Exploiting indoor location and mobile information for context-awareness service

Hyun-Yong Noh, Jin-Hyung Lee, Sae-Won Oh, Keum-Sung Hwang, Sung-Bae Cho
2012 Information Processing & Management  
Personal mobile devices such as cellular phones, smart phones and PMPs have advanced incredibly in the past decade. The mobile technologies make research on the life log and user-context awareness feasible. In other words, sensors in mobile devices can collect the variety of user's information, and various works have been conducted using that information. Most of works used a user's location information as the most useful clue to recognize the user context. However, the location information in
more » ... he conventional works usually depends on a GPS receiver that has limited function, because it cannot localize a person in a building and thus lowers the performance of the user-context awareness. This paper develops a system to solve such problems and to infer a user's hidden information more accurately using Bayesian network and indoor-location information. Also, this paper presents a new technique for localization in a building using a decision tree and signals for the Wireless LAN because the decision tree has many advantages which outweigh other localization techniques.
doi:10.1016/j.ipm.2011.02.005 fatcat:w3xg66csirgkhlcvzceuh5jh4a