def test_select_fpr_classif():
"""
Test whether the relative univariate feature selection
gets the correct items in a simple classification problem
with the fpr heuristic
"""
X, Y = make_classification(n_samples=200,
n_features=20,
n_informative=3,
n_redundant=2,
n_repeated=0,
n_classes=8,
n_clusters_per_class=1,
flip_y=0.0,
class_sep=10,
shuffle=False,
random_state=0)
univariate_filter = SelectFpr(f_classif, alpha=0.0001)
X_r = univariate_filter.fit(X, Y).transform(X)
X_r2 = GenericUnivariateSelect(f_classif, mode='fpr',
param=0.0001).fit(X, Y).transform(X)
assert_array_equal(X_r, X_r2)
support = univariate_filter.get_support()
gtruth = np.zeros(20)
gtruth[:5] = 1
assert_array_equal(support, gtruth)
def test_select_fpr_classif():
"""
Test whether the relative univariate feature selection
gets the correct items in a simple classification problem
with the fpr heuristic
"""
X, Y = make_classification(
n_samples=200,
n_features=20,
n_informative=3,
n_redundant=2,
n_repeated=0,
n_classes=8,
n_clusters_per_class=1,
flip_y=0.0,
class_sep=10,
shuffle=False,
random_state=0,
)
univariate_filter = SelectFpr(f_classif, alpha=0.0001)
X_r = univariate_filter.fit(X, Y).transform(X)
X_r2 = GenericUnivariateSelect(f_classif, mode="fpr", param=0.0001).fit(X, Y).transform(X)
assert_array_equal(X_r, X_r2)
support = univariate_filter.get_support()
gtruth = np.zeros(20)
gtruth[:5] = 1
assert_array_equal(support, gtruth)
def test_select_fpr_regression():
"""
Test whether the relative univariate feature selection
gets the correct items in a simple regression problem
with the fpr heuristic
"""
X, Y = make_regression(n_samples=200, n_features=20, n_informative=5, shuffle=False, random_state=0)
univariate_filter = SelectFpr(f_regression, alpha=0.01)
X_r = univariate_filter.fit(X, Y).transform(X)
X_r2 = GenericUnivariateSelect(f_regression, mode="fpr", param=0.01).fit(X, Y).transform(X)
assert_array_equal(X_r, X_r2)
support = univariate_filter.get_support()
gtruth = np.zeros(20)
gtruth[:5] = 1
assert (support[:5] == 1).all()
assert np.sum(support[5:] == 1) < 3
def test_select_fpr_regression():
"""
Test whether the relative univariate feature selection
gets the correct items in a simple regression problem
with the fpr heuristic
"""
X, Y = make_regression(n_samples=200, n_features=20,
n_informative=5, shuffle=False, random_state=0)
univariate_filter = SelectFpr(f_regression, alpha=0.01)
X_r = univariate_filter.fit(X, Y).transform(X)
X_r2 = GenericUnivariateSelect(f_regression, mode='fpr',
param=0.01).fit(X, Y).transform(X)
assert_array_equal(X_r, X_r2)
support = univariate_filter.get_support()
gtruth = np.zeros(20)
gtruth[:5] = 1
assert(support[:5] == 1).all()
assert(np.sum(support[5:] == 1) < 3)
'RandomForestClassifier':RandomForestClassifier(), 'RandomForestRegressor':RandomForestRegressor(), 'RandomizedLasso':RandomizedLasso(), 'RandomizedLogisticRegression':RandomizedLogisticRegression(), 'RandomizedPCA':RandomizedPCA(), 'Ridge':Ridge(), 'RidgeCV':RidgeCV(), 'RidgeClassifier':RidgeClassifier(), 'RidgeClassifierCV':RidgeClassifierCV(), 'RobustScaler':RobustScaler(), 'SGDClassifier':SGDClassifier(), 'SGDRegressor':SGDRegressor(), 'SVC':SVC(), 'SVR':SVR(), 'SelectFdr':SelectFdr(), 'SelectFpr':SelectFpr(), 'SelectFwe':SelectFwe(), 'SelectKBest':SelectKBest(), 'SelectPercentile':SelectPercentile(), 'ShrunkCovariance':ShrunkCovariance(), 'SkewedChi2Sampler':SkewedChi2Sampler(), 'SparsePCA':SparsePCA(), 'SparseRandomProjection':SparseRandomProjection(), 'SpectralBiclustering':SpectralBiclustering(), 'SpectralClustering':SpectralClustering(), 'SpectralCoclustering':SpectralCoclustering(), 'SpectralEmbedding':SpectralEmbedding(), 'StandardScaler':StandardScaler(), 'TSNE':TSNE(), 'TheilSenRegressor':TheilSenRegressor(), 'VBGMM':VBGMM(),
def fit(self, X, y):
SelectFpr.fit(self, X,y)
MySelectFpr.total_n_feats += self.get_support().sum()
return self