流行的算法 [英] Popularity algorithm

问题描述

在SO 18乔尔提到，将排名根据他们的年龄和普及项目的算法，它是基于重力。可能有人张贴此？ C＃是可爱的，但实际上任何语言（当然，我不能这样做LISP）就可以了。

On SO 18 Joel mentioned an algorithm that would rank items based on their age and popularity and it's based on gravity. Could someone post this? C# would be lovely, but really any language (well, I can't do LISP) would be fine.

推荐答案

我的理解是，它是大约从另一个<一以下href="http://stackoverflow.com/questions/24066/what-formula-should-be-used-to-determine-hot-questions"相对=nofollow>杰夫阿特伍德交

My understanding is that it is approximately the following from another Jeff Atwood post

t = (time of entry post) - (Dec 8, 2005)
x = upvotes - downvotes

y = {1 if x > 0, 0 if x = 0, -1 if x < 0)
z = {1 if x < 1, otherwise x}

log(z) + (y * t)/45000

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