sklearn datasets数据集

实用例子

from sklearn import datasets
import matplotlib.pyplot as plt
#


# 簇
# x, y = datasets.make_blobs(n_samples=1000, n_features=4, centers=4, cluster_std=0.8)
# plt.scatter(x[:, 0], x[:, 1], s=8, c=y)
# plt.show()

# 同心园
# x, y = datasets.make_circles(n_samples=5000, noise=0.04, factor=0.4)
# plt.scatter(x[:, 0], x[:, 1], s=8, c=y)
# plt.show()

# 月牙
x, y = datasets.make_moons(n_samples=10000,  noise=0.01)
plt.scatter(x[:, 0], x[:, 1], s=8, c=y)
plt.show()