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1294 - Positive Negative Sign   PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Given two integers: n and m and n is divisible by 2m, you have to write down the first n natural numbers in the following form. At first take f…

1294 - Positive Negative Sign   PDF (English) Statistics Forum Time Limit: 2 second(s) Memory Limit: 32 MB Given two integers: n and m and n is divisible by 2m, you have to write down the first n natural numbers in the following form. At first take f…

智课雅思短语---二.exert positive/ negative effects on… 一.总结 一句话总结:对…产生有利/不利的影响 1.the advantages far outweigh the disadvantages.? 利远远大于弊 2.lead to/ give rise to/ contribute to/ result in? 导致,引起 3.a complicated social phenomenon? 复杂的社会现象 4.sense of responsibi…

http://www.vaikan.com/regular-expression-to-match-string-not-containing-a-word/ 经常我们会遇到想找出不包含某个字符串的文本,程序员最容易想到的是在正则表达式里使用, ^(hede) 来过滤”hede”字串,但这种写法是错误的. 我们可以这样写: [^hede] ,但这样的正则表达式完全是另外一个意思,它的意思是字符串里不能包含 ‘h’,‘e’,‘d’三个但字符.那什么样的正则表达式能过滤出不包含完整“hello”字串…

链接: https://vjudge.net/problem/LightOJ-1294 题意: Given two integers: n and m and n is divisible by 2m, you have to write down the first n natural numbers in the following form. At first take first m integers and make their sign negative, then take nex…

Amazon评论数据的预处理代码,用于情感分析,代码改自 https://github.com/PaddlePaddle/Paddle/tree/develop/demo/quick_start/data Amazon商品评论数据网址: http://jmcauley.ucsd.edu/data/amazon/ Bash脚本文件 get_data.sh: #!/bin/bash # 1. size of pos : neg = 1:1. # 2. size of testing set = mi…

sklearn实战-乳腺癌细胞数据挖掘(博客主亲自录制视频教程) https://study.163.com/course/introduction.htm?courseId=1005269003&utm_campaign=commission&utm_source=cp-400000000398149&utm_medium=share   多元共线性 在一个回归方程中,假如两个或两个以上解释变量彼此高度相关,那么回归分析的结果将有可能无法分清每一个变量与因变量之间的真实关系.例如…

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Under the Hood: Building the App Center recommendation engine   As more apps on Facebook Platform have launched over the years, the types of apps available have become more diverse, making it crucial that people see the most relevant and highest qual…