数据测试了好几个都没问题,可以就是WA不让过,检测了2个小时还是没发现有什么问题T_T!!求高手看看代码,小弟在此谢谢各位哦! #include <stdio.h> #include <stdlib.h> #define max 1000 /* run this program using the console pauser or add your own getch, system("pause") or input loop */ int main(int
#coding=gbk import nltk import math def entropy(labels): freqdist = nltk.FreqDist(labels) #Frequency Distributions probs = [freqdist.freq(l) for l in freqdist] #freqdist.freq(l) 是将频率转换成概率.即频率除以总个数等于概率 return -sum([p * math.log(p,2) for p in probs]) p
例1 import tensorflow as tf a=tf.Variable(tf.constant(1.0),name='a') b=tf.Variable(tf.constant(1.0),name='b') cost=a+b train_op=tf.train.GradientDescentOptimizer(learning_rate=2).minimize(cost) print(tf.trainable_variables()) with tf.Session() as sess