2015 GeoSAGEAGeographicalSparseAddit
- (Wang et al., 2015) ⇒ Weiqing Wang, Hongzhi Yin, Ling Chen, Yizhou Sun, Shazia Sadiq, and Xiaofang Zhou. (2015). “Geo-SAGE: A Geographical Sparse Additive Generative Model for Spatial Item Recommendation.” In: Proceedings of the 21st ACM SIGKDD International Conference on Knowledge Discovery and Data Mining (KDD-2015). ISBN:978-1-4503-3664-2 doi:10.1145/2783258.2783335
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Cited By
- http://scholar.google.com/scholar?q=%222015%22+Geo-SAGE%3A+A+Geographical+Sparse+Additive+Generative+Model+for+Spatial+Item+Recommendation
- http://dl.acm.org/citation.cfm?id=2783258.2783335&preflayout=flat#citedby
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Author Keywords
- Cold start; information search and retrieval; location-based service; recommender system; sparse additive model; spatial pyramid
Abstract
With the rapid development of location-based social networks (LBSNs), spatial item recommendation has become an important means to help people discover attractive and interesting venues and events, especially when users travel out of town. However, this recommendation is very challenging compared to the traditional recommender systems. A user can visit only a limited number of spatial items, leading to a very sparse user-item matrix. Most of the items visited by a user are located within a short distance from where he / she lives, which makes it hard to recommend items when the user travels to a far away place. Moreover, user interests and behavior patterns may vary dramatically across different geographical regions. In light of this, we propose Geo-SAGE, a geographical sparse additive generative model for spatial item recommendation in this paper. Geo-SAGE considers both user personal interests and the preference of the crowd in the target region, by exploiting both the co-occurrence pattern of spatial items and the content of spatial items. To further alleviate the data sparsity issue, Geo-SAGE exploits the geographical correlation by smoothing the crowd's preferences over a well-designed spatial index structure called spatial pyramid. We conduct extensive experiments and the experimental results clearly demonstrate our Geo-SAGE model outperforms the state-of-the-art.
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Author | volume | Date Value | title | type | journal | titleUrl | doi | note | year | |
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2015 GeoSAGEAGeographicalSparseAddit | Yizhou Sun Hongzhi Yin Ling Chen Weiqing Wang Shazia Sadiq Xiaofang Zhou | Geo-SAGE: A Geographical Sparse Additive Generative Model for Spatial Item Recommendation | 10.1145/2783258.2783335 | 2015 |