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导语活动做不好会伤用户，伤产品。很多人以为活动能让产品收入突飞猛进，很多人以为活动能弥补产品的缺陷。其实活动不是解决方案，只是止痛药。他解决不了根本的问题，只能减少疼痛而已。而有时候，药方子开错了，会让伤口更疼！所以有时候不做活动反而更好！┃七宗罪之一：给太多奖励给少了，玩家会骂你抠门。奖励给多了，... 阅读全文
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Statistical approaches to randomised controlled trial analysisThe statistical approach used in the design and analysis of the vast majority of clinica... 阅读全文
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Today is a good day to start parallelizing your code. I’ve been using the parallel package since its integration with R (v. 2.14.0) and its much easie... 阅读全文