888 search results - page 40 / 178 » Query expansion using associated queries |
163
click to vote
ADBIS
2009
Springer
16 years 18 days ago
2009
Springer
Abstract. We consider the problem of query containment for conjunctive queries with the safe negation property. Some necessary conditions for this problem are given. A part of the ...
159
click to vote
WWW
2011
ACM
15 years 28 days ago
2011
ACM
Query auto completion is known to provide poor predictions of the user’s query when her input prefix is very short (e.g., one or two characters). In this paper we show that con...
159
click to vote
MIDDLEWARE
2009
Springer
16 years 16 days ago
2009
Springer
Abstract. Pervasive computing applications often entail continuous monitoring tasks, issuing persistent queries that return continuously updated views of the operational environmen...
186
click to vote
TREC
2004
15 years 7 months ago
2004
Our experiments in the Robust track this year focused on predicting query difficulty and using this prediction for improving information retrieval. We developed two prediction alg...
161
click to vote
BDA
2001
15 years 7 months ago
2001
We study KDD (Knowledge Discovery in Databases) processes on OLAP (multidimensional and multilevel) data from a query point of view. Focusing on association rule mining, we consid...