Exemplo n.º 1
0
Y_train = np.array(Y_train)
X_test = np.array(X_test)
Y_test = np.array(Y_test)

# Hyperparameters
epochs = 0
lRate = .01
C = ['100/873', '500/873', '700/873']
epochs = 100

print('Running Stochastic Gradient Descent for SVM...\n')
#while(epochs < maxIter):

lRate = .01
for c in C:
    w = SVM.SGD(X_train, Y_train, eval(c), lRate, epochs)
    # Get predictions from model
    Y_predict = []
    correct = 0
    n = len(X_train)
    for i in range(n):
        yp = np.sign(np.dot(w, X_train[i]))
        Y_predict.append(yp)
    # Calculate accuracy
    for i in range(len(Y_train)):
        if Y_train[i] == Y_predict[i]:
            correct += 1
    accuracy = correct / n
    print('C = ', c)
    print('Learned weight vector: ', w)
    print('Accuracy: ', accuracy, '\n')