我正在尝试了解 python patsy 库中的三次样条生成。据我从输出中可以看出
import numpy as np
from patsy import dmatrix
x = np.linspace(0., 1., 100)
y1 = dmatrix("bs(x, df=6, degree=3, include_intercept=True)", {"x": x})
print(y1)
y2 = dmatrix("bs(x, df=6, degree=3, include_intercept=False)", {"x": x})
print(y2)
(y1
带截距)和y2
(不带截距)是一样的。有什么我想念的吗?谢谢!