Coursera--Deep Learning--吴恩达 深度学习笔记 2017.12.10

2017-12-10 19:27:01

Broadcasting 广播机制广泛用于数据处理。

import numpy as np

A = np.array([[56.0, 0.0, 4.4, 68.0],
              [1.2, 104.0, 52.0, 8.0],
              [1.8, 135.0, 99.0, 0.9]])
             
print(A)

cal = A.sum(axis = 0)
print(cal)

percentage = 100 * A/cal.reshape(1,4)
print(percentage)