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我試圖理解python庫中的三次樣條生成。據我可以從python patsy三次樣條截距項
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的（具有截距）和y2輸出（無截距）看是相同的。有什麼我失蹤？謝謝！