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ICPR
2010
IEEE
15 years 10 months ago
Improving the Efficiency of Content-Based Multimedia Exploration
Visual exploration systems enable users to search, browse, and explore voluminous multimedia databases in an interactive and playful manner. Whether users know the database's ...
Christian Beecks, Sascha Wiedenfeld, Thomas Seidl
BNCOD
2007
151views Database» more  BNCOD 2007»
15 years 8 months ago
Compressed Materialised Views of Semi-Structured Data
Query performance issues over semi-structured data have led to the emergence of materialised XML views as a means of restricting the data structure processed by a query. However p...
Richard Gourlay, Brian Tripney, John N. Wilson
172
Voted
SIGMOD
2010
ACM
154views Database» more  SIGMOD 2010»
15 years 6 months ago
Unbiased estimation of size and other aggregates over hidden web databases
Many websites provide restrictive form-like interfaces which allow users to execute search queries on the underlying hidden databases. In this paper, we consider the problem of es...
Arjun Dasgupta, Xin Jin, Bradley Jewell, Nan Zhang...
VLDB
2002
ACM
108views Database» more  VLDB 2002»
15 years 6 months ago
Adaptive Index Structures
Traditional indexes aim at optimizing the node accesses during query processing, which, however, does not necessarily minimize the total cost due to the possibly large number of r...
Yufei Tao, Dimitris Papadias
SAC
2008
ACM
15 years 6 months ago
Trajectory retrieval with latent semantic analysis
The problem of trajectory similarity has been recently attracted research interest considerably, due to its importance in diverse fields. In this work, we study trajectory similar...
Apostolos N. Papadopoulos