Introduction to Recommender Sys Part I (static)

Data types:

1. Explict

2. Implict

Difference between recommender and prediction: 推荐系统建议你可能感兴趣的东西(top n interested)，而预测则预测用户对东西的喜好程度。

TOP-N + Softer/Organic Presentation (推荐系统采用一种软性广告的形式获得信任)

Wilson score interval 被用来计算评价的置信度/score

http://en.wikipedia.org/wiki/Binomial_proportion_confidence_interval#Wilson_score_interval

How to rank:

1. http://amix.dk/blog/post/19574

2. http://amix.dk/blog/post/19588

3. https://possiblywrong.wordpress.com/2011/06/05/reddits-comment-ranking-algorithm/

4. http://www.evanmiller.org/how-not-to-sort-by-average-rating.html
   

Introduction to Recommender Sys Part I (static)

原文：http://my.oschina.net/edwardpku/blog/406105