def main():
# Get label encoder
lb = LabelBinarizer()
lbenc = lb.fit(utils.get_classes())
# Get train data
X_train, y_train, train_filenames = utils.get_train(
'../input/train', list(lbenc.classes_), img_width, img_height)
# Create and train model
model = train(X_train, y_train, epochs=100, batch_size=32)
print("+++++++++++++++++++++++++++++++++++++++++++")
# Load model ...
#model = load_model('../models/'+ 'model2_f0.86/'+ 'model2-64-0.341.h5')
# Get test data
X_test, X_test_id = utils.get_test('../input/test', img_width, img_height)
# Predict on test data
preds = model.predict(X_test, verbose=1)
# Create submission
utils.create_submission(lbenc.inverse_transform(preds),
X_test_id,
output_path="../submissions/",
filename=modelname,
isSubmission=True)
utils.to_csv_ens(lbenc.inverse_transform(preds),
preds,
X_test_id,
utils.get_classes(),
output_path="../submissions/",
filename=modelname)
print('Finished.')
def main():
parser = build_parser()
options = parser.parse_args()
batch_size=options.batch_size
#train_names=utils.train_names
# train_set = utils.get_train()
# val_set = utils.val_n
model = Resnet()
model.cuda()
model = torch.nn.DataParallel(model)
###########################
#train_set,val_set = train_test_split(train_names, test_size=0.2, random_state=2050)
train_set,val_set=utils.get_split()
train_set = utils.get_train(train_set)
train_datasest=ProteinDataset(dirpath=utils.TRAIN,fnames=train_set)
train_loader = DataLoader(train_datasest, batch_size=batch_size, shuffle=True,num_workers=4)
val_dataset = ProteinDataset(dirpath=utils.TRAIN,fnames=val_set)
val_loader = DataLoader(val_dataset, batch_size=batch_size, shuffle=False, num_workers=4)
train(model, options.epochs, train_loader,val_loader,'sgdr_rgb.pkl')
def pca(data):
train = get_train(data).drop("cnt", axis=1)
test = get_holdout(data).drop("cnt", axis=1)
pca = daskpca(n_components=0.95, svd_solver="full").fit(train)
print("\tPerforming PCA dimensionality reduction...")
pca_train = dd.DataFrame(data=pca.transform(train))
pca_test = dd.DataFrame(data=pca.transform(test))
new_df = pca_train.append(pca_test)
new_df["cnt"] = data["cnt"]
return new_df
def weather_cluster(data):
"""
Creates a column that gives a cluster id based on KMeans clustering of only weather-related features
:param data: a pandas dataframe where each row is an hour
:return: a pandas dataframe containing the new column
"""
print("\tAdding clustering variable based on weather-related features...")
df = data.copy()[["weathersit", "temp", "atemp", "hum", "windspeed"]]
to_cluster = dd.get_dummies(df)
train = get_train(to_cluster)
holdout = get_holdout(to_cluster)
kmeans = KMeans(n_clusters=5,
random_state=SEED).fit(train) # magic numbers, blech
data["weather_cluster"] = da.append(kmeans.labels_,
kmeans.predict(holdout))
data["weather_cluster"] = data["weather_cluster"].astype("category")
return data
def cluster_variable(data):
"""
Creates a column that gives a cluster id based on KMeans clustering of all features
:param data: a pandas dataframe where each row is an hour
:return: a pandas dataframe containing the new column
"""
print("\tAdding cluster variable...")
data = data.copy()
to_cluster = dd.get_dummies(data)
train = get_train(to_cluster)
holdout = get_holdout(to_cluster)
kmeans = KMeans(n_clusters=5, random_state=SEED).fit(
train.drop("cnt", axis=1)) # magic numbers, blech
data["cluster"] = da.append(kmeans.labels_,
kmeans.predict(holdout.drop("cnt", axis=1)))
data["cluster"] = data["cluster"].astype("category")
return data
def subcount_forecast(data, feature):
"""
Creates a new a column that is the predicted value of the input feature
Essentially an abstraction for 'prediction_forecasts'
:param data: a pandas dataframe where each row is an hour
:param feature: a String containing the feature that should be forecasted (one of: casual, registered)
:return: a pandas dataframe containing the new column
"""
var_name = feature + "_forecast"
print("\tAdding {} variable...".format(var_name))
df = dd.get_dummies(data.copy().drop("cnt", axis=1))
to_predict = dd.read_csv(PATH)[feature]
df[feature] = to_predict
train = get_train(df)
model = RandomForestRegressor(random_state=SEED)
model_params = {"n_estimators": list(range(10, 110, 10))}
#tscv = TimeSeriesSplit(n_splits=5)
grid_search = GridSearchCV(estimator=model,
param_grid=model_params,
scoring="r2",
cv=None,
refit=True)
grid_search.fit(train.drop(feature, axis=1), train[feature])
print("\t\tPredictions for GridSearchCV on {}: {:.5f} +/- {:.5f}".format(
feature, grid_search.best_score_,
grid_search.cv_results_["std_test_score"][da.argmax(
grid_search.cv_results_["mean_test_score"])]))
data[var_name] = grid_search.best_estimator_.predict(
dd.get_dummies(data.drop("cnt", axis=1)))
return data
def summary(model,
sampling_method,
k_folds,
use_international,
cat_code,
data_dir,
results_dir,
verbose=True):
print("model: {} - sampling method: {}".format(model, sampling_method))
aggregate = {}
for k in range(k_folds):
result = pickle.load(
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method, k + 1)),
"rb"))
print("Fold {}".format(k + 1))
for key, val in result.items():
print(key)
print(val)
if key not in aggregate:
if type(val) is np.float32 or type(val) is np.float64 or type(
val) is float:
aggregate[key] = val
else:
if type(val) is np.float32 or type(val) is np.float64 or type(
val) is float:
aggregate[key] += val
aggregate = {key: val / k_folds for key, val in aggregate.items()}
print("Aggregate")
print(aggregate)
if model == 'logistic':
print("feature importance not implemented for logistic regression")
return
features, labels, feature_labels = get_train(
data_dir, one_hot=not cat_code, use_international=use_international)
country_names = get_country_names(data_dir)
if use_international:
country_names = country_names[:2].tolist() + ['international']
for k in range(k_folds):
print("Fold {}".format(k + 1))
correct_examples = pickle.load(
open(
os.path.join(
results_dir, "{}_{}_fold_{}_correct_examples.p".format(
model, sampling_method, k + 1)), "rb"))
incorrect_examples = pickle.load(
open(
os.path.join(
results_dir, "{}_{}_fold_{}_incorrect_examples.p".format(
model, sampling_method, k + 1)), "rb"))
feature_imp = pickle.load(
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "rb"))
top_20 = [
(label, feature_imp[label])
for label in sorted(feature_imp, key=feature_imp.get, reverse=True)
][:20]
print(top_20)
print("correct examples\n")
for example in correct_examples:
print("{} features\n".format(country_names[example['label']]))
feature_dict = {
label: feature
for label, feature in zip(feature_labels, example['features'])
}
for label, weight in top_20:
print("{},{}".format(label, feature_dict[label]))
print("")
print("\nincorrect examples\n")
for example in incorrect_examples:
print("{} features".format(country_names[example['label']]))
print("prediction was {}\n".format(
country_names[example['prediction']]))
feature_dict = {
label: feature
for label, feature in zip(feature_labels, example['features'])
}
for label, weight in top_20:
print("{},{}".format(label, feature_dict[label]))
print("")
def train(sampling_method, k_folds, data_dir, results_dir, device='cpu', use_international=False, verbose=True):
model = 'lgbm'
start_time = time.time()
if verbose:
print("Using device: {}".format(device))
print("Reading train data in...")
if use_international:
print("Using international class.")
X_train, Y_train, feature_labels = get_train(data_dir, one_hot=False, use_international=use_international)
categorical_feature = ['age_bucket', 'gender', 'signup_method', 'signup_flow', 'language',
'affiliate_channel', 'affiliate_provider', 'first_affiliate_tracked',
'signup_app', 'first_device_type', 'first_browser']
if verbose:
print("Successfully loaded data")
print("Starting Cross-Validation with {} folds...".format(k_folds))
kf = KFold(n_splits=k_folds)
kf.get_n_splits(X_train)
params = {
'task': 'train',
'objective': 'multiclass',
'num_class': 12,
'num_leaves': 31,
'lambda_l2': 0.1,
'learning_rate': 0.3,
'feature_fraction': 0.9,
'min_child_weight': 1.0,
'device': device,
'gpu_device_id': 0,
'gpu_platform_id': 0,
'max_bin': 63,
'verbose': 0
}
if use_international:
params['objective'] = 'binary'
del params["num_class"]
for k, (train_index, test_index) in enumerate(kf.split(X_train)):
print("Processing Fold {} out of {}".format(k+1, k_folds))
X_trainCV, X_testCV = X_train[train_index], X_train[test_index]
Y_trainCV, Y_testCV = Y_train[train_index], Y_train[test_index]
if verbose:
print("{} sampling process started...".format(sampling_method))
curr_time = time.time()
if sampling_method == "adasyn":
X_train_resampled, Y_train_resampled = ADASYN().fit_sample(X_trainCV, Y_trainCV)
elif sampling_method == "smote":
X_train_resampled, Y_train_resampled = SMOTE().fit_sample(X_trainCV, Y_trainCV)
elif sampling_method == "random":
X_train_resampled, Y_train_resampled = RandomOverSampler().fit_sample(X_trainCV, Y_trainCV)
elif sampling_method == "smoteenn":
X_train_resampled, Y_train_resampled = SMOTEENN().fit_sample(X_trainCV, Y_trainCV)
else:
X_train_resampled, Y_train_resampled = X_trainCV, Y_trainCV
if verbose:
print("Oversampling completed")
print("Time Taken: {:.2f}".format(time.time()-curr_time))
print("Size of Oversampled data: {}".format(X_train_resampled.shape))
print("{} model(s) selected for classification".format(model))
curr_time = time.time()
lgb_train = lgb.Dataset(data=X_train_resampled, label=Y_train_resampled,
feature_name=feature_labels, categorical_feature=categorical_feature)
clf = lgb.train(params, lgb_train, num_boost_round=30)
print("Time taken: {:.2f}".format(time.time()-curr_time))
Y_probs = clf.predict(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importance(importance_type='gain')
feature_imp = {label: imp for label, imp in zip(feature_labels, feature_imp)}
pickle.dump(feature_imp, open(os.path.join(results_dir, "{}_{}_feature_imp_fold_{}.p".format(model, sampling_method, k+1)), "wb" ))
pickle.dump(result, open(os.path.join(results_dir, "{}_{}_fold_{}.p".format(model, sampling_method, k+1)), "wb" ))
save_examples(X_testCV, Y_testCV, Y_probs, model, sampling_method, k+1, save_dir=results_dir)
print("Training took {:.2f}s.".format(time.time()-start_time))
print("Finished.")
def submission(model,
sampling_method,
data_dir,
results_dir,
device='cpu',
verbose=True):
if verbose:
print("Using device: {}".format(device))
print("Reading train data in...")
if model == 'lgbm':
X_train, Y_train, feature_labels = get_train(data_dir, one_hot=False)
else:
X_train, Y_train, feature_labels = get_train(data_dir)
X_test = get_test(data_dir)
train_ids, test_ids = get_ids(data_dir)
country_names = get_country_names(data_dir)
if verbose:
print("Successfully loaded data")
lgbm_params = {
'task': 'train',
'objective': 'multiclass',
'num_class': 12,
'num_leaves': 31,
'learning_rate': 0.3,
'lambda_l2': 1.0,
'feature_fraction': 0.9,
'min_child_weight': 1.0,
'device': device,
'gpu_device_id': 0,
'gpu_platform_id': 0,
'max_bin': 63,
'verbose': 0
}
if device == 'cpu':
xgb_params = {
"objective": "multi:softprob",
"num_class": 12,
"tree_method": "hist",
"colsample_bytree": 0.9,
"n_jobs": 2,
"silent": 1
}
else:
xgb_params = {
"objective": "multi:softprob",
"num_class": 12,
"tree_method": "gpu_hist",
"colsample_bytree": 0.9,
"gpu_id": 0,
"max_bin": 16,
"silent": 1
}
if verbose:
print("{} sampling process started...".format(sampling_method))
curr_time = time.time()
if sampling_method == "adasyn":
X_train_resampled, Y_train_resampled = ADASYN().fit_sample(
X_train, Y_train)
elif sampling_method == "smote":
X_train_resampled, Y_train_resampled = SMOTE().fit_sample(
X_train, Y_train)
elif sampling_method == "random":
X_train_resampled, Y_train_resampled = RandomOverSampler().fit_sample(
X_train, Y_train)
elif sampling_method == "smoteenn":
X_train_resampled, Y_train_resampled = SMOTEENN().fit_sample(
X_train, Y_train)
else:
X_train_resampled, Y_train_resampled = X_train, Y_train
if verbose:
print("Oversampling completed")
print("Time Taken: {:.2f}".format(time.time() - curr_time))
print("Size of Oversampled data: {}".format(X_train_resampled.shape))
print("{} selected for classification".format(model))
curr_time = time.time()
if model == 'lgbm':
categorical_feature = [
'age_bucket', 'gender', 'signup_method', 'signup_flow', 'language',
'affiliate_channel', 'affiliate_provider',
'first_affiliate_tracked', 'signup_app', 'first_device_type',
'first_browser'
]
lgb_train = lgb.Dataset(data=X_train_resampled,
label=Y_train_resampled,
feature_name=feature_labels,
categorical_feature=categorical_feature)
clf = lgb.train(lgbm_params, lgb_train, num_boost_round=30)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict(X_test)
order = np.argsort(-Y_probs[:, :5], axis=1)
else:
X_train_xgb = xgb.DMatrix(X_train_resampled,
Y_train_resampled,
feature_names=feature_labels)
X_test_xgb = xgb.DMatrix(X_test, feature_names=feature_labels)
clf = xgb.train(xgb_params, X_train_xgb, 30)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict(X_test_xgb)
order = np.argsort(-Y_probs[:, :5], axis=1)
print("Generating submission csv...")
with open(os.path.join(results_dir, 'submission_{}.csv'.format(model)),
'w') as f:
writer = csv.writer(f, delimiter=',', quoting=csv.QUOTE_MINIMAL)
writer.writerow(['id', 'country'])
for i in range(len(test_ids)):
for k in range(5):
writer.writerow([test_ids[i], country_names[order[i, k]]])
print("Finished.")
""" This file get preprocessed data """ from keras.preprocessing.text import Tokenizer from keras.preprocessing.sequence import pad_sequences from keras.utils import to_categorical from sklearn.model_selection import train_test_split from tqdm import tqdm from utils import load_glove, clean_str, get_train import pandas as pd import numpy as np import re # get input train_df = get_train() texts = train_df['text'].to_list() tags = train_df['tag'].to_list() # clean the text train_df['text'] = train_df['text'].apply(clean_str) # text2sequence emb_size = 300 max_features = 6000 maxlen = 50 tokenizer = Tokenizer(num_words=max_features) tokenizer.fit_on_texts(texts) word_index = tokenizer.word_index sequences = tokenizer.texts_to_sequences(texts)
def train(model,
sampling_method,
k_folds,
data_dir,
results_dir,
device='cpu',
use_international=False,
verbose=True):
start_time = time.time()
if verbose:
print("Using device: {}".format(device))
print("Reading train data in...")
if use_international:
print("Using international class.")
X_train, Y_train, feature_labels = get_train(
data_dir, use_international=use_international)
if verbose:
print("Successfully loaded data")
print("Starting Cross-Validation with {} folds...".format(k_folds))
kf = KFold(n_splits=k_folds)
kf.get_n_splits(X_train)
lgbm_params = {
'task': 'train',
'objective': 'multiclass',
'num_class': 12,
'num_leaves': 31,
'learning_rate': 0.1,
'lambda_l2': 1.0,
'feature_fraction': 0.9,
'min_child_weight': 1.0,
'device': device,
'gpu_device_id': 0,
'gpu_platform_id': 0,
'max_bin': 63,
'verbose': 0
}
if use_international:
lgbm_params['objective'] = 'binary'
del lgbm_params["num_class"]
if device == 'cpu':
xgb_params = {
"objective": "multi:softprob",
"num_class": 12,
"tree_method": "hist",
"colsample_bytree": 0.9,
"n_jobs": 2,
"silent": 1
}
else:
xgb_params = {
"objective": "multi:softprob",
"num_class": 12,
"tree_method": "gpu_hist",
"colsample_bytree": 0.9,
"gpu_id": 0,
"max_bin": 16,
"silent": 1
}
if use_international:
xgb_params["objective"] = "binary:logistic"
del xgb_params["num_class"]
for k, (train_index, test_index) in enumerate(kf.split(X_train)):
print("Processing Fold {} out of {}".format(k + 1, k_folds))
X_trainCV, X_testCV = X_train[train_index], X_train[test_index]
Y_trainCV, Y_testCV = Y_train[train_index], Y_train[test_index]
if verbose:
print("{} sampling process started...".format(sampling_method))
curr_time = time.time()
if sampling_method == "adasyn":
X_train_resampled, Y_train_resampled = ADASYN().fit_sample(
X_trainCV, Y_trainCV)
elif sampling_method == "smote":
X_train_resampled, Y_train_resampled = SMOTE().fit_sample(
X_trainCV, Y_trainCV)
elif sampling_method == "random":
X_train_resampled, Y_train_resampled = RandomOverSampler(
).fit_sample(X_trainCV, Y_trainCV)
elif sampling_method == "smoteenn":
X_train_resampled, Y_train_resampled = SMOTEENN().fit_sample(
X_trainCV, Y_trainCV)
else:
X_train_resampled, Y_train_resampled = X_trainCV, Y_trainCV
if verbose:
print("Oversampling completed")
print("Time Taken: {:.2f}".format(time.time() - curr_time))
print("Size of Oversampled data: {}".format(
X_train_resampled.shape))
print("{} model(s) selected for classification".format(model))
curr_time = time.time()
if model == "tree":
clf = DecisionTreeClassifier().fit(X_train_resampled,
Y_train_resampled)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
elif model == "logistic":
clf = LogisticRegression(penalty="l2",
C=1).fit(X_train_resampled,
Y_train_resampled)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
assert (np.all(
np.argmax(Y_probs, axis=1) == clf.predict(X_testCV)))
result = evaluate(Y_testCV, Y_probs)
print(result)
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
elif model == "xgb":
X_train_xgb = xgb.DMatrix(X_train_resampled,
Y_train_resampled,
feature_names=feature_labels)
X_test_xgb = xgb.DMatrix(X_testCV, feature_names=feature_labels)
clf = xgb.train(xgb_params, X_train_xgb, 30)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict(X_test_xgb)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.get_score(importance_type='gain')
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
elif model == "lgbm":
lgb_train = lgb.Dataset(data=X_train_resampled,
label=Y_train_resampled,
feature_name=feature_labels)
clf = lgb.train(lgbm_params, lgb_train, num_boost_round=30)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importance(importance_type='gain')
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
elif model == "ada":
clf = AdaBoostClassifier(n_estimators=30).fit(
X_train_resampled, Y_train_resampled)
print("Time taken for {}: {:.2f}".format(model,
time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
elif model == "forest":
clf = RandomForestClassifier(n_estimators=30,
n_jobs=2).fit(X_train_resampled,
Y_train_resampled)
print("Time taken: {:.2f}".format(time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir, "{}_{}_feature_imp_fold_{}.p".format(
model, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir,
"{}_{}_fold_{}.p".format(model, sampling_method,
k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
model,
sampling_method,
k + 1,
save_dir=results_dir)
else:
models = [
"lgbm", "xgb", "ada", "forest", "tree", "logistic"
] # for category codes instead of one hot, use lgbm_train.py
for m in models:
print("Training {}...".format(m))
curr_time = time.time()
if m == "xgb":
X_train_xgb = xgb.DMatrix(X_train_resampled,
Y_train_resampled,
feature_names=feature_labels)
X_test_xgb = xgb.DMatrix(X_testCV,
feature_names=feature_labels)
clf = xgb.train(xgb_params, X_train_xgb, 30)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict(X_test_xgb)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.get_score(importance_type='gain')
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir,
"{}_{}_feature_imp_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
elif m == "lgbm":
lgb_train = lgb.Dataset(data=X_train_resampled,
label=Y_train_resampled,
feature_name=feature_labels)
clf = lgb.train(lgbm_params, lgb_train, num_boost_round=30)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importance(
importance_type='gain')
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir,
"{}_{}_feature_imp_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
elif m == "ada":
clf = AdaBoostClassifier(n_estimators=30).fit(
X_train_resampled, Y_train_resampled)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir,
"{}_{}_feature_imp_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
elif m == "forest":
clf = RandomForestClassifier(n_estimators=30,
n_jobs=2).fit(
X_train_resampled,
Y_train_resampled)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir,
"{}_{}_feature_imp_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
elif m == "tree":
clf = DecisionTreeClassifier(min_samples_split=2,
min_samples_leaf=5).fit(
X_train_resampled,
Y_train_resampled)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
feature_imp = clf.feature_importances_
feature_imp = {
label: imp
for label, imp in zip(feature_labels, feature_imp)
}
pickle.dump(
feature_imp,
open(
os.path.join(
results_dir,
"{}_{}_feature_imp_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
else:
clf = LogisticRegression(penalty="l2").fit(
X_train_resampled, Y_train_resampled)
print("Time taken for {}: {:.2f}".format(
m,
time.time() - curr_time))
Y_probs = clf.predict_proba(X_testCV)
result = evaluate(Y_testCV, Y_probs)
print(result)
pickle.dump(
result,
open(
os.path.join(
results_dir, "{}_{}_fold_{}.p".format(
m, sampling_method, k + 1)), "wb"))
save_examples(X_testCV,
Y_testCV,
Y_probs,
m,
sampling_method,
k + 1,
save_dir=results_dir)
print("Training took {:.2f}s.".format(time.time() - start_time))
print("Finished.")
device = torch.device('cuda')
os.environ['CUDA_VISIBLE_DEVICES'] = "0,1,2,3"
# hyperparameters
FILE_PATH = "training file.txt"
MAX_SEQUENCE_LENGTH = 75
TRAIN_SIZE = 6500
SEED = 666
EPOCHS = 5
LR = 2e-5
BATCH_SIZE = 32
ACCUMULATION_STEPS = 2 # how many steps it should backward propagate before optimization
OUTPUT_FILE_NAME = "bert_pytorch.bin"
# convert the origin data into a formatted pandas dataframe
train_df = get_train(FILE_PATH)
train_df['text'] = train_df['text'].apply(clean_str)
#convert tag to sequence, maybe there are more elegant way to do this
tags = train_df['tag'].to_list()
tokenizer_tag = Tokenizer()
tokenizer_tag.fit_on_texts(tags)
tags = tokenizer_tag.texts_to_sequences(tags)
tags = np.array(list((map(lambda x: x[0], tags))))
# convert text to bert format sequence
tokenizer = BertTokenizer.from_pretrained('bert-base-uncased')
sequences = convert_lines(train_df["text"].fillna("DUMMY_VALUE"),
MAX_SEQUENCE_LENGTH, tokenizer)
#shuffle the data
# -*- coding: utf-8 -*-
"""
Created on Sun Feb 14 16:59:19 2021
@author: clara
"""
import utils
label = 0
# parameters of the classifier
SVMparams = [0.006, 0.005]
methods = ['KS_7']
Xtr, ytr = utils.get_train(label)
utils.grid_search(label, Xtr, ytr,
SVMparams, methods,
train_size=0.75, graph=False)
