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python与java split的不同

2014-01-25 12:02 by briller, 238 阅读, 收藏,
摘要: python:text = "GET /report.gif?code=_qualityPluginLoaded&app=click&cid=fengyun_0000000001_1342934731354&host=soft.yuyu.com&rd=0.580433264374733 HTTP/1.1"args=text.split(' ',1)print args['GET', '/report.gif?code=_qualityPluginLoaded&app=click&cid= 阅读全文

R语言学习笔记

2015-07-16 13:00 by briller, 230 阅读, 收藏,
摘要: 如何对dataframe做group by ,需要使用data.frame table等等http://stackoverflow.com/questions/25293045/count-number-of-rows-in-a-data-frame-in-r-based-on-groupmydf#... 阅读全文

共轭梯度法简介

2014-09-16 19:17 by briller, 220 阅读, 收藏,
摘要: http://www.cnblogs.com/yangxi/archive/2011/10/20/2219408.htmlspark 在求非负最小二乘矩阵时好像用到了 阅读全文

遇到的hive问题,fixed in 0.12

2014-04-10 21:39 by briller, 215 阅读, 收藏,
摘要: https://issues.apache.org/jira/browse/HIVE-5085一个hiveserver2的客户端 pyhs2需要安装libsasl2-dev 阅读全文

mongo 索引问题

2014-06-24 18:15 by briller, 211 阅读, 收藏,
摘要: http://wenku.baidu.com/link?url=WeLb5kFFlWXmsi3jRY8D3cd7wh0QmSQokueslk4Pi1BcSre69TUP6D7gD9OVNNrBBrhZE5HAD6-63YQ59xyHyIbVsFxmWmnnY0wz3Xmfh4S增加了appVersi... 阅读全文