GIS

Location-Based Social Networks (LBSNs), such as Foursquare, Yelp and Facebook Place, have attracted many people, including business owners who use LBSNs to promote their businesses. A physical location is called a venue or a place of interest in an ...

With the availability and rapid development of GPS-enabled mobile devices and the positioning technology, the Location-Based Services (LBS), aiming at providing customized services according to users' spatio-temporal location information, become ...

The research presented in this paper develops a novel approach for a risk-based authentication system that takes into account mobile user movement patterns. Inspired by the concept of Shannon's information theory, we introduce a variant version of ...

Location-based systems (LBS) represent an emerging genre of applications that exploit positioning technologies and facilitate a wide range of location-based services. Unlike conventional information systems, LBS data management is challenging because ...

We argue that current technical and legal attempts aimed at protecting Geoprivacy are insufficient. We propose a novel 2-dimensional model of privacy, which we term "civilized cyberspace". On one dimension there are engineering, social and legal tools ...

Protecting patient geo-privacy while allowing for valid geographic analyses of the data is a major challenge [1]. As a consequence, a variety of methods have been introduced to mask patients' locational information, also called geo-masking methods [2]. ...

Quantity Based Aggregation (QBA) is a subject that is closely related to inference in databases. The goal is to enforce k out of N disclosure control. In this paper we work on QBA problems in the context of cadastral databases, and we focus on one ...