Abstract
Due to the prevalence of human activity in urban space, recommending ROIs (region-of-interest) to users becomes an important task in social networks. The fundamental problem is how to aggregate users’ preferences over POIs (point-of-interest) to infer the users’ region-level mobility patterns. We emphasize two facts in this paper: (1) there simultaneously exists ROI-level and POI-level implicitness that blurs the users’ underlying preferences; and (2) individual POIs should have non-uniform weights and more importantly, the weights should vary across different users. To address these issues, we contribute a novel solution, namely GANR\(^2\) (Graph Attentive Neural Network for Region Recommendation), based on the recent development of attention network and Neural Graph Collaborative Filtering (NGCF). Specifically, to learn the user preferences over ROIs, we provide a principled neural network model equipped with two attention modules: the POI-level attention module, to select informative POIs of one ROI, and the ROI-level attention module, to learn the ROI preferences. Moreover, we learn the interactions between users and ROIs under the NGCF framework. Extensive experiments on two real-world datasets demonstrate the effectiveness of the proposed framework.
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Acknowledgements
This work was supported in part by the National Natural Science Foundation of China under Grant No. 61772288, U1636116, 11431006, the Natural Science Foundation of Tianjin City under Grant No. 18JCZDJC30900, the Research Fund for International Young Scientists under Grant No. 61750110530, and the Ministry of education of Humanities and Social Science project under grant 16YJC790123.
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Xu, H., Wei, J., Yang, Z., Wang, J. (2020). Graph Attentive Network for Region Recommendation with POI- and ROI-Level Attention. In: Wang, X., Zhang, R., Lee, YK., Sun, L., Moon, YS. (eds) Web and Big Data. APWeb-WAIM 2020. Lecture Notes in Computer Science(), vol 12317. Springer, Cham. https://doi.org/10.1007/978-3-030-60259-8_37
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