def icap(data):
rank = []
for i in range(6):
X = data[i][:, :-1]
Y = data[i][:, -1]
F, _, _ = ICAP.icap(X, Y)
idx = samp(F[:-1].tolist())
rank.append(idx)
R = rankaggregate(rank)
return R
def main():
# load data
mat = scipy.io.loadmat('../data/colon.mat')
X = mat['X'] # data
X = X.astype(float)
y = mat['Y'] # label
y = y[:, 0]
n_samples, n_features = X.shape # number of samples and number of features
# split data into 10 folds
ss = cross_validation.KFold(n_samples, n_folds=10, shuffle=True)
# perform evaluation on classification task
num_fea = 10 # number of selected features
clf = svm.LinearSVC() # linear SVM
correct = 0
for train, test in ss:
# obtain the index of each feature on the training set
idx = ICAP.icap(X[train], y[train], n_selected_features=num_fea)
# obtain the dataset on the selected features
features = X[:, idx[0:num_fea]]
# train a classification model with the selected features on the training dataset
clf.fit(features[train], y[train])
# predict the class labels of test data
y_predict = clf.predict(features[test])
# obtain the classification accuracy on the test data
acc = accuracy_score(y[test], y_predict)
correct = correct + acc
# output the average classification accuracy over all 10 folds
print 'Accuracy:', float(correct)/10
def main():
# load data
mat = scipy.io.loadmat('../data/colon.mat')
X = mat['X'] # data
X = X.astype(float)
y = mat['Y'] # label
y = y[:, 0]
n_samples, n_features = X.shape # number of samples and number of features
# split data into 10 folds
ss = cross_validation.KFold(n_samples, n_folds=10, shuffle=True)
# perform evaluation on classification task
num_fea = 10 # number of selected features
clf = svm.LinearSVC() # linear SVM
correct = 0
for train, test in ss:
# obtain the index of each feature on the training set
idx, _, _ = ICAP.icap(X[train], y[train], n_selected_features=num_fea)
# obtain the dataset on the selected features
features = X[:, idx[0:num_fea]]
# train a classification model with the selected features on the training dataset
clf.fit(features[train], y[train])
# predict the class labels of test data
y_predict = clf.predict(features[test])
# obtain the classification accuracy on the test data
acc = accuracy_score(y[test], y_predict)
correct = correct + acc
# output the average classification accuracy over all 10 folds
print('Accuracy:', float(correct) / 10)
def ICAP_featureSelection(x, y):
idx = ICAP.icap(x, y)
rank = feature_ranking(idx)
return rank
print('MIM')
MV_sel.append(('MIFS', MIFS.mifs(X_train, Y_train,
n_selected_features=num_fea)))
print('MIFS')
MV_sel.append(('MRMR', MRMR.mrmr(X_train, Y_train,
n_selected_features=num_fea)))
print('MRMR')
MV_sel.append(('CIFE', CIFE.cife(X_train, Y_train,
n_selected_features=num_fea)))
print('CIFE')
MV_sel.append(('JMI', JMI.jmi(X_train, Y_train, n_selected_features=num_fea)))
print('JMI')
MV_sel.append(('CMIM', CMIM.cmim(X_train, Y_train,
n_selected_features=num_fea)))
print('CMIM')
MV_sel.append(('ICAP', ICAP.icap(X_train, Y_train,
n_selected_features=num_fea)))
print('ICAP')
MV_sel.append(('DISR', DISR.disr(X_train, Y_train,
n_selected_features=num_fea)))
for name, model in models:
for kind, idx in MV_sel:
#print(idx[0:num_fea][0])
# X_sel = X[:, idx[0:num_fea]]
X_test_ = X_test[:, idx[0:num_fea]]
X_validate_ = X_validate[:, idx[0:num_fea]]
X_train_ = X_train[:, idx[0:num_fea]]
# X_train, X_validation, Y_train, Y_validation = model_selection.train_test_split(X_sel, Y, test_size=validation_size, random_state=seed)
#kfold = model_selection.KFold(n_splits=10, random_state=seed)
cv_results = model_selection.cross_val_score(model,
X_train_,
# print('BEFORE')
MV_sel = []
MV_sel.append(('WLCX', WLCX(X, Y, n_selected_features=num_fea)))
print('WLCX')
MV_sel.append(('MIFS', MIFS.mifs(X, Y, n_selected_features=num_fea)))
print('MIFS')
MV_sel.append(('MRMR', MRMR.mrmr(X, Y, n_selected_features=num_fea)))
print('MRMR')
MV_sel.append(('CIFE', CIFE.cife(X, Y, n_selected_features=num_fea)))
print('CIFE')
MV_sel.append(('JMI', JMI.jmi(X, Y, n_selected_features=num_fea)))
print('JMI')
MV_sel.append(('CMIM', CMIM.cmim(X, Y, n_selected_features=num_fea)))
print('CMIM')
MV_sel.append(('ICAP', ICAP.icap(X, Y, n_selected_features=num_fea)))
print('ICAP')
MV_sel.append(('DISR', DISR.disr(X, Y, n_selected_features=num_fea)))
for name, model in models:
for kind, idx in MV_sel:
# X_sel = X[:, idx[0:num_fea]]
# X_test_ = X_test[:,idx[0:num_fea]]
X_train_ = X_train[:, idx[0:num_fea]]
# X_validation_ = X_validation[:, idx[0:num_fea]]
# X_train, X_validation, Y_train, Y_validation = model_selection.train_test_split(X_sel, Y, test_size=validation_size, random_state=seed)
# kfold = model_selection.KFold(n_splits=10, random_state=seed)
# cv_results = model_selection.cross_val_score(model, X_train_, Y_train, cv=kfold)
# msg = "%s %s: %f (%f)\n" % (kind, name, cv_results.mean(), cv_results.std())
# output.write(msg)