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- 764 creator edwin-bonilla.
- 764 creator ehsan-abbasnejad.
- 764 creator joseph-noel.
- 764 creator khoi-nguyen-tran.
- 764 creator lexing-xie.
- 764 creator peter-christen.
- 764 creator scott-sanner.
- 764 type InProceedings.
- 764 label "New Objective Functions for Social Collaborative Filtering".
- 764 sameAs 764.
- 764 abstract "This paper examines the problem of social \emph{collaborative filtering} (CF) to recommend items of interest to users in a social network setting. Unlike standard CF algorithms using relatively simple user and item features, recommendation in social networks poses the more complex problem of learning user preferences from a rich and complex set of user profile and interaction information. Many existing \emph{social CF} methods have extended regularization traditional CF \emph{matrix factorization}, but have overlooked important aspects germane to the social setting. We propose a unified framework for social CF matrix factorization by introducing novel objective functions for training. Our new objective functions have three key features that address main drawbacks of existing approaches: (a) we fully exploit feature-based user similarity, (b) we permit direct learning of user-to-user information diffusion, and (c) we leverage co-preference (dis)agreement between two users to learn restricted areas of common interest. We demonstrate that optimizing the new objectives significantly outperforms a variety of CF and social CF baselines on live user trials in a custom-developed Facebook App involving data collected over two months from over 100 App users and their 34,000+ friends.".
- 764 hasAuthorList authorList.
- 764 isPartOf proceedings.
- 764 keyword "collaborative filtering".
- 764 keyword "matrix factorization".
- 764 keyword "social networks".
- 764 title "New Objective Functions for Social Collaborative Filtering".