def deserialize_gradient_boosting(model_dict):
model = GradientBoostingClassifier(**model_dict['params'])
estimators = [
regression.deserialize_decision_tree_regressor(tree)
for tree in model_dict['estimators_']
]
model.estimators_ = np.array(estimators).reshape(
model_dict['estimators_shape'])
if 'init_' in model_dict and model_dict['init_']['meta'] == 'dummy':
model.init_ = dummy.DummyClassifier()
model.init_.__dict__ = model_dict['init_']
model.init_.__dict__.pop('meta')
model.classes_ = np.array(model_dict['classes_'])
model.train_score_ = np.array(model_dict['train_score_'])
model.max_features_ = model_dict['max_features_']
model.n_classes_ = model_dict['n_classes_']
model.n_features_ = model_dict['n_features_']
if model_dict['loss_'] == 'deviance':
model.loss_ = _gb_losses.BinomialDeviance(model.n_classes_)
elif model_dict['loss_'] == 'exponential':
model.loss_ = _gb_losses.ExponentialLoss(model.n_classes_)
elif model_dict['loss_'] == 'multinomial':
model.loss_ = _gb_losses.MultinomialDeviance(model.n_classes_)
if 'priors' in model_dict:
model.init_.priors = np.array(model_dict['priors'])
return model
def getF1_SAF_allrows(allEntries):
y_pred = {}
for algo in ALGOS:
algoStr = str(algo).split('.')[1].upper()
y_pred[algoStr] = []
y_pred[algoStr].append([])
y_pred[algoStr].append([])
y_actual = []
print(len(allEntries))
threshold_sets = {
'St_c_DS':
getThreshold(THRESHOLD_SETS.HUMANCLONE_QUART3, DB_SETS.GT10_DB_DATA,
'all'),
'St_n_DS':
getThreshold(THRESHOLD_SETS.HUMANND_MEDIAN, DB_SETS.GT10_DB_DATA,
'all'),
'O_s_DS':
getThreshold(THRESHOLD_SETS.OPTIMAL, DB_SETS.GT10_DB_DATA, 'all'),
'O_c_DS':
getThreshold(THRESHOLD_SETS.OPTIMAL_CLASSIFICATION_CLONE,
DB_SETS.GT10_DB_DATA, 'all'),
'O_n_DS':
getThreshold(THRESHOLD_SETS.OPTIMAL_CLASSIFICATION_ND,
DB_SETS.GT10_DB_DATA, 'all')
}
# threshold_sets["proportion_based"] = [getThreshold(THRESHOLD_SETS.FULLDB_QUART1, DB_SETS.GT10_DB_DATA, 'all'), getThreshold(THRESHOLD_SETS.FULLDB_MEDIAN, DB_SETS.GT10_DB_DATA, 'all')]
# threshold_sets["sample_based"] = [getThreshold(THRESHOLD_SETS.HUMANCLONE_QUART3, DB_SETS.GT10_DB_DATA, 'all'), getThreshold(THRESHOLD_SETS.HUMANND_MEDIAN.FULLDB_MEDIAN, DB_SETS.GT10_DB_DATA, 'all')]
algoScoreRows = []
fieldNames = [
'thresholdSet', 'algoName', 'threshold', 'precision', 'recall', 'f1'
]
dummyClassifier = dummy.DummyClassifier(strategy="stratified")
print(threshold_sets)
for threshold_set_name in threshold_sets:
threshold_set = threshold_sets[threshold_set_name]
for algo in ALGOS:
algoStr = str(algo).split('.')[1].upper()
threshold = threshold_set[algoStr]
precision, recall, f1 = getF1_SAF(threshold, allEntries, algoStr)
algoScoreRows.append({
'thresholdSet': threshold_set_name,
'algoName': algoStr,
'threshold': threshold,
'precision': precision,
'recall': recall,
'f1': f1
})
writeCSV(fieldNames, algoScoreRows,
"rq2_1_" + str(datetime.now().strftime("%Y%m%d-%H%M%S")) + ".csv")
def fit_baseline(self, x, y):
'''
Fit the baseline for the MetaEstimator. That is, depending on the loss function, determine
the optimal constant predictor, based on the training data on the output
'''
# Determine if regression or classification problem
if self.method_type is None:
is_above = len(np.unique(y, axis=0)) > self.cutoff_categorical
self.method_type = ('classif','regr')[is_above]
# Fit a Dummy (constant) estimator
if self.method_type == 'regr':
self.fitted = dummy.DummyRegressor().fit(x, y)
else:
self.fitted = dummy.DummyClassifier().fit(x, y)
self.classes = dummy.DummyClassifier().fit(x, y).classes_
def build_model(model_type, num_targets=1):
if model_type == 'gradient_boosting':
base = ensemble.GradientBoostingClassifier(n_estimators=100,
verbose=True)
elif model_type == 'random_forest':
base = ensemble.RandomForestClassifier()
elif model_type == 'dummy_stratified':
base = dummy.DummyClassifier('stratified')
elif model_type == 'dummy_most_frequent':
base = dummy.DummyClassifier('most_frequent')
else:
raise (ValueError('invalid model type: {}'.format(model_type)))
# multiple outputs in the dataset => fit a separate regressor to each
if num_targets > 1:
return multioutput.MultiOutputClassifier(base)
else:
return base
def build_sklearn(self, model_id, model_params):
"""Method that builds models implemented in sklearn"""
if model_id == 'sklearn_LogisticRegressionCV':
return linear_model.LogisticRegressionCV(**model_params)
if model_id == 'sklearn_LogisticRegression':
return linear_model.LogisticRegression(**model_params)
elif model_id == 'sklearn_MLPClassifier':
return neural_network.MLPClassifier(**model_params)
elif model_id == 'sklearn_GaussianNB':
return naive_bayes.GaussianNB(**model_params)
elif model_id == 'sklearn_MultinomialNB':
return naive_bayes.MultinomialNB(**model_params)
elif model_id == 'sklearn_BernoulliNB':
return naive_bayes.BernoulliNB(**model_params)
elif model_id == 'sklearn_RandomForestClassifier':
return ensemble.RandomForestClassifier(**model_params)
elif model_id == 'sklearn_SVC':
return svm.SVC(**model_params)
elif model_id == 'sklearn_AdaBoostClassifier':
return ensemble.AdaBoostClassifier(**model_params)
elif model_id == 'sklearn_SGDClassifier':
return linear_model.SGDClassifier(**model_params)
elif model_id == 'sklearn_PassiveAggressiveClassifier':
return linear_model.PassiveAggressiveClassifier(**model_params)
elif model_id == 'sklearn_RidgeClassifier':
return linear_model.RidgeClassifier(**model_params)
elif model_id == 'sklearn_DummyClassifier':
return dummy.DummyClassifier(**model_params)
elif model_id == 'sklearn_KNeighborsClassifier':
return neighbors.KNeighborsClassifier(**model_params)
elif model_id == 'sklearn_DecisionTreeClassifier':
return tree.DecisionTreeClassifier(**model_params)
elif model_id == 'sklearn_LinearRegression':
return linear_model.LinearRegression(**model_params)
elif model_id == 'sklearn_LassoCV':
return linear_model.LassoCV(**model_params)
elif model_id == 'sklearn_RidgeCV':
return linear_model.RidgeCV(**model_params)
elif model_id == 'sklearn_Ridge':
return linear_model.Ridge(**model_params)
elif model_id == 'sklearn_DummyRegressor':
return dummy.DummyRegressor(**model_params)
elif model_id == 'sklearn_RandomForestRegressor':
return ensemble.RandomForestRegressor(**model_params)
elif model_id == 'sklearn_GradientBoostingRegressor':
return ensemble.GradientBoostingRegressor(**model_params)
elif model_id == 'sklearn_MLPRegressor':
return neural_network.MLPRegressor(**model_params)
elif model_id == 'sklearn_KNeighborsRegressor':
return neighbors.KNeighborsRegressor(**model_params)
elif model_id == 'sklearn_SVR':
return svm.SVR(**model_params)
elif model_id == 'sklearn_SGDRegressor':
return linear_model.SGDRegressor(**model_params)
elif model_id == 'sklearn_DecisionTreeRegressor':
return tree.DecisionTreeRegressor(**model_params)
return None
def train(excel_file, text_column, labels_column, train_test_idxs_file, n_jobs, model_file, n_accepted_probs, output_file):
execution_info = pd.DataFrame()
execution_info['Start date'] = [get_local_time_str()]
torch.manual_seed(RANDOM_STATE)
device = torch.device(f'cuda:{torch.cuda.current_device()}' \
if torch.cuda.is_available() \
else 'cpu')
device_str = f'{device.type}:{device.index} ({torch.cuda.get_device_name(device.index)})' \
if device.type == 'cuda' \
else device.type
print(f'Device: {device_str}')
df = pd.read_excel(excel_file)
df = df.fillna('NaN')
corpus = df[text_column].tolist()
labels = df[labels_column].tolist()
train_test_idxs = load_json(train_test_idxs_file)
train_idxs = train_test_idxs['train_idxs']
test_idxs = train_test_idxs['test_idxs']
corpus_train = utils.safe_indexing(corpus, train_idxs)
corpus_test = utils.safe_indexing(corpus, test_idxs)
y_train = utils.safe_indexing(labels, train_idxs)
y_test = utils.safe_indexing(labels, test_idxs)
train_set = BERTTokenizedDataset(corpus_train, y_train)
val_set = BERTTokenizedDataset(corpus_test, y_test)
train_loader = DataLoader(train_set, batch_size=BATCH_SIZE, num_workers=n_jobs-1)
val_loader = DataLoader(val_set, batch_size=BATCH_SIZE, num_workers=n_jobs-1)
assert train_loader.dataset.classes_ == val_loader.dataset.classes_
net = BERTNeuralNet(len(val_loader.dataset.classes_), freeze_bert=FREEZE_BERT)
net.load_state_dict(torch.load(model_file, map_location=device)['model_state_dict'])
net.additional_layers = nn.Sequential(*list(net.additional_layers.children())[0:-1])
ft = FeatureExtractor(device, net)
X_train = ft.extract_features(train_loader, 'X_train.pkl', 'X_train.dat')
X_test = ft.extract_features(val_loader, 'X_test.pkl', 'X_test.dat')
clfs = [
ensemble.RandomForestClassifier(n_estimators=100, n_jobs=n_jobs, random_state=RANDOM_STATE),
LinearSVC(random_state=RANDOM_STATE),
dummy.DummyClassifier(strategy='stratified', random_state=RANDOM_STATE, constant=None),
linear_model.SGDClassifier(loss='modified_huber', max_iter=1000, tol=1e-3, n_jobs=n_jobs, random_state=RANDOM_STATE)
]
predictions = {'y_true': y_test}
for clf in tqdm(iterable=clfs, desc='Fitting classifiers', unit='clf'):
clf.fit(X_train, y_train)
dump_pickle(clf, '%s.pkl' % (clf.__class__.__name__))
for clf in tqdm(iterable=clfs, desc='Obtaining probabilities', unit='clf'):
y_predict_proba = clf.predict_proba(X_test)
dicts = predict_proba_to_dicts(clf.classes_, y_predict_proba)
predictions[clf.__class__.__name__] = dicts
dump_json(predictions, 'predictions.json')
execution_info['End date'] = [get_local_time_str()]
execution_info['Excel file'] = [excel_file]
execution_info['Text column'] = [text_column]
execution_info['Label column'] = [labels_column]
execution_info['Accepted probabilities'] = [n_accepted_probs]
execution_info['Device'] = [device_str]
execution_info['Base model'] = [model_file]
execution_info['Batch size'] = [BATCH_SIZE]
generate_report(execution_info, predictions, output_file)
def train(self):
"""
Train the family level classifiers
"""
print("Training ARO classifiers for each family")
family_level_classifiers = {}
for family in tqdm(self.card.gene_family_to_aro.keys()):
family_name = family.replace(' ', '_').replace('/', '_')
# get all the aros relevant to the family
family_aros = self.card.gene_family_to_aro[family]
# filter input to just the columns containing similarity to aros
# within the family
X_train = self.X[family_aros]
# get the indices where the label is one of the AROs belonging to
# the current family
label_indices = [
ix for ix, x in enumerate(self.y) if x in family_aros
]
y_train = np.array(self.y)[label_indices]
# grab only the reads where the label index is an ARO belonging to the
# current family being trained
X_train = X_train.iloc[label_indices]
if os.path.exists('models/{}.pkl'.format(family_name)):
family_clf = joblib.load('models/{}.pkl'.format(family_name))
family_level_classifiers.update(
{family: [family_clf, family_aros]})
continue
# i.e. if family only has a single member
if len(family_aros) == 1:
family_clf = dummy.DummyClassifier(strategy='constant',
constant=family_aros[0])
family_clf.fit(X_train, y_train)
joblib.dump(family_clf, 'models/{}.pkl'.format(family_name))
family_level_classifiers.update(
{family: [family_clf, family_aros]})
else:
# rebalance using SMOTE
X_resampled, y_resampled = SMOTE(
kind='borderline1').fit_sample(X_train, y_train)
family_clf = ensemble.RandomForestClassifier()
family_clf.fit(X_resampled, y_resampled)
joblib.dump(family_clf, 'models/{}.pkl'.format(family_name))
family_level_classifiers.update(
{family: [family_clf, family_aros]})
self.family_level_classifiers = family_level_classifiers
def __init__(self,
use_stacked_prob=False,
stacked_classifier="decision_tree",
estimators_to_remove=[],
include_original_input=False):
"""Setup a SuperLearner classifier"""
self.decision_tree = tree.DecisionTreeClassifier(criterion="entropy",
max_depth=7,
min_samples_split=11)
self.random_forest = ensemble.RandomForestClassifier(
n_estimators=500, max_features=4) #change_max_features
self.bagging = ensemble.BaggingClassifier(
base_estimator=tree.DecisionTreeClassifier(criterion="entropy"),
n_estimators=10)
self.logistic_model = linear_model.LogisticRegression(
multi_class='auto')
self.k_nearest_neighbours = neighbors.KNeighborsClassifier(
n_neighbors=5)
self.linear_svc = svm.SVC(kernel="linear", C=1.0, probability=True)
self.include_original_input = include_original_input
self.use_stacked_prob = use_stacked_prob
self.estimators = {
"decision_tree": self.decision_tree,
"random_forest": self.random_forest,
"bagging": self.bagging,
"logistic_regression": self.logistic_model,
"k_nearest_neighbours": self.k_nearest_neighbours,
"linear_svc": self.linear_svc
}
#can use any subset of the availabe estimators
self.estimators = {
key: value
for key, value in self.estimators.items()
if key not in estimators_to_remove
}
#stacked layer classifier
if stacked_classifier == "decision_tree" or stacked_classifier == None:
self.Z_classifier = tree.DecisionTreeClassifier(
criterion="entropy")
elif stacked_classifier == "logistic_regression":
self.Z_classifier = linear_model.LogisticRegression()
elif stacked_classifier == "k_nearest_neighbours":
self.Z_classifier = neighbors.KNeighborsClassifier(n_neighbors=5)
elif stacked_classifier == "random_forest":
self.Z_classifier = ensemble.RandomForestClassifier(
n_estimators=500)
elif stacked_classifier == "most_frequent":
self.Z_classifier = dummy.DummyClassifier(strategy="most_frequent")
else:
raise ValueError(
'Error: Not known classifier for stacked layer classifier, check spelling'
)
def zr(data_for_algos):
model = dummy.DummyClassifier(strategy="most_frequent")
X = np.asarray(list(map(lambda row: row[:-1], data_for_algos)))
y = np.asarray(list(map(lambda row: row[-1], data_for_algos)))
X_train, X_test, y_train, y_test = train_test_split(X,
y,
test_size=0.2,
random_state=0)
model.fit(X_train, y_train)
return model, model.score(X_test, y_test)
def baseline(data):
strategies = ['stratified', 'most_frequent', 'prior', 'uniform']
baseDict = {}
X, y, features = data.get_data(target=data.default_target_attribute,
return_attribute_names=True)
X_train, X_test, y_train, y_test = train_test_split(X, y, random_state=0)
for strat in strategies:
clf = dummy.DummyClassifier(strategy=strat, random_state=0)
clf.fit(X_train, y_train)
baseDict[strat] = clf.score(X_test, y_test)
return baseDict
def calculate_classification_metrics(data, features):
if len(features) == 0:
clsfr = dummy.DummyClassifier(strategy="most_frequent")
else:
clsfr = linear_model.LogisticRegression()
data_permutation = generate_permutation(len(data["class_label"]))
# prepare data for classification
X, y, race = generate_X_y_for_feature_set(data, features)
# splitting data into train and test and preparing vector for calculating disparate mistreatment
y = y[data_permutation]
X = X[data_permutation]
race = race[data_permutation]
total_entries = len(y)
cut_index = int(total_entries / 2.0)
X_train, X_test = X[:cut_index], X[cut_index:]
y_train, y_test = y[:cut_index], y[cut_index:]
race_train, race_test = race[:cut_index], race[cut_index:]
# calculating accuracy, disparate mistreatment and auc
clsfr.fit(X_train, y_train)
results = dict()
predicted_labels = clsfr.predict(X_test)
results["predicted_labels"] = predicted_labels
results["accuracy"] = sum(y_test == predicted_labels) / len(y_test)
results["auc"] = roc_auc_score(y_test, predicted_labels)
# disparate mistreatment, calculating false positives and false negatives for Caucasian and non-Caucasian
results["fp_C"] = sum(
np.logical_and(predicted_labels == 1,
np.logical_and(race_test == 1, y_test == -1))) / max(
sum(np.logical_and(race_test == 1, y_test == -1)),
1)
results["fn_C"] = sum(
np.logical_and(predicted_labels == -1,
np.logical_and(race_test == 1, y_test == 1))) / max(
sum(np.logical_and(race_test == 1, y_test == 1)), 1)
results["fp_nC"] = sum(
np.logical_and(predicted_labels == 1,
np.logical_and(race_test == 0, y_test == -1))) / max(
sum(np.logical_and(race_test == 0, y_test == -1)),
1)
results["fn_nC"] = sum(
np.logical_and(predicted_labels == -1,
np.logical_and(race_test == 0, y_test == 1))) / max(
sum(np.logical_and(race_test == 0, y_test == 1)), 1)
results["disparate_mistreatment"] = abs(
results["fp_C"] - results["fp_nC"]) + abs(results["fn_C"] -
results["fn_nC"])
return results
def train(excel_file, text_column, labels_column, train_test_idxs_file, n_jobs,
n_accepted_probs, output_file):
execution_info = pd.DataFrame()
execution_info['Start date'] = [get_local_time_str()]
df = pd.read_excel(excel_file)
df = df.fillna('NaN')
preprocessor = Preprocessor()
corpus = preprocessor.preprocess(df[text_column])
dump_json(corpus, 'preprocessed_corpus_ELMo.json')
labels = df[labels_column].tolist()
train_test_idxs = load_json(train_test_idxs_file)
train_idxs = train_test_idxs['train_idxs']
test_idxs = train_test_idxs['test_idxs']
corpus_train = utils.safe_indexing(corpus, train_idxs)
corpus_test = utils.safe_indexing(corpus, test_idxs)
y_train = utils.safe_indexing(labels, train_idxs)
y_test = utils.safe_indexing(labels, test_idxs)
ft = FeatureExtractor()
X_train = ft.extract_features(corpus_train, 'X_train_ELMo.pkl',
'X_train_ELMo.dat')
X_test = ft.extract_features(corpus_test, 'X_test_ELMo.pkl',
'X_test_ELMo.dat')
clfs = [
ensemble.RandomForestClassifier(n_estimators=100,
n_jobs=n_jobs,
random_state=RANDOM_STATE),
LinearSVC(random_state=RANDOM_STATE),
dummy.DummyClassifier(strategy='stratified',
random_state=RANDOM_STATE,
constant=None),
linear_model.SGDClassifier(loss='modified_huber',
max_iter=1000,
tol=1e-3,
n_jobs=n_jobs,
random_state=RANDOM_STATE)
]
predictions = {'y_true': y_test}
for clf in tqdm(iterable=clfs, desc='Fitting classifiers', unit='clf'):
clf.fit(X_train, y_train)
dump_pickle(clf, '%s.pkl' % (clf.__class__.__name__))
for clf in tqdm(iterable=clfs, desc='Obtaining probabilities', unit='clf'):
y_predict_proba = clf.predict_proba(X_test)
dicts = predict_proba_to_dicts(clf.classes_, y_predict_proba)
predictions[clf.__class__.__name__] = dicts
dump_json(predictions, 'predictions.json')
execution_info['End date'] = [get_local_time_str()]
execution_info['Excel file'] = excel_file
execution_info['Text column'] = text_column
execution_info['Label column'] = labels_column
execution_info['n_jobs'] = n_jobs
execution_info['Accepted probabilities'] = n_accepted_probs
generate_report(execution_info, predictions, output_file)
def testZeroHour(STOCK, future_day, data_for_algos, data_to_predict_for_algos, test_classes):
try:
model = dummy.DummyClassifier(strategy="most_frequent")
X = np.asarray(list(map(lambda row: row[:-1], data_for_algos)))
y = np.asarray(list(map(lambda row: row[-1], data_for_algos)))
model.fit(X, y)
predictions = model.predict(data_to_predict_for_algos)
our_test_score = get_test_score(predictions, test_classes)
result = result_in_csv(STOCK, 'ZR', Future_day=future_day, Our_test_score=our_test_score)
except:
result = result_in_csv(STOCK, 'ZR', Future_day=future_day, Our_test_score=-1)
print(result)
return result
def classification(data_matrix,
target_matrix,
test_matrix,
strategy='most_frequent'):
print "data detected", datetime.now().time()
model = dummy.DummyClassifier(strategy=strategy,
random_state=None,
constant=None)
print "model made", datetime.now().time()
model.fit(data_matrix, target_matrix)
print "model fitted", datetime.now().time()
results = model.predict(test_matrix)
print results
def fit(self, x, y):
'''
Fit method for the MetaEstimator. Output is a fitted estimator, that can then be used
for prediction.
'''
# Determine if regression or classification problem, by comparing number of
# unique values in output against threshold
if self.method_type is None:
is_above = len(np.unique(y, axis=0)) > self.cutoff_categorical
self.method_type = ('classif','regr')[is_above]
# Fetch the appropriate list of estimators
if self.estimators is None:
if self.method is not None:
self.get_estim(y)
else:
if self.method_type == 'regr':
self.estimators = linear_model.LassoCV(normalize=True)
elif self.method_type == 'classif':
self.estimators = ensemble.RandomForestClassifier(random_state=1)
else:
if self.method_type == 'regr':
self.estimators = self.estimators[0]
elif self.method_type == 'classif':
self.estimators = self.estimators[1]
# Collect information on classes in training set (needed later)
if self.method_type == 'classif':
self.classes = dummy.DummyClassifier().fit(x, y).classes_
# Fit according to respective ensembling method
if self.method == 'stacking':
if self.method_type == 'regr':
self.fitted = regressor.StackingRegressor(regressors=self.estimators,
meta_regressor=linear_model.LinearRegression()).fit(x, y)
elif self.method_type == 'classif':
self.fitted = classifier.StackingClassifier(classifiers=self.estimators,
meta_classifier=linear_model.LogisticRegression(random_state = 1)).fit(x, y)
elif self.method == 'multiplexing':
for i in self.estimators:
self.losses.append(np.mean(cross_val_score(i, x, y)))
# For multiplexing, cross validation scores determine which estimator is chosen
self.fitted = self.estimators[np.argmin(self.losses)].fit(x, y)
else:
self.fitted = self.estimators.fit(x, y)
return self
def zero_cost_model(self,X,y,add_to_model=False):
if self.base_model._estimator_type=='classifier':
model = dummy.DummyClassifier("prior")
elif self.base_model._estimator_type=='regressor':
model = dummy.DummyRegressor("mean")
else: raise TypeError("sklearn Classifier or Regressor required!")
cost = 0
features = []
model.fit(self.selectfeats(X,features),y)
if add_to_model:
self.model_costs.insert(0,cost)
self.model_features.insert(0,features)
self.models.insert(0,model)
return (model, cost, features)
def run_cv(data, features, labels, folds):
baseline = dummy.DummyClassifier(strategy='most_frequent')
predictions = cross_val_predict(baseline,
features,
labels,
cv=folds,
n_jobs=-1)
print('Cross-validated baseline most frequent:',
accuracy_score(labels, predictions),
file=stderr)
nb = naive_bayes.GaussianNB()
predictions = cross_val_predict(nb, features, labels, cv=folds, n_jobs=-1)
print('Cross-validated naive Bayes:',
accuracy_score(labels, predictions),
file=stderr)
knn_uni = neighbors.KNeighborsClassifier()
predictions = cross_val_predict(knn_uni,
features,
labels,
cv=folds,
n_jobs=-1)
print('Cross-validated KNN (uniform):',
accuracy_score(labels, predictions),
file=stderr)
knn_dist = neighbors.KNeighborsClassifier(weights='distance')
predictions = cross_val_predict(knn_dist,
features,
labels,
cv=folds,
n_jobs=-1)
print('Cross-validated KNN (distance):',
accuracy_score(labels, predictions),
file=stderr)
logreg = linear_model.LogisticRegression()
# rfecv = RFECV(logreg, cv=10)
predictions = cross_val_predict(logreg,
features,
labels,
cv=folds,
n_jobs=-1)
print('Cross-validated logistic regression:',
accuracy_score(labels, predictions),
file=stderr)
for i, prediction in enumerate(predictions):
print(data['docno'][i], data['query'][i], prediction)
def __pred_randomly(self, X_train, y_train, X_test):
dummyX_train = [[0] for x in X_train]
dummyX_test = [[0] for x in X_test]
clf = None
if self.dataset.type == 'c':
clf = dummy.DummyClassifier(strategy=self.dummy_strategy)
else:
clf = dummy.DummyRegressor()
clf.fit(dummyX_train, y_train)
return clf.predict(dummyX_test)
def testZeroHour(STOCK, future_day, data_for_algos):
test_size = future_day
X = np.asarray(list(map(lambda row: row[:-1], data_for_algos)))
y = np.asarray(list(map(lambda row: row[-1], data_for_algos)))
try:
model = dummy.DummyClassifier(strategy="most_frequent")
model.fit(X[:-test_size], y[:-test_size])
except:
return result_in_csv(STOCK,
'ZR',
Future_day=future_day,
Our_test_score=-1)
our_score = model.score(X[-test_size:], y[-test_size:])
return result_in_csv(STOCK,
'ZR',
Future_day=future_day,
Our_test_score=our_score)
def zr(data, future_day):
scores = []
X = np.asarray(list(map(lambda row: row[:-1], data)))
y = np.asarray(list(map(lambda row: row[-1], data)))
train_indices, test_indices = k_splits.get_max_k_splits(
X, k=10, size_of_each_split=future_day)
model = dummy.DummyClassifier(strategy="most_frequent")
predict_score = -1
for train_index, test_index in zip(train_indices, test_indices):
X_train, y_train, X_test, y_test = k_splits.get_train_test_set(
X, y, train_index, test_index)
model.fit(X_train, y_train)
predict_score = score.get_score(model, X_test, y_test)
scores.append(predict_score)
mean_score = np.mean(scores[:-1])
mean_score = -1 if np.isnan(mean_score) else mean_score
return model, mean_score, predict_score
def testZeroHour(STOCK, future_day, data_for_algos, data_to_predict_for_algos,
test_classes):
try:
model = dummy.DummyClassifier(strategy="most_frequent")
X = np.asarray(list(map(lambda row: row[:-1], data_for_algos)))
y = np.asarray(list(map(lambda row: row[-1], data_for_algos)))
model.fit(X, y)
predictions = model.predict(data_to_predict_for_algos)
our_test_score = collections.Counter(predictions[0:future_day] *
test_classes[0:future_day]).get(1)
our_test_score = 0 if our_test_score is None else our_test_score
result = f"{STOCK},ZR,0,0,0,0,{future_day},{our_test_score}\n"
except:
result = f"{STOCK},ZR,0,0,0,0,{future_day},error\n"
print(result)
return result
def run_baseline(config, datasets):
#model = dummy.DummyClassifier(strategy='stratified')
model = dummy.DummyClassifier(strategy='most_frequent')
model.fit(datasets.train_vectors, datasets.train_labels)
#test_acc = model.score(datasets.test_vectors, datasets.test_labels)
preds = model.predict(datasets.test_vectors)
test_acc = accuracy_score(datasets.test_labels, preds)
print("baseline(most_freq) test_acc: %.4f" % (test_acc))
test_acc_by_tag = {}
test_acc_by_freqbin = {}
if config.test_tags:
test_acc_by_tag = test_breakdown_by_tag(datasets.test_labels, preds,
datasets.test_words, '__')
if config.freq_dict:
test_acc_by_freqbin = test_breakdown_by_freqbin(
datasets.test_labels, preds, datasets.test_words, '__',
datasets.freqbin_dict)
return test_acc, test_acc_by_tag, test_acc_by_freqbin
def __create_models(self) -> list[tuple[Any, ModelType]]:
n_jobs = self.config.n_jobs
model_type = self.config.model_type
models = []
if model_type in [ModelType.ALL, ModelType.DUMMY]:
models.append((dummy.DummyClassifier(strategy="stratified"),
ModelType.DUMMY))
if model_type in [ModelType.ALL, ModelType.RANDOM_FOREST]:
models.append((
ensemble.RandomForestClassifier(n_jobs=n_jobs),
ModelType.RANDOM_FOREST,
))
if model_type in [ModelType.ALL, ModelType.EXTRA_TREES]:
models.append((
ensemble.ExtraTreesClassifier(n_jobs=n_jobs),
ModelType.EXTRA_TREES,
))
if model_type in [ModelType.ALL, ModelType.LGBM]:
n_labels = self.dataset_train.n_labels
models.append((
lgb.LGBMClassifier(objective="multiclass",
num_class=n_labels,
n_jobs=n_jobs),
ModelType.LGBM,
))
if model_type in [ModelType.ALL, ModelType.SVM]:
models.append((svm.SVC(), ModelType.SVM))
if model_type in [ModelType.ALL, ModelType.KNN]:
models.append(
(neighbors.KNeighborsClassifier(n_jobs=n_jobs), ModelType.KNN))
return models
def test_gridsearch():
doctor = strategyGame.strategyGameDoctor()
ratingCounts = [10, 30, 50, 80, 100, 150, 200, 500, 1000, 2000, 3000]
ratingCounts = [100]
scores = []
for minRatingCount in ratingCounts:
Xdata, ydata = getData(minRatingCount)
X = doctor.readXdata(Xdata)
y = doctor.readydata(ydata)
# X, y = preprocess.balanceSample(X, y)
pipe = doctor.getPipe()
model1 = ordinalClassifier.OrdinalClassifier(
linear_model.LogisticRegression())
model2 = tree.DecisionTreeClassifier(max_depth=5)
model3 = ensemble.RandomForestClassifier(max_depth=10)
model4 = dummy.DummyClassifier(strategy="most_frequent")
transformer1 = pipeline.Pipeline([("pac", decomposition.PCA())])
transformer2 = "passthrough"
# model5 = naive_bayes.GaussianNB()
paramGrid = {
"tranformer": [transformer2],
"model": [model3, model4],
# "model__max_depth": [3, 5, 7, 10, 15],
}
gscv = model_selection.GridSearchCV(pipe,
paramGrid,
cv=5,
scoring="accuracy")
gscv.fit(X, y)
print("\nGrid Search Report")
for key in ["mean_test_score", "std_test_score", "rank_test_score"]:
print(f"{key}:{[round(x,2) for x in gscv.cv_results_[key]]}")
scores.append(
(minRatingCount, list(gscv.cv_results_["mean_test_score"])))
print(scores)
ensemble.RandomForestClassifier(max_depth=2, random_state=0),
'Adaboost':
ensemble.AdaBoostClassifier(random_state=0),
'MultinomialNB':
naive_bayes.MultinomialNB(),
# 'GaussianNB': gnb_predict,
'BernoulliNB':
naive_bayes.BernoulliNB(),
'KNN':
neighbors.KNeighborsClassifier(n_neighbors=10),
'SVM':
svm.SVC(kernel='rbf', gamma=0.7, C=1, probability=True),
# 'Random':
# dummy.DummyClassifier(strategy='stratified'),
'Most Frequent':
dummy.DummyClassifier(strategy='most_frequent')
}
#----------------------------------------------preprocessing--------------------------------------------------------#
file = pd.read_csv('rnn3.csv')
dim = np.arange(length).astype(str)
#train
label = file[str(length)].values.astype(int)
data = np.asarray(file[dim].values / 101)
X_train, X_test, y_train, y_test = train_test_split(data,
label,
test_size=0.2,
random_state=294967295)
import pandas as pd
import os
from sklearn import dummy
dir = 'E:/'
titanic_train = pd.read_csv(os.path.join(dir, 'train.csv'))
print(titanic_train.info())
print(titanic_train.columns)
titanic_train.groupby('Survived').size()
X_train = titanic_train[ ['SibSp', 'Parch'] ]
y_train = titanic_train['Survived']
dummy_estimator = dummy.DummyClassifier(strategy="stratified", random_state=10)
dummy_estimator.fit(X_train, y_train)
titanic_test = pd.read_csv(os.path.join(dir, 'test.csv'))
print(titanic_test.info())
X_test = titanic_test[ ['SibSp', 'Parch'] ]
titanic_test['Survived'] = dummy_estimator.predict(X_test)
titanic_test.groupby('Survived').size()
titanic_test.to_csv(os.path.join(dir, 'submission.csv'), columns=['PassengerId', 'Survived'], index=False)
def testDummyClassifier():
dummyClassifier = dummy.DummyClassifier(strategy="stratified")
X = [[0]] * 10
y = [0, 1, 2, 0, 1, 2, 0, 0, 1, 2]
dummyClassifier.fit(X, y)
dbName = "/Test/gt10/gt10_last500Responses.db"
connectToDB(dbName)
allEntries = fetchAllNearDuplicates("where human_classification>=0")
closeDBConnection()
y_actual = []
fieldNames = [
'thresholdSet', 'algoName', 'c-thre', 'n-thre', 'precision', 'recall',
'f1'
]
for entry in allEntries:
index = 4
for algo in ALGOS:
index = index + 1
y_actual.append(entry[index])
y_pred = dummyClassifier.predict(y_actual)
precision, recall, f1, support = metrics.precision_recall_fscore_support(
y_actual, y_pred, average="macro")
# precision = metrics.precision(y_actual, y_pred[algoStr], average="macro")
# recall = metrics.recall(y_actual, y_pred[algoStr], average="macro")
# f1 = metrics.f1_score(y_actual, y_pred[algoStr], average="macro")
row1 = {
'thresholdSet': None,
'algoName': "dummy",
'c-thre': None,
'n-thre': None,
'precision': precision,
'recall': recall,
'f1': f1
}
print(row1)
dbName = "/comparator/src/main/resources/GoldStandards/SS.db"
connectToDB(dbName)
allEntries = fetchAllNearDuplicates("where human_classification>=0")
closeDBConnection()
y_actual = []
for entry in allEntries:
index = 4
for algo in ALGOS:
index = index + 1
y_actual.append(entry[index])
y_pred = dummyClassifier.predict(y_actual)
precision, recall, f1, support = metrics.precision_recall_fscore_support(
y_actual, y_pred, average="macro")
row2 = {
'thresholdSet': None,
'algoName': "dummy",
'c-thre': None,
'n-thre': None,
'precision': precision,
'recall': recall,
'f1': f1
}
print(row2)
writeCSV(fieldNames, [row1, row2], "rq1_dummy.csv")
def getF1_Classifier(allEntries):
y_pred = {}
for algo in ALGOS:
algoStr = str(algo).split('.')[1].upper()
y_pred[algoStr] = []
y_actual = []
print(len(allEntries))
threshold_sets = {}
# threshold_sets["proportion_based"] = [getThreshold(THRESHOLD_SETS.FULLDB_QUART1, DB_SETS.GT10_DB_DATA, 'all'), getThreshold(THRESHOLD_SETS.FULLDB_MEDIAN, DB_SETS.GT10_DB_DATA, 'all')]
threshold_sets["statistical"] = [
getThreshold(THRESHOLD_SETS.HUMANCLONE_QUART3, DB_SETS.GT10_DB_DATA,
'all'),
getThreshold(THRESHOLD_SETS.HUMANND_MEDIAN, DB_SETS.GT10_DB_DATA,
'all')
]
threshold_sets["optimal"] = [
getThreshold(THRESHOLD_SETS.OPTIMAL_CLASSIFICATION_CLONE,
DB_SETS.GT10_DB_DATA, 'all'),
getThreshold(THRESHOLD_SETS.OPTIMAL_CLASSIFICATION_ND,
DB_SETS.GT10_DB_DATA, 'all')
]
algoScoreRows = []
fieldNames = [
'thresholdSet', 'algoName', 'c-thre', 'n-thre', 'precision', 'recall',
'f1'
]
dummyClassifier = dummy.DummyClassifier(strategy="stratified")
print(threshold_sets)
for threshold_set_name in threshold_sets:
threshold_set = threshold_sets[threshold_set_name]
cloneThresholds = threshold_set[0]
ndThresholds = threshold_set[1]
# print(cloneThresholds)
for entry in allEntries:
index = 4
for algo in ALGOS:
algoStr = str(algo).split('.')[1].upper()
value = float(entry[index])
pred = -1
if algo.value[2] == "lt":
if value <= cloneThresholds[algoStr]:
pred = 0
if value > cloneThresholds[algoStr]:
if value <= ndThresholds[algoStr]:
pred = 1
else:
pred = 2
else:
if value >= cloneThresholds[algoStr]:
pred = 0
if value < cloneThresholds[algoStr]:
if value >= ndThresholds[algoStr]:
pred = 1
else:
pred = 2
y_pred[algoStr].append(pred)
index = index + 1
y_actual.append(entry[index])
for algo in ALGOS:
algoStr = str(algo).split('.')[1].upper()
cm = metrics.confusion_matrix(y_actual, y_pred[algoStr])
# print(cm)
precision, recall, f1, support = metrics.precision_recall_fscore_support(
y_actual, y_pred[algoStr], average="macro")
# precision = metrics.precision(y_actual, y_pred[algoStr], average="macro")
# recall = metrics.recall(y_actual, y_pred[algoStr], average="macro")
# f1 = metrics.f1_score(y_actual, y_pred[algoStr], average="macro")
row = {
'thresholdSet': threshold_set_name,
'algoName': algoStr,
'c-thre': cloneThresholds[algoStr],
'n-thre': ndThresholds[algoStr],
'precision': precision,
'recall': recall,
'f1': f1
}
algoScoreRows.append(row)
X = [[0]] * len(y_actual)
dummyClassifier.fit(X, y_actual)
y_pred_dummy = dummyClassifier.predict(y_actual)
precision, recall, f1, support = metrics.precision_recall_fscore_support(
y_actual, y_pred_dummy, average="macro")
row2 = {
'thresholdSet': None,
'algoName': "dummy",
'c-thre': None,
'n-thre': None,
'precision': precision,
'recall': recall,
'f1': f1
}
algoScoreRows.append(row2)
writeCSV(
fieldNames, algoScoreRows,
os.path.join(
os.path.abspath(".."), RESULTS_FOLDER,
"rq1_" + str(datetime.now().strftime("%Y%m%d-%H%M%S")) + ".csv"))
ensemble.RandomForestClassifier(max_depth=2, random_state=0),
'Adaboost':
ensemble.AdaBoostClassifier(random_state=0),
'MultinomialNB':
naive_bayes.MultinomialNB(),
# 'GaussianNB': gnb_predict,
'BernoulliNB':
naive_bayes.BernoulliNB(),
'KNN':
neighbors.KNeighborsClassifier(n_neighbors=10),
'SVM':
svm.SVC(kernel='rbf', gamma=0.7, C=1, probability=True),
# 'Random':
# dummy.DummyClassifier(strategy='stratified'),
'Most Frequent':
dummy.DummyClassifier(strategy='most_frequent'),
'Uniform':
dummy.DummyClassifier(strategy='uniform')
}
#----------------------------------------------preprocessing--------------------------------------------------------#
file = pd.read_csv('rnn3.csv')
dim = np.arange(length).astype(str)
#train
label = file[str(length)].values.astype(int)
data = np.asarray(file[dim].values / 101)
X_train, X_test, y_train, y_test = train_test_split(data,
label,
import pandas as pd import os from sklearn import dummy dir = 'E:/' titanic_train = pd.read_csv(os.path.join(dir, 'train.csv')) print(titanic_train.info()) print(titanic_train.columns) X_train = titanic_train[ ['SibSp', 'Parch'] ] y_train = titanic_train['Survived'] dummy_estimator = dummy.DummyClassifier(strategy="uniform", random_state=10) dummy_estimator.fit(X_train, y_train) titanic_test = pd.read_csv(os.path.join(dir, 'test.csv')) print(titanic_test.info()) X_test = titanic_test[ ['SibSp', 'Parch'] ] titanic_test['Survived'] = dummy_estimator.predict(X_test) titanic_test.to_csv(os.path.join(dir, 'submission.csv'), columns=['PassengerId', 'Survived'], index=False)
