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http://dx.doi.org/10.5391/JKIIS.2010.20.4.503

The method for extraction of meaningful places based on behavior information of user  

Lee, Seung-Hoon (성균관대학교 임베디드소프트웨어학과)
Kim, Bo-Keong (성균관대학교 임베디드소프트웨어학과)
Yoon, Tae-Bok (성균관대학교 전자전기컴퓨터공학과)
Lee, Jee-Hyong (성균관대학교 전자전기컴퓨터공학과)
Publication Information
Journal of the Korean Institute of Intelligent Systems / v.20, no.4, 2010 , pp. 503-508 More about this Journal
Abstract
Recently, the advance of mobile devices has made various services possible beyond simple communication. One of services is the predicting the future path of users and providing the most suitable location based service based on the prediction results. Almost of these prediction methods are based on previous path data. Thus, calculating similarities between current location information and the previous trajectories for path prediction is an important operation. The collected trajectory data have a huge amount of location information generally. These information needs the high computational cost for calculating similarities. For reducing computational cost, the meaningful location based trajectory model approaches are proposed. However, most of the previous researches are considering only the physical information such as stay time and the distance for extracting the meaningful locations. Thus, they will probably ignore the characteristics of users for meaningful location extraction. In this paper, we suggest a meaningful location extracting and trajectory simplification approach considering the stay time, distance, and additionally interaction information of user. The method collects the location information using GPS device and interaction information between the user and the others. Using these data, the proposed method defines the proximity of the people who are related with the user. The system extracts the meaningful locations based on the calculated proximities, stay time and distance. Using the selected meaningful locations the trajectories are simplified. For verifying the usability of the proposed method, we collect the behavioral data of smart phone users. Using these data, we measure the suitability of meaningful location extraction method, and the accuracy of prediction approach based on simplified trajectories. Following these result, we confirmed the usability of proposed method.
Keywords
path prediction; meaningful location extraction; location based service; user modeling;
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