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SIGMOD
2004
ACM
161views Database» more  SIGMOD 2004»
16 years 7 months ago
Approximation Techniques for Spatial Data
Spatial Database Management Systems (SDBMS), e.g., Geographical Information Systems, that manage spatial objects such as points, lines, and hyper-rectangles, often have very high ...
Abhinandan Das, Johannes Gehrke, Mirek Riedewald
SIGMOD
2004
ACM
160views Database» more  SIGMOD 2004»
16 years 7 months ago
Extending Query Rewriting Techniques for Fine-Grained Access Control
Current day database applications, with large numbers of users, require fine-grained access control mechanisms, at the level of individual tuples, not just entire relations/views,...
Shariq Rizvi, Alberto O. Mendelzon, S. Sudarshan, ...
SIGMOD
2003
ACM
88views Database» more  SIGMOD 2003»
16 years 7 months ago
Mapping Data in Peer-to-Peer Systems: Semantics and Algorithmic Issues
We consider the problem of mapping data in peer-topeer data-sharing systems. Such systems often rely on the use of mapping tables listing pairs of corresponding values to search f...
Anastasios Kementsietsidis, Marcelo Arenas, Ren&ea...
EDBT
2004
ACM
172views Database» more  EDBT 2004»
16 years 7 months ago
Content-Based Routing of Path Queries in Peer-to-Peer Systems
Peer-to-peer (P2P) systems are gaining increasing popularity as a scalable means to share data among a large number of autonomous nodes. In this paper, we consider the case in whic...
Georgia Koloniari, Evaggelia Pitoura
ICIAP
2007
ACM
16 years 7 months ago
Video Biometrics
In this paper we propose multimodal fusion of super resolved texture (SRT) features and 3D shape features with acoustic features for 3D audio-video person authentication systems w...
Rama Chellappa, Gaurav Aggarwal
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