Abstract
With the popularity of mobile computing and social media, various kinds of online event-based social network (EBSN) platforms, such as Meetup, Plancast and Whova, are gaining in prominence. A fundamental task of managing EBSN platforms is to recommend suitable social events to potential users according to the following three factors: spatial locations of events and users, attribute similarities between events and users, and friend relationships among users. However, none of the existing approaches considers all the aforementioned influential factors when they recommend users to proper events. Furthermore, the existing recommendation strategies neglect the bottleneck cases of the global recommendation. Thus, it is impossible for the existing recommendation solutions to be fair in real-world scenarios. In this paper, we first formally define the problem of bottleneck-aware social event arrangement (BSEA), which is proven to be NP-hard. To solve the BSEA problem approximately, we devise two greedy heuristic algorithms, Greedy and Random+Greedy, and a local-search-based optimization technique. In particular, the Greedy algorithm is more effective but less efficient than the Random+Greedy algorithm in most cases. Moreover, a variant of the BSEA problem, called the Extended BSEA problem, is studied, and the above solutions can be extended to address this variant easily. Finally, we conduct extensive experiments on real and synthetic datasets which verify the efficiency and effectiveness of our proposed algorithms.
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Acknowledgment
This work is supported in part by the Hong Kong RGC Project N _HKUST637/13, National Grand Fundamental Research 973 Program of China under Grant 2014CB340304, National Science Foundation of China (NSFC) under Grant No. 61502021, 61532004, 91118008 and 61232018, and Microsoft Research Asia Fellowship 2012.
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Tong, Y., She, J. & Meng, R. Bottleneck-aware arrangement over event-based social networks: the max-min approach. World Wide Web 19, 1151–1177 (2016). https://doi.org/10.1007/s11280-015-0377-6
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DOI: https://doi.org/10.1007/s11280-015-0377-6