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- W1547510748 abstract "Advances in sensing and tracking technology enable location-based applications but they also create significant privacy risks. Anonymity can provide a high degree of privacy, save service users from dealing with service providers’ privacy policies, and reduce the service providers’ requirements for safeguarding private information. However, guaranteeing anonymous usage of location- based services requires that the precise location information transmitted by a user cannot be easily used to re-identify the subject. This paper presents middleware architecture and algorithms that can be used by a centralized location broker service. The adaptive algorithms adjust the resolution of location information along spatial or temporal dimensions to meet specified anonymity constraints based on the entities that may be using location services within a given area. Using a model based on automotive traffic counts and cartographic material, we estimate the realistically expected spatial resolution for different anonymity constraints. The median resolution generated by our algorithms is 125 meters. Thus, anonymous location-based requests for urban areas would have the same accuracy currently needed for E-911 services; this would provide sufficient resolution for way finding, automated bus routing services and similar location- dependent services." @default.
- W1547510748 created "2016-06-24" @default.
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- W1547510748 date "2012-07-15" @default.
- W1547510748 modified "2023-09-28" @default.
- W1547510748 title "AN EFFICIENT FRAMEWORK FOR NETWORK BASED QUERY PROCESSING IN ROAD NETWORKS" @default.
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