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GIS
2007
ACM
16 years 7 months ago
Approximate order-k Voronoi cells over positional streams
Handling streams of positional updates from numerous moving objects has become a challenging task for many monitoring applications. Several algorithms have been recently proposed ...
Kostas Patroumpas, Theofanis Minogiannis, Timos K....
SIGMOD
1999
ACM
143views Database» more  SIGMOD 1999»
15 years 10 months ago
WALRUS: A Similarity Retrieval Algorithm for Image Databases
Traditional approaches for content-based image querying typically compute a single signature for each image based on color histograms, texture, wavelet transforms etc., and return...
Apostol Natsev, Rajeev Rastogi, Kyuseok Shim
SIGIR
2009
ACM
16 years 23 days ago
Compressing term positions in web indexes
Large search engines process thousands of queries per second on billions of pages, making query processing a major factor in their operating costs. This has led to a lot of resear...
Hao Yan, Shuai Ding, Torsten Suel
CIKM
2009
Springer
16 years 26 days ago
A machine learning approach for improved BM25 retrieval
Despite the widespread use of BM25, there have been few studies examining its effectiveness on a document description over single and multiple field combinations. We determine t...
Krysta Marie Svore, Christopher J. C. Burges
TSD
2001
Springer
15 years 10 months ago
Determining User Interface Semantics Using Communicating Agents
The Internet offers remote access to many information systems to users independent of time and location. This paper describes an agent based approach to deal with issues that rise ...
L. Ton, Léon J. M. Rothkrantz