系统设计:预防/检测投票欺诈 [英] System design: Preventing/detecting vote fraud

问题描述

鉴于最近发生的投票欺诈事件，我想知道是否任何人都熟悉构建系统以防止或检测不良投票行为.我想这项技术广泛用于搜索引擎、在线广告(例如点击欺诈)和社区网站(例如 Digg、reddit)，但令人惊讶的是，由于显而易见的原因，很少公开.

In light of the recent vote fraud incident here, I was wondering if anyone out there is familiar with building systems for preventing or detecting undesirable voting behavior. I imagine the technology is widely used in search engines, online advertising (e.g. click fraud), and community sites (e.g. Digg, reddit), but surprisingly little is made public for obvious reasons.

所以这是我的问题:考虑到复杂性和用户体验，您将如何设计这样一个系统?是否有一些学术研究领域对此进行了研究?

PS:这不是关于欺诈检测机制或您最近在这里的个人经历的问题；为此，请参阅其他问题.>

PS: This is not a question about the fraud detection mechanism or your recent personal experience here; for that please see this other question.

推荐答案

关于投票系统的文献有很多，并且可以应用一些博弈论.困难的问题在于它本质上是概率性的.您选择某些模式来表明可能欺诈，并检测或排除它们；通过这样做，您还排除了某人出于无辜或至少非欺诈性原因以这种方式投票的可能性.

There is a whole lot in the literature on voting systems, and a good bit of game theory can be applied. The issue that's difficult is that it's inherently probabilistic; you pick certain patterns as indicating probable fraud, and detect or exclude them; by doing so, you also exclude the possibility that someone is voting that way for innocent, or at least non-fraudulent reasons.

考虑一下，例如，有人读了我不死的散文，对我产生了一种瞬间的迷恋，并在我所有的答案中投票赞成.我有 30 多个答案，所以需要几天时间.现在，假设，这不是我的名誉妓女，这是一个出于自己的原因，无论多么不明智，一次将所有投票都投给我几天的人.

Consider, eg, someone who reads my deathless prose, develops an instant man-crush on me, and goes through all my answers voting each one up. I've got more than 30 answers so it would take a few days. Now, by assumption, this isn't my reputation-whoring sock-puppet, it's a person who for their own reasons, however unwise, has devoting all their voting to me for days at a time.

这是欺诈吗?不会，但会被检测为欺诈，并可能被视为欺诈.

Is this fraud? No, but it would be detected as, and probably treated as, fraud.

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