339 search results - page 4 / 68 » Improved Query Performance with Variant Indexes |
GIS
2005
ACM
14 years 6 months ago
2005
ACM
The R*-tree, as a state-of-the-art spatial index, has already found its way into commercial systems like Oracle. In this paper, we aim at improving query performance of the R*tree...
CORR
1998
Springer
13 years 5 months ago
1998
Springer
The classical, vector space model for text retrieval is shown to give better results (up to 29% better in our experiments) if WordNet synsets are chosen as the indexing space, ins...
PVLDB
2010
13 years 4 months ago
2010
The current widespread use of location-based services and GPS technologies has revived interest in very fast and scalable shortest path queries. We introduce a new shortest path q...
WWW
2008
ACM
14 years 6 months ago
2008
ACM
Due to the rapid growth in the size of the web, web search engines are facing enormous performance challenges. The larger engines in particular have to be able to process tens of ...
CIKM
2001
Springer
13 years 10 months ago
2001
Springer
Vocabulary incompatibilities arise when the terms used to index a document collection are largely unknown, or at least not well-known to the users who eventually search the collec...