Where could we go? Recommendations for groups in location-based social networks

Frederick Ayala-Gomez, Bálint Daróczy, Michael Mathioudakis, András Benczúr, Aristides Gionis

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

17 Citations (Scopus)
182 Downloads (Pure)


Location-Based Social Networks (LBSNs) enable their users to share with their friends the places they go to and whom they go with. Additionally, they provide users with recommendations for Points of Interest (POI) they have not visited before. This functionality is of great importance for users of LBSNs, as it allows them to discover interesting places in populous cities that are not easy to explore. For this reason, previous research has focused on providing recommendations to LBSN users. Nevertheless, while most existing work focuses on recommendations for individual users, techniques to provide recommendations to groups of users are scarce. In this paper, we consider the problem of recommending a list of POIs to a group of users in the areas that the group frequents. Our data consist of activity on Swarm, a social networking app by Foursquare, and our results demonstrate that our proposed Geo-Group-Recommender (GGR), a class of hybrid recommender systems that combine the group geographical preferences using Kernel Density Estimation, category and location features and group check-ins outperform a large number of other recommender systems. Moreover, we find evidence that user preferences differ both in venue category and in location between individual and group activities. We also show that combining individual recommendations using group aggregation strategies is not as good as building a profile for a group. Our experiments show that (GGR) outperforms the baselines in terms of precision and recall at different cutoffs.

Original languageEnglish
Title of host publicationWebSci 2017 - Proceedings of the 2017 ACM Web Science Conference
Number of pages10
ISBN (Electronic)9781450348966
Publication statusPublished - 25 Jun 2017
MoE publication typeA4 Conference publication
EventACM Web Science Conference - Troy, United States
Duration: 25 Jun 201728 Jun 2017
Conference number: 9


ConferenceACM Web Science Conference
Abbreviated titleWebSci
Country/TerritoryUnited States


  • Group recommendation
  • Location-based social networks
  • Recommender systems


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