我是Python和Sklearn的初學者。想知道我是否在這裏失去了一些東西。我收到以下警告消息:Python Sklearn - 棄用警告
DeprecationWarning:傳遞一維數組作爲數據在0.17 棄用,在0.19 willraise ValueError異常。
下面是代碼:再次
import numpy as np
import matplotlib.pyplot as plt
from sklearn.linear_model import SGDClassifier
from sklearn.datasets.samples_generator import make_blobs
def plot_sgd_separator():
# we create 50 separable points
X, Y = make_blobs(n_samples=50, centers=2,random_state=0, cluster_std=0.60)
X = np.array(X).reshape((1, -1))
# fit the model
clf = SGDClassifier(loss="hinge", alpha=0.01,
n_iter=200, fit_intercept=True)
clf.fit(X, Y)
# plot the line, the points, and the nearest vectors to the plane
xx = np.linspace(-1, 5, 10)
yy = np.linspace(-1, 5, 10)
X1, X2 = np.meshgrid(xx, yy)
Z = np.empty(X1.shape)
for (i, j), val in np.ndenumerate(X1):
x1 = val
x2 = X2[i, j]
p = clf.decision_function([x1, x2])
Z[i, j] = p[0]
levels = [-1.0, 0.0, 1.0]
linestyles = ['dashed', 'solid', 'dashed']
colors = 'k'
ax = plt.axes()
ax.contour(X1, X2, Z, levels, colors=colors, linestyles=linestyles)
ax.scatter(X[:, 0], X[:, 1], c=Y, cmap=plt.cm.Paired)
ax.axis('tight')
if __name__ == '__main__':
plot_sgd_separator()
plt.show()
感謝您的關注。順便說一句,我使用Python 3.5.1。