qq654355426的博客

Dimensionality Reduction —降维 预备知识 Data: X=(x1,x2,...,xN)N∗MT=(x1Tx2T...xNT)=(x11x12...x1Mx21x22...x2M...xN1xN2...xNM) X = (x_1,x_2,...,x_N)^T_{N*M} = \left(\begin{matrix} x_1^T\\x_2^T\\...\\ x_N^T\e...

import numpy as np pi = np.array([0.2,0.4,0.4]) B = np.array([[0.5,0.5],[0.4,0.6],[0.7,0.3]]) A = np.array([[0.5,0.2,0.3],[0.3,0.5,0.2],[0.2,0.3,0.5]]) O = np.array([0,1,0,1]) T = 4 class ListNode(o...