Using Skyline Query and Information Retrieval for Implicit Location and Preference Based Recommendation

Location and preference based recommendation could provide mobile user with his personalized interesting information. Mobile user does not always provide all attributes of his preference or query, especially when he is moving. The recommendation system database also does not contain all attributes of user's needs. In order to provide possible interesting places when a user is moving, only according to his implicit preference and physical moving location without his providing preference or query explicitly, we proposed two circle concepts, one is physical position circle and the other is virtual preference circle. Those skyline query places in physical position circle which also match mobile user's implicit preference in virtual preference circle will be recommended. User's implicit preference will be estimated under language modeling framework according to user's historical visiting behaviors. Experiments show that our method that the combination of using skyline query and information retrieval to do an implicit location and preference based recommendation without user's providing explicit preference or query is effective for mobile users.