我有一个系统，人们可以投票向上或向下投一个项目，我想显示的结果为5星评级。

I have a system where people can up vote or down vote an item and I want to display the results of that as a 5 star rating.

我一直在尝试使用贝叶斯评分算法在这里解释 和此处没有成功。

I have been trying use the Bayesian Rating algorithm explained here and here with no success.

例如：我在数据库中有三个项目（A，B和C）：

For example: I have three items (A, B and C) in my database:

A = 500向上和向下500票 B = 0 UP和1000向下票 C = 0向上和向下1000票

A = 500 UP and 500 down votes B = 0 UP and 1000 down votes C = 0 UP and 1000 down votes

我如何计算贝叶斯平均得分为每一个项目，使其具有的规模为1分至5？

How do i calculate the Bayesian average rating for each item so that it has a score on a scale of 1 to 5?

推荐答案

本博客文章，的如何不至按平均评分，准确地描述你的情况，以及如何使用威尔逊解决呢分数置信区间。书签交易用这个效果良好。

This blog post, How Not To Sort By Average Rating, describes exactly your situation, and how to solve it using a Wilson Score confidence interval. Reddit used this to good effect.