def test_vbgmm_no_modify_alpha():
alpha = 2.
n_components = 3
X, y = make_blobs(random_state=1)
vbgmm = VBGMM(n_components=n_components, alpha=alpha, n_iter=1)
assert_equal(vbgmm.alpha, alpha)
assert_equal(vbgmm.fit(X).alpha_, float(alpha) / n_components)
def test_vbgmm_no_modify_alpha():
alpha = 2.
n_components = 3
X, y = make_blobs(random_state=1)
vbgmm = VBGMM(n_components=n_components, alpha=alpha, n_iter=1)
assert_equal(vbgmm.alpha, alpha)
assert_equal(vbgmm.fit(X).alpha_, float(alpha) / n_components)
def _fit_vbgmm(self, x):
# clustering
for c in xrange(len(self.crange)):
k = self.crange[c]
for r in xrange(self.repeats):
# info
if self.debug is True:
print '\t[%s][c:%d][r:%d]' % (self.clus_type,
self.crange[c], r + 1),
idx = c * self.repeats + r
# fit and evaluate model
model_kwargs = {}
if 'alpha' in self.clus_kwargs:
model_kwargs.update(alpha=self.clus_kwargs['alpha'])
if 'conv_thresh' in self.clus_kwargs:
model_kwargs.update(thresh=self.clus_kwargs['conv_thresh'])
model = VBGMM(n_components=k,
covariance_type=self.cvtype,
**model_kwargs)
model.n_features = self.input_dim
fit_kwargs = {}
if 'max_iter' in self.clus_kwargs:
fit_kwargs.update(n_iter=self.clus_kwargs['max_iter'])
model.fit(x, params='wmc', init_params='wmc', **fit_kwargs)
self._labels[idx] = model.predict(x)
self._parameters[idx] = model.means
self._ll[idx] = model.score(x).sum()
# evaluate goodness of fit
self._gof[idx] = self.gof(x, self._ll[idx], k)
# debug
if self.debug is True:
print self._gof[idx], model.converged_
def _fit_vbgmm(self, x):
# clustering
for c in xrange(len(self.crange)):
k = self.crange[c]
for r in xrange(self.repeats):
# info
if self.debug is True:
print '\t[%s][c:%d][r:%d]' % (
self.clus_type, self.crange[c], r + 1),
idx = c * self.repeats + r
# fit and evaluate model
model_kwargs = {}
if 'alpha' in self.clus_kwargs:
model_kwargs.update(alpha=self.clus_kwargs['alpha'])
if 'conv_thresh' in self.clus_kwargs:
model_kwargs.update(thresh=self.clus_kwargs['conv_thresh'])
model = VBGMM(n_components=k, covariance_type=self.cvtype,
**model_kwargs)
model.n_features = self.input_dim
fit_kwargs = {}
if 'max_iter' in self.clus_kwargs:
fit_kwargs.update(n_iter=self.clus_kwargs['max_iter'])
model.fit(x, params='wmc', init_params='wmc', **fit_kwargs)
self._labels[idx] = model.predict(x)
self._parameters[idx] = model.means
self._ll[idx] = model.score(x).sum()
# evaluate goodness of fit
self._gof[idx] = self.gof(x, self._ll[idx], k)
# debug
if self.debug is True:
print self._gof[idx], model.converged_
def main(method,cluster_num=30,alpha=.5):
f ='/Users/davidgreenfield/Downloads/features_csv_tmp.csv'
#f ='/Users/davidgreenfield/Downloads/features_f500.csv'
cols=range(1,4096)
feats =np.loadtxt(open(f,"rb"),delimiter=",",skiprows=1,usecols=(cols))
asins = np.loadtxt(open(f,"rb"),delimiter=",",skiprows=1,usecols=([0]),dtype=str)
if method == 'kmeans':
k_means=cluster.KMeans(n_clusters=cluster_num)
k_means.fit(feats)
y = k_means.labels_
if MAKE_GRAPH==1:
print "hello 1"
create_graph(k_means)
elif method == 'GMM_VB':
gmm_vb = VBGMM.fit(feats,n_components=50,alpha=.5)
y = gmm_vb.predict(feats)
cluster_no = len(np.unique(y))
elif method == 'GMM_DP':
gmm_dp = DPGMM(n_components=50,alpha=alpha)
gmm_dp.fit(feats)
y = gmm_dp.predict(feats)
cluster_no = len(np.unique(y))
clusters=[]
groups={}
data=load_data('./data/boots_aws.csv')
for i in range(0,cluster_num):
groups[i]=np.where(y==i)
ids=asins[groups[i]]
clusters.append(ids)
links=[data[x]['url'] for x in ids]
create_html(links,"templates/groups/group"+str(i)+".html")
output_clusters(clusters,"outputs/clusters.csv")
def do_model(self, **kwds):
return VBGMM(verbose=False, **kwds)
# Useful for seeing all sklearn estimators that have `predict_prob` attribute
estimators = all_estimators()
for name, class_ in estimators:
if hasattr(class_, 'predict_proba'):
print(name)
# Now pick and choose the ones you like
estimators = {
AdaBoostClassifier(): 'AdaBoost',
BayesianGaussianMixture(): 'BayesianGaussianMixture',
BernoulliNB(): 'BernoulliNB',
DPGMM(): 'DPGMM',
ExtraTreesClassifier(): 'ExtraTreesClassifier',
GMM(): 'GMM',
GaussianNB(): 'GaussianNB',
GaussianProcessClassifier(): 'GaussianProcessClassifier',
GradientBoostingClassifier(): 'GradientBoostingClassifier',
KNeighborsClassifier(): 'KNeighborsClassifier',
LabelPropagation(): 'LabelPropagation',
LabelSpreading(): 'LabelSpreading',
LinearDiscriminantAnalysis(): 'LinearDiscriminantAnalysis',
LogisticRegression(): 'LogisticRegression',
MLPClassifier(): 'MLPClassifier',
NuSVC(): 'NuSVC',
QuadraticDiscriminantAnalysis(): 'QuadraticDiscriminantAnalysis',
RandomForestClassifier(): 'RandomForestClassifier',
SGDClassifier(): 'SGDClassifier',
SVC(): 'SVC',
VBGMM(): 'VBGMM'
}
def run_all_classifiers(X_train, X_test, y_train, y_test, print_output_scores_to_csv=False, output_scores_csv_file_suffix='', print_only_table=False):
"""
The list of all classifiers was generated by running the following commented code.
Args:
a_X_train, a_X_test, a_y_train, a_y_test: The train and tests datasets.
a_print_output_scores_to_csv: If True the Precision, Recall, F1-Score and Support for both classes will
be printed to a file with the current date and time.
a_output_scores_csv_file_suffix: Suffix to be added to the csv file just before the .csv extension. Normally
describing the run that is being performed.
Returns:
dataset: Returns output scores dataset.
"""
assert isinstance(X_train, pd.core.frame.DataFrame)
assert isinstance(X_test, pd.core.frame.DataFrame)
assert isinstance(y_train, pd.core.frame.Series)
assert isinstance(y_test, pd.core.frame.Series)
assert isinstance(print_output_scores_to_csv, bool)
assert isinstance(output_scores_csv_file_suffix, object)
import time
# https://stackoverflow.com/questions/42160313/how-to-list-all-classification-regression-clustering-algorithms-in-scikit-learn
#from sklearn.utils.testing import all_estimators
#estimators = all_estimators()
#for name, class_ in estimators:
# log_print(name)
from sklearn.calibration import CalibratedClassifierCV
from sklearn.discriminant_analysis import LinearDiscriminantAnalysis
from sklearn.discriminant_analysis import QuadraticDiscriminantAnalysis
from sklearn.ensemble import AdaBoostClassifier
from sklearn.ensemble import BaggingClassifier
from sklearn.ensemble import ExtraTreesClassifier
from sklearn.ensemble import GradientBoostingClassifier
from sklearn.ensemble import RandomForestClassifier
from sklearn.gaussian_process import GaussianProcessClassifier
from sklearn.linear_model import LogisticRegression
from sklearn.linear_model import LogisticRegressionCV
from sklearn.linear_model import SGDClassifier
from sklearn.mixture import BayesianGaussianMixture
from sklearn.mixture import DPGMM
from sklearn.mixture import GaussianMixture
from sklearn.mixture import GMM
from sklearn.mixture import VBGMM
from sklearn.naive_bayes import BernoulliNB
from sklearn.naive_bayes import GaussianNB
from sklearn.neighbors import KNeighborsClassifier
from sklearn.neural_network import MLPClassifier
from sklearn.semi_supervised import LabelPropagation
from sklearn.semi_supervised import LabelSpreading
from sklearn.svm import SVC
from sklearn.tree import DecisionTreeClassifier
#from xgboost import XGBClassifier
models = []
models.append(('AdaBoostClassifier', AdaBoostClassifier()))
models.append(('BaggingClassifier', BaggingClassifier()))
models.append(('BayesianGaussianMixture', BayesianGaussianMixture()))
models.append(('BernoulliNB', BernoulliNB()))
models.append(('CalibratedClassifierCV', CalibratedClassifierCV()))
models.append(('DPGMM', DPGMM()))
models.append(('DecisionTreeClassifier', DecisionTreeClassifier(random_state=SEED)))
models.append(('ExtraTreesClassifier', ExtraTreesClassifier(random_state=SEED)))
models.append(('GMM', GMM()))
models.append(('GaussianMixture', GaussianMixture()))
models.append(('GaussianNB', GaussianNB()))
models.append(('GaussianProcessClassifier', GaussianProcessClassifier()))
models.append(('GradientBoostingClassifier', GradientBoostingClassifier()))
models.append(('KNeighborsClassifier', KNeighborsClassifier()))
models.append(('LabelPropagation', LabelPropagation()))
models.append(('LabelSpreading', LabelSpreading()))
models.append(('LinearDiscriminantAnalysis', LinearDiscriminantAnalysis()))
models.append(('LogisticRegression', LogisticRegression()))
models.append(('LogisticRegressionCV', LogisticRegressionCV()))
models.append(('MLPClassifier', MLPClassifier()))
#models.append(('MultinomialNB', MultinomialNB()))
#models.append(('NuSVC', NuSVC()))
models.append(('QuadraticDiscriminantAnalysis', QuadraticDiscriminantAnalysis()))
models.append(('RandomForestClassifier', RandomForestClassifier(random_state=SEED)))
models.append(('SGDClassifier', SGDClassifier()))
models.append(('SVC', SVC()))
models.append(('VBGMM', VBGMM()))
#models.append(('XGBClassifier', XGBClassifier()))
output_scores_df = fit_predict_plot(X_train, X_test, y_train, y_test, models, print_only_table)
if print_output_scores_to_csv:
output_scores_df.to_csv(time.strftime('output_scores' + str(output_scores_csv_file_suffix) + '.csv')
return output_scores_df
def run_all_classifiers(X_train, X_test, y_train, y_test, print_details=True):
"""
Run all classifiers of sklearn
Args:
X_train, X_test, y_train, y_test: The train and tests datasets.
print_details: if true, print details of all models and save csv table ;
if false, print only table with summary of the models
Returns:
dataset: Returns output scores dataset.
"""
assert isinstance(X_train, pd.core.frame.DataFrame)
assert isinstance(X_test, pd.core.frame.DataFrame)
assert isinstance(y_train, pd.core.frame.Series)
assert isinstance(y_test, pd.core.frame.Series)
assert isinstance(print_details, bool)
log_method_execution_time(log_funcname())
from sklearn.utils.testing import all_estimators
import sklearn.metrics
import time
from src.util.acq_util import RANDOM_SEED
# https://stackoverflow.com/questions/42160313/how-to-list-all-classification-regression-clustering-algorithms-in-scikit-learn
#from xgboost import XGBClassifier
#models.append(('XGBClassifier', XGBClassifier()))
models = all_estimators(type_filter='classifier')
output_scores_dataset = pd.DataFrame(index=['Precision 0', 'Recall 0', 'F1-Score 0', 'Support 0',
'Precision 1', 'Recall 1', 'F1-Score 1', 'Support 1'],
columns=list(zip(*models))[0])
for name, model in models:
if print_details is True:
print('------------------------------------------------------------------------------')
print(name)
print('------------------------------------------------------------------------------')
if (name == 'MultinomialNB' or name == 'NuSVC' or name == 'RadiusNeighborsClassifier' or name == 'GaussianProcessClassifier'):
continue
model = model()
if 'random_state' in model.get_params():
model.random_state = SEED
#Fitting the model.
model.fit(X_train, y_train)
#Measuring accuracy.
y_train_pred = model.predict(X_train)
y_test_pred = model.predict(X_test)
output_scores_dataset = class_compute_accuracy(y_train, y_train_pred, output_scores_dataset,
['Accuracy on the train set', name], print_details)
output_scores_dataset = class_compute_accuracy(y_test, y_test_pred, output_scores_dataset,
['Accuracy on the test set', name], print_details)
#Plotting confusion matrix.
output_scores_dataset = class_compute_plot_confusion_matrix(y_test, y_test_pred, output_scores_dataset, name, print_details)
#Showing classification report.
if print_details is True:
print(sklearn.metrics.classification_report(y_test, y_test_pred))
# Printing scores to output dataset.
output_scores_dataset = class_compute_recall_precision_f1(y_test, y_test_pred, output_scores_dataset, name)
# Can use idxmax with axis=1 to find the column with the greatest value on each row.
output_scores_dataset['Max Value'] = output_scores_dataset.apply(max, axis=1)
#output_scores_dataset['Max Classifier'] = output_scores_dataset.idxmax(axis=1)
if print_details is True:
output_scores_dataset.to_csv('output_scores' + '.csv')
return output_scores_dataset
def train_test_split_for_classification(dataset, label, test_size, random_state=SEED):
"""
Selects X and y, considering that y has been renamed to label.
"""
from sklearn.model_selection import train_test_split
assert isinstance(dataset, pd.core.frame.DataFrame)
assert isinstance(test_size, float)
assert isinstance(random_state, int)
X = dataset.loc[:, dataset.columns != label]
y = dataset[g_label]
X_train, X_test, y_train, y_test = train_test_split(X, y, test_size=test_size, random_state=random_state, stratify=y)
log_print('X_train: {}'.format(X_train.shape))
log_print('y_train: {}'.format(y_train.shape))
log_print('X_test: {}'.format(X_test.shape))
log_print('y_test: {}'.format(y_test.shape))
return(X_train, X_test, y_train, y_test)