Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach

Details Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach

2011-09-04

arxiv.org/abs/1109.0758v1

Computer Science

Social and Information Networks

Scientific paper

In this paper, we propose a probabilistic generative model, called unified model, which naturally unifies the ideas of social influence, collaborative filtering and content-based methods for item recommendation. To address the issue of hidden social influence, we devise new algorithms to learn the model parameters of our proposal based on expectation maximization (EM). In addition to a single-machine version of our EM algorithm, we further devise a parallelized implementation on the Map-Reduce framework to process two large-scale datasets we collect. Moreover, we show that the social influence obtained from our generative models can be used for group recommendation. Finally, we conduct comprehensive experiments using the datasets crawled from last.fm and whrrl.com to validate our ideas. Experimental results show that the generative models with social influence significantly outperform those without incorporating social influence. The unified generative model proposed in this paper obtains the best performance. Moreover, our study on social influence finds that users in whrrl.com are more likely to get influenced by friends than those in last.fm. The experimental results also confirm that our social influence based group recommendation algorithm outperforms the state-of-the-art algorithms for group recommendation.

Affiliated with

Also associated with

No associations

Rating

Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Exploring Social Influence for Recommendation - A Probabilistic Generative Model Approach will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-448777