决策树实现的基本原理

import numpy as np import pandas as pdweb df = pd.read_csv(‘dtree.csv’) #刮风的6,3个出去玩,不刮风8,6个出去玩 play_windy_y = 3/6 play_windy_n = 3/6 #a是熵刮风的熵 a = (play_windy_nnp.log2(play_windy_n) + play_windy_ynp.lo

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