The Credibility of Posted Information in a Recommender System Based on a Map

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  • 地図上の情報推薦システムにおける投稿情報の信頼度
  • チズ ジョウ ノ ジョウホウ スイセン システム ニ オケル トウコウ ジョウホウ ノ シンライド

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Abstract

In this paper, we propose a method for estimating the credibility of the posted information from users. We incorporate this method in a system which recommends the route and destination using other user's posted information. Users can post information, and other users can refer to them. These information includes a picture, comment, genre, expiration date, and so on. The system displays these information on the map. Since posted information can include subjective information from various perspectives, we can't trust all of the postings as they are. We propose and integrate two factors of credibility of posted information. First, credibility of voting by other users is determined based on the posting user's own credibility and other users' credibility who approved or disapproved her/his posting information. The other is credibility of geographic posting tendency of the users. This credibility is determined based on dispersion of posted information on the map. From experimental results, we concluded our method measures credibility of posted information validly.

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