Age*Class'] = dataset.Age * dataset.Pclass train_df.loc[:, ['Age*Class', 'Age', 'Pclass']].head(10 )
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'city_code'] ).agg({'item_cnt_month': ['mean']}) group.columns = [ 'date_city_avg_item_cnt' ] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num', 'city_code'], how='left') train_2['date_city_avg_item_cnt'] = train_2['date_city_avg_item_c...
freq_port = train_df.Embarked.dropna().mode() [0] freq_port
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id', 'item_category_id'] ).agg({'item_cnt_month': ['mean']}) group.columns = ['date_shop_cat_avg_item_cnt'] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num', 'shop_id', 'item_category_id'], how='left') train_2['date_shop_cat_avg_...
for dataset in combine: dataset['Embarked'] = dataset['Embarked'].fillna(freq_port) train_df[['Embarked', 'Survived']].groupby(['Embarked'], as_index=False ).mean().sort_values(by='Survived', ascending=False )
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id', 'item_id'] ).agg({'item_cnt_month': ['median']}) group.columns = ['date_shop_item_med_item_cnt'] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num', 'shop_id', 'item_id'], how='left') train_2['date_shop_item_med_item_cnt'] = t...
for dataset in combine: dataset['Embarked'] = dataset['Embarked'].map({'S': 0, 'C': 1, 'Q': 2} ).astype(int) train_df.head()
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id'] ).agg({'item_cnt_month': ['median']}) group.columns = ['date_shop_med_item_cnt'] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num', 'shop_id'], how='left') train_2['date_shop_med_item_cnt'] = train_2['date_shop_med_item_cnt']...
test_df['Fare'].fillna(test_df['Fare'].dropna().median() , inplace=True) test_df.head()
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id','item_category_id'] ).agg({'item_cnt_month': ['median']}) group.columns = ['date_shop_cat_med_item_cnt'] group.reset_index(inplace=True) train_2 = pd.merge(train_2, group, on=['date_block_num', 'shop_id','item_category_id'], how='left') train_2['date_shop_cat_med_...
train_df['FareBand'] = pd.qcut(train_df['Fare'], 4) train_df[['FareBand', 'Survived']].groupby(['FareBand'], as_index=False ).mean().sort_values(by='FareBand', ascending=True )
Titanic - Machine Learning from Disaster
3,974,929
train_2.columns <data_type_conversions>
for dataset in combine: dataset.loc[ dataset['Fare'] <= 7.91, 'Fare'] = 0 dataset.loc[(dataset['Fare'] > 7.91)&(dataset['Fare'] <= 14.454), 'Fare'] = 1 dataset.loc[(dataset['Fare'] > 14.454)&(dataset['Fare'] <= 31), 'Fare'] = 2 dataset.loc[ dataset['Fare'] > 31, 'Fare'] = 3 dataset['Fare'] = dataset['Fare'].astype(int)...
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id','item_id'])['item_cnt_month'].quantile (.25) group.columns = ['date_shop_item_q25_item_cnt'] dfx=pd.DataFrame() dfx["date_shop_item_q25_item_cnt"]=group print(train_2.columns) train_2 = pd.merge(train_2, dfx, on=['date_block_num', 'shop_id','item_id'], how='left') ...
X_train = train_df.drop("Survived", axis=1) Y_train = train_df["Survived"] X_test = test_df.drop("PassengerId", axis=1 ).copy() X_train.shape, Y_train.shape, X_test.shape
Titanic - Machine Learning from Disaster
3,974,929
group = train_2.groupby(['date_block_num', 'shop_id','item_id'])['item_cnt_month'].quantile (.75) group.columns = ['date_shop_item_q75_item_cnt'] dfx=pd.DataFrame() dfx["date_shop_item_q75_item_cnt"]=group print(train_2.columns) train_2 = pd.merge(train_2, dfx, on=['date_block_num', 'shop_id','item_id'], how='left') ...
logreg = LogisticRegression() logreg.fit(X_train, Y_train) Y_pred1 = logreg.predict(X_test) acc_log = round(logreg.score(X_train, Y_train)* 100, 2) acc_log
Titanic - Machine Learning from Disaster
3,974,929
train_2['month'] = train_2['date_block_num'] % 12<correct_missing_values>
svc = SVC() svc.fit(X_train, Y_train) Y_pred2 = svc.predict(X_test) acc_svc = round(svc.score(X_train, Y_train)* 100, 2) acc_svc
Titanic - Machine Learning from Disaster
3,974,929
def fill_na(df): for col in df.columns: if('_lag_' in col)&(df[col].isnull().any()): if('item_cnt' in col): df[col].fillna(0, inplace=True) return df train_2 = fill_na(train_2 )<drop_column>
knn = KNeighborsClassifier(n_neighbors = 3) knn.fit(X_train, Y_train) Y_pred3 = knn.predict(X_test) acc_knn = round(knn.score(X_train, Y_train)* 100, 2) acc_knn
Titanic - Machine Learning from Disaster
3,974,929
final=train_2[[ 'date_block_num', 'shop_id', 'item_id', 'item_cnt_month', 'city_code', 'item_category_id', 'type_code', 'subtype_code', 'item_cnt_month_lag_1', 'item_cnt_month_lag_2', 'item_cnt_month_lag_3', 'item_cnt_month_lag_6', 'date_item_avg_item_cnt_lag_1', 'date_item_avg_item_cnt_lag_2', 'date_item_avg_item_cnt_...
gaussian = GaussianNB() gaussian.fit(X_train, Y_train) Y_pred4 = gaussian.predict(X_test) acc_gaussian = round(gaussian.score(X_train, Y_train)* 100, 2) acc_gaussian
Titanic - Machine Learning from Disaster
3,974,929
def One_way_ANOVA(df): lister12 = [] for col in df.columns: if df[col].dtype.kind not in 'bifc': model = ols('item_cnt_month ~'+col,data=df ).fit() table = sm.stats.anova_lm(model, typ=2) if table["PR(>F)"][0] < 0.05: lister12.append(col) return lister12<data_type_conversions>
perceptron = Perceptron() perceptron.fit(X_train, Y_train) Y_pred5 = perceptron.predict(X_test) acc_perceptron = round(perceptron.score(X_train, Y_train)* 100, 2) acc_perceptron
Titanic - Machine Learning from Disaster
3,974,929
train_check=train_2[(train_2.date_block_num<=5)] train_check['item_category_id_char']=train_check['item_category_id'].apply(str) train_check['type_code_char']=train_check['type_code'].apply(str) train_check['subtype_code_char']=train_check['subtype_code'].apply(str )<compute_test_metric>
linear_svc = LinearSVC() linear_svc.fit(X_train, Y_train) Y_pred6 = linear_svc.predict(X_test) acc_linear_svc = round(linear_svc.score(X_train, Y_train)* 100, 2) acc_linear_svc
Titanic - Machine Learning from Disaster
3,974,929
One_way_ANOVA(train_check[["city","shop_name","item_category_id_char","subtype_code_char","type_code_char","item_cnt_month"]] )<prepare_x_and_y>
sgd = SGDClassifier() sgd.fit(X_train, Y_train) Y_pred7 = sgd.predict(X_test) acc_sgd = round(sgd.score(X_train, Y_train)* 100, 2) acc_sgd
Titanic - Machine Learning from Disaster
3,974,929
final.rename(columns = {'item_cnt_month':'item_monthly_sum_x'}, inplace = True) final["item_monthly_sum_x"] = final["item_monthly_sum_x"] X_train = final[final.date_block_num < 33].drop(['item_monthly_sum_x'], axis=1) Y_train = final[final.date_block_num < 33]['item_monthly_sum_x'] X_valid = final[final.date_block_nu...
decision_tree = DecisionTreeClassifier() decision_tree.fit(X_train, Y_train) Y_pred8 = decision_tree.predict(X_test) acc_decision_tree = round(decision_tree.score(X_train, Y_train)* 100, 2) acc_decision_tree
Titanic - Machine Learning from Disaster
3,974,929
Y_test = model.predict(X_test) submission = pd.DataFrame({ "ID": test.ID, "item_cnt_month": Y_test.clip(0, 20) }) submission.to_csv('xgb_submission.csv', index=False) <load_from_csv>
random_forest = RandomForestClassifier(n_estimators=100) random_forest.fit(X_train, Y_train) Y_pred9 = random_forest.predict(X_test) random_forest.score(X_train, Y_train) acc_random_forest = round(random_forest.score(X_train, Y_train)* 100, 2) acc_random_forest
Titanic - Machine Learning from Disaster
3,974,929
PATH = 'competitive-data-science-predict-future-sales' items = pd.read_csv('.. /input/' + PATH + '/items.csv') shops = pd.read_csv('.. /input/' + PATH + '/shops.csv') cats = pd.read_csv('.. /input/' + PATH + '/item_categories.csv') train = pd.read_csv('.. /input/' + PATH + '/sales_train.csv') test = pd.read_csv('.....
models = pd.DataFrame({ 'Model': ['Support Vector Machines', 'KNN', 'Logistic Regression', 'Random Forest', 'Naive Bayes', 'Perceptron', 'Stochastic Gradient Decent', 'Linear SVC', 'Decision Tree'], 'Score': [acc_svc, acc_knn, acc_log, acc_random_forest, acc_gaussian, acc_perceptron, acc_sgd, acc_linear_svc, acc_decisi...
Titanic - Machine Learning from Disaster
3,974,929
print(train.isna().sum() , ' ') print(test.isna().sum() )<feature_engineering>
submission = pd.DataFrame({ "PassengerId": test_df["PassengerId"], "Survived": Y_pred9 }) submission.to_csv('submission_titanic.csv', index=False )
Titanic - Machine Learning from Disaster
11,353,301
train = train[train.item_price > 0].reset_index(drop=True) train[train.item_cnt_day <= 0].item_cnt_day.unique() train.loc[train.item_cnt_day < 1, 'item_cnt_day'] = 0<feature_engineering>
import pandas as pd import numpy as np import seaborn as sns import matplotlib.pyplot as plt
Titanic - Machine Learning from Disaster
11,353,301
train.loc[train.shop_id == 0, 'shop_id'] = 57 test.loc[test.shop_id == 0, 'shop_id'] = 57 train.loc[train.shop_id == 1, 'shop_id'] = 58 test.loc[test.shop_id == 1, 'shop_id'] = 58 train.loc[train.shop_id == 11, 'shop_id'] = 10 test.loc[test.shop_id == 11, 'shop_id'] = 10 train.loc[train.shop_id == 40, 'shop_id'] = 39 t...
train = pd.read_csv('.. /input/titanic/train.csv') test = pd.read_csv('.. /input/titanic/test.csv' )
Titanic - Machine Learning from Disaster
11,353,301
shops.loc[shops.shop_name == 'Сергиев Посад ТЦ "7Я"', 'shop_name'] = 'СергиевПосад ТЦ "7Я"' shops['city'] = shops['shop_name'].str.split(' ' ).map(lambda x: x[0]) shops['category'] = shops['shop_name'].str.split(' ' ).map(lambda x:x[1] ).astype(str) shops.loc[shops.city == '!Якутск', 'city'] = 'Якутск' category = ['О...
pd.pivot_table(train, index = 'Pclass', values = ['Survived'] )
Titanic - Machine Learning from Disaster