Semantic Bob-tree
Thu Le Thi Bao, Tran Khanh Dang · 2012
The problem of preserving user's privacy in Location Based Services (LBS) has been researched increasingly. One of the techniques is obfuscation which preserves location privacy by degrading the quality of user's location information. But the less exact information, the more secure and the less effective services and most of the techniques are separated from database level. In this paper, we introduce a new approach to protect location privacy at database level, called Semantic Bob-tree, an index structure contains semantic aware information in its nodes. It can achieve high level of privacy and keep up the quality of services.