RandSampleMatrix-矩阵乘法实现

1. 随机打乱矩阵的行和列

**************************************************
matrix=
[[ 0  1  2  3  4]
 [ 5  6  7  8  9]
 [10 11 12 13 14]
 [15 16 17 18 19]]
row_list=[3 1 0 2]
rand_row_matrix=
[[15 16 17 18 19]
 [ 5  6  7  8  9]
 [ 0  1  2  3  4]
 [10 11 12 13 14]]
column_list=[1 2 4 0 3]
rand_column_matrix=
[[ 1.  2.  4.  0.  3.]
 [ 6.  7.  9.  5.  8.]
 [11. 12. 14. 10. 13.]
 [16. 17. 19. 15. 18.]]
**************************************************

2. python 代码

import numpy as np

np.set_printoptions(suppress=True, precision=3)
np.random.seed(2324)


class RandomMatrix(object):
    def __init__(self, in_matrix):
        self.matrix = in_matrix
        self.row, self.column = np.shape(self.matrix)
        self.rand_row_list = np.zeros(self.row)
        self.rand_column_list = np.zeros(self.column)
        self._rand_column_matrix = np.zeros_like(self.matrix)
        self._rand_row_matrix = np.zeros_like(self.matrix)

    @property
    def rand_row_matrix(self):
        my_row_n = self.row
        rand_row = np.random.permutation(my_row_n)
        self.rand_row_list = rand_row
        my_rand_row_matrix = self.matrix[rand_row]
        self._rand_row_matrix = my_rand_row_matrix
        return self._rand_row_matrix

    @property
    def rand_column_matrix(self):
        my_column_n = self.column
        rand_column = np.random.permutation(my_column_n)
        self.rand_column_list = rand_column
        rand_ones = np.eye(my_column_n)[rand_column].T
        my_rand_column_matrix = self.matrix @ rand_ones
        self._rand_column_matrix = my_rand_column_matrix
        return self._rand_column_matrix

    def execute(self):
        ex_matrix = self.matrix
        ex_rand_row_matrix = self.rand_row_matrix
        ex_rand_column_matrix = self.rand_column_matrix