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http://dx.doi.org/10.12672/ksis.2012.20.4.093

K-Anonymity using Hierarchical Structure in Indoor Space  

Kim, Joon-Seok (부산대학교 컴퓨터공학과)
Li, Ki-Joune (부산대학교 컴퓨터공학과)
Publication Information
Spatial Information Research / v.20, no.4, 2012 , pp. 93-101 More about this Journal
Abstract
Due to complexity of indoor space, the demand of Location Based Services (LBS) in indoor space is increasing as well as outdoor. However, it includes privacy problems of exposing personal location. Location K-anonymity technology is a method to solve the privacy problems with cloaking their locations by Anonymized Spatial Region(ASR). It guarantees K users within a region containing the location of a given user. However previous researches have dealt the problems based on Euclidean distance in outdoor space, and cannot be applied in indoor space where there are constraints of movement such as walls. For this reason, we propose in this paper a K-anonymity for cloaking indoor location in consideration of structures and representation of indoor space. The basic concept of our approach is to introduce a hierarchical structure as ASR for including K-1 users for cloaking their locations. We also proposed a cost model by K and attributes of hierarchical structure to analyze the performance of the method.
Keywords
Indoor Space; K-Anonymity; Hierarchical Structure;
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