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机器学习——激活函数理解
激活函数 作用: 如果不用激励函数(其实相当于激励函数是f(x) = x),在这种情况下你每一层节点的输入都是上层输出的线性函数,输出都是输入的线性组合,与没有隐藏层效果相当。 2线性的表达能力太有限了,即使经过多层网络的叠加,y=ax+b无论叠加多少层最后仍然是线性的,增加网络的深度根本没有意义。 ...
分类:其他好文   时间:2019-11-25 11:33:52    阅读次数:94
java链接oracle数据库
1 package csu.lys.com; 2 3 import java.sql.Connection; 4 import java.sql.DriverManager; 5 import java.sql.ResultSet; 6 import java.sql.SQLException; 7 ...
分类:数据库   时间:2019-11-23 21:55:08    阅读次数:70
【HDOJ5447】Good Numbers(数论)
题意: 思路:From https://blog.csdn.net/qq_36553623/article/details/76683438 大概就是把1e6里面的质因子能除的都除光之后借助两者gcd中有最大质因子的条件分类讨论 其实也就5类,重点是如何设分类的标准,其实唯一的标准就是对答案的贡献 ...
分类:其他好文   时间:2019-11-22 23:43:04    阅读次数:97
graduate from
She said her first word at 7 months old. Emlie graduated from a really good unviersity. I was married in 1983. that's when I became an adult. Her husb ...
分类:其他好文   时间:2019-11-21 20:11:21    阅读次数:84
Writing service
So, it is most likely the most crucial portion of the years spent researching for a college degree. You may be good at writing, hunting information, a ...
分类:其他好文   时间:2019-11-14 22:15:13    阅读次数:94
Codeforces Round #599 (Div. 2) C. Tile Painting
Ujan has been lazy lately, but now has decided to bring his yard to good shape. First, he decided to paint the path from his house to the gate. The pa ...
分类:其他好文   时间:2019-11-10 11:44:17    阅读次数:73
D21_3.1匹配分组
# ### 正则表达式 => 匹配分组 # 把想要匹配的内容,用小圆括号包起来,表达分组,并且会优先显示(优先显示就是只显示它)print(re.findall('(.*?)_good','wusir_good alex_good secret男_good'))# ?: 取消括号优先显示的功能pri ...
分类:其他好文   时间:2019-11-09 19:29:47    阅读次数:88
C. Tile Painting (定理:任意一个合数都能够写成两个质数的乘积) 《Codeforces Round #599 (Div. 2) 》
Ujan has been lazy lately, but now has decided to bring his yard to good shape. First, he decided to paint the path from his house to the gate. The pa ...
分类:其他好文   时间:2019-11-09 00:25:44    阅读次数:99
CF1245 A. Good ol' Numbers Coloring(java与gcd)
题意:给定数字A和数字B,问是否满足gcd(A,B)==1。 思路:可以直接写函数gcd。也可以用大数自带的gcd功能。 代码1: /* @author nimphy @create 2019-11-06-12:07 about: */ import java.io.*; import java.u ...
分类:编程语言   时间:2019-11-06 13:09:49    阅读次数:87
codeforces - 1245 (div2)
A - Good ol' Numbers Coloring 直接判断两个数是否互质 #include <stdio.h> #include <iostream> #include <cstring> #include <algorithm> #include <cmath> #include <qu ...
分类:其他好文   时间:2019-11-05 17:02:02    阅读次数:110
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