Sciweavers

86 search results - page 3 / 18
» A general framework for improving query processing performan...
Sort
View
WEBI
2010
Springer
13 years 6 months ago
On Using Query Logs for Static Index Pruning
Static index pruning techniques aim at removing from the posting lists of an inverted file the references to documents which are likely to be not relevant for answering user querie...
Hoang Thanh Lam, Raffaele Perego, Fabrizio Silvest...
HPDC
2010
IEEE
13 years 9 months ago
New caching techniques for web search engines
This paper proposes a cache hierarchy that enables Web search engines to efficiently process user queries. The different caches in the hierarchy are used to store pieces of data w...
Mauricio Marín, Veronica Gil Costa, Carlos ...
DOLAP
2000
ACM
14 years 27 days ago
CUBIST: A New Algorithm For Improving the Performance of Ad-hoc OLAP Queries
Being able to efficiently answer arbitrary OLAP queries that aggregate along any combination of dimensions over numerical and categorical attributes has been a continued, major co...
Lixin Fu, Joachim Hammer
SIGMOD
2002
ACM
198views Database» more  SIGMOD 2002»
14 years 8 months ago
Processing complex aggregate queries over data streams
Recent years have witnessed an increasing interest in designing algorithms for querying and analyzing streaming data (i.e., data that is seen only once in a fixed order) with only...
Alin Dobra, Minos N. Garofalakis, Johannes Gehrke,...
TKDE
2008
378views more  TKDE 2008»
13 years 8 months ago
Modeling Image Data for Effective Indexing and Retrieval in Large General Image Databases
In this paper, we propose an image semantic model based on the knowledge and criteria in the field of linguistics and taxonomy. Our work bridges the "semantic gap" by sea...
Xiaoyan Li, Lidan Shou, Gang Chen, Tianlei Hu, Jin...