Context Awareness in Mobile Systems

摘要: Context represents any information that can be used to characterize the situation of an entity. An entity is a person, place, or object considered relevant interaction between user and application, including application themselves. The ubiquity mobile devices (e.g., smartphones, GPS devices) has in part motivated use contextual modern applications. From one perspective, context systems fall into three categories: (a) includes personal attributes user, e.g., spatial location budget; (b) point-of-interest (POI) context, restaurant location, operating time, rating; (c) environmental weather road conditions. Incorporating such applications provided users may significantly enhance quality service terms finding more related answers. This chapter first gives brief overview awareness systems. It then discusses different ways expressing within services. later describes main examples take advantage various contexts, namely, social news feed, microblogging Twitter) recommendation finally presents generic method incorporates preference database systems—which serve as backbone for context-aware