Google news personalization: scalable online collaborative filtering

Several approaches to collaborative filtering have been studied but seldom have studies been reported for large (several million users and items) and dynamic (the underlying item set is continually changing) settings. In this paper we describe our approach to collaborative filtering for generating personalized recommendations for users of Google News. We generate recommendations using three approaches: collaborative filtering using MinHash clustering, Probabilistic Latent Semantic Indexing (PLSI), and covisitation counts. We combine recommendations from different algorithms using a linear model. Our approach is content agnostic and consequently domain independent, making it easily adaptable for other applications and languages with minimal effort. This paper will describe our algorithms and system setup in detail, and report results of running the recommendations engine on Google News. Categories and Subject Descriptors: H.4.m [Information Systems]: Miscellaneous General Terms: Algori...

• Type: Conference
• Year: 2007
• Where: WWW
• Authors: Abhinandan Das, Mayur Datar, Ashutosh Garg, ShyamSundar Rajaram
• Keywords: Collaborative Filtering, Internet Technology, Latent Semantic Indexing, Several Million Users, WWW 2007