XPC's Notes

Stupid is as stupid does

Twitter的dns记录

April 1, 2012 By xpc

199.59.150.39 twitter.com
199.59.150.39 www.twitter.com
199.59.148.11 assets0.twitter.com
199.59.148.11 assets1.twitter.com
199.59.148.11 static.twitter.com
199.59.148.11 assets2.twitter.com
199.59.148.11 assets3.twitter.com
199.59.150.9 api.twitter.com
199.59.149.137 dev.twitter.com

 

对于GFW,用下面一张图表示我的心情

贝叶斯统计算法

March 5, 2012 By xpc

weighted rank (WR) = (v÷ (v+m))× R +(m ÷(v+m))× C

其中:
R = average for the movie (mean) = (Rating)(是用普通的方法计算出的平均分)
v = number of votes for the movie = (votes) (投票人数)
m = minimum votes required to be listed in the top 250 (currently 1250)
C = the mean vote across the whole report (currently 6.9)

贝叶斯统计算法的好处在于能综合分数和打分次数等信息,给出一个相对合理的排名顺序。IMDB使用这个算法进行排名,其中上述公式中m和c的值为IMDB使用的值。

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