Institutional Repository
Technical University of Crete
Technical University of Crete
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| URI: | http://purl.tuc.gr/dl/dias/4EF9BEF7-343B-48DB-9EEA-B99A90AB3B7D | ||
| Year | 2018 | ||
| Type of Item | Peer-Reviewed Journal Publication | ||
| License |
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| Bibliographic Citation | G. Tsakalakis and P. Koutsakis, "Improved user similarity computation for finding friends in your location," Hum. Cent. Comput. Inf. Sci., vol. 8, no. 1, Dec. 2018. doi: 10.1186/s13673-018-0160-7 https://doi.org/10.1186/s13673-018-0160-7 | ||
| Appears in Collections |
Recommender systems are most often used to predict possible ratings that a user would assign to items, in order to find and propose items of possible interest to each user. In our work, we are interested in a system that will analyze user preferences in order to find and connect people with common interests that happen to be in the same geographical area, i.e., a “friend” recommendation system. We present and propose an algorithm, Egosimilar+, which is shown to achieve superior performance against a number of well-known similarity computation methods from the literature. The algorithm adapts ideas and techniques from the recommender systems literature and the skyline queries literature and combines them with our own ideas on the importance and utilization of item popularity.
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