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ADBIS
2009
Springer
14 years 4 months 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 ...
WWW
2011
ACM
13 years 4 months 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...
MIDDLEWARE
2009
Springer
14 years 4 months ago
2009
Springer
Abstract. Pervasive computing applications often entail continuous monitoring tasks, issuing persistent queries that return continuously updated views of the operational environmen...
TREC
2004
13 years 11 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...
BDA
2001
13 years 11 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...