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» Supporting location-based approximate-keyword queries
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MDM
2007
Springer
136views Communications» more  MDM 2007»
13 years 9 months ago
iPDA: Supporting Privacy-Preserving Location-Based Mobile Services
This demonstration presents iPDA, a system to support privacy-preserving data access in location-based mobile services. The iPDA system consists of three main components: 1) a mob...
Jing Du, Jianliang Xu, Xueyan Tang, Haibo Hu
ICDE
2009
IEEE
165views Database» more  ICDE 2009»
14 years 5 months ago
Expressive Location-Based Continuous Query Evaluation with Binary Decision Diagrams
Many location-based services require rich and expressive query language support for filtering large amounts of information. In prominent location-based services thousands of conti...
Zhengdao Xu, Hans-Arno Jacobsen
W2GIS
2005
Springer
13 years 9 months ago
Towards a Taxonomy of Location Based Services
Location-based services (LBS) constitute an emerging application domain involving spatio-temporal databases. In this paper, i) we propose a classification of LBS, depending on whet...
Kostas Gratsias, Elias Frentzos, Vasilis Delis, Ya...
SIGMOD
2008
ACM
210views Database» more  SIGMOD 2008»
14 years 3 months ago
Private queries in location based services: anonymizers are not necessary
Mobile devices equipped with positioning capabilities (e.g., GPS) can ask location-dependent queries to Location Based Services (LBS). To protect privacy, the user location must n...
Gabriel Ghinita, Panos Kalnis, Ali Khoshgozaran, C...
SSD
2009
Springer
193views Database» more  SSD 2009»
13 years 10 months ago
Query Integrity Assurance of Location-Based Services Accessing Outsourced Spatial Databases
Outsourcing data to third party data providers is becoming a common practice for data owners to avoid the cost of managing and maintaining databases. Meanwhile, due to the populari...
Wei-Shinn Ku, Ling Hu, Cyrus Shahabi, Haixun Wang