283 search results - page 21 / 57 » A study of the effect of term proximity on query expansion |
TREC
2004
13 years 9 months ago
2004
The quality of an information retrieval system heavily depends on its retrieval function, which returns a similarity measurement between the query and each document in the collect...
CIKM
2005
Springer
14 years 1 months ago
2005
Springer
Modern query optimizers select an efficient join ordering for a physical execution plan based essentially on the average join selectivity factors among the referenced tables. In ...
ADBIS
2007
Springer
13 years 11 months ago
2007
Springer
Existing work repeatedly addresses that the ubiquitous positioning devices will start to generate an unprecedented stream of time-stamped positions leading to storage and computati...
ICDCS
2007
IEEE
13 years 11 months ago
2007
IEEE
This paper presents GeoGrid, a geographical location service overlay network system, for providing scalable location-based services to a large and growing number of mobile users. ...
WWW
2006
ACM
14 years 8 months ago
2006
ACM
We introduce the notion of query substitution, that is, generating a new query to replace a user's original search query. Our technique uses modifications based on typical su...