1445 search results - page 92 / 289 » XPath query containment |
KDD
2004
ACM
15 years 10 months ago
2004
ACM
In this paper we provide a fast, data-driven solution to the failing query problem: given a query that returns an empty answer, how can one relax the query's constraints so t...
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SIGMOD
2007
ACM
15 years 10 months ago
2007
ACM
Complex queries often contain common or similar subexpressions, either within a single query or among multiple queries submitted as a batch. If so, query execution time can be imp...
WWW
2010
ACM
15 years 4 months ago
2010
ACM
In this paper, we address the problem of database selection for XML document collections, that is, given a set of collections and a user query, how to rank the collections based o...
CIKM
2010
Springer
14 years 8 months ago
2010
Springer
Traditional interactive information retrieval systems function by creating inverted lists, or term indexes. For every term in the vocabulary, a list is created that contains the d...
WAIM
2010
Springer
14 years 7 months ago
2010
Springer
Keyword search in relational databases has been widely studied in recent years. Most of the previous studies focus on how to answer an instant keyword query. In this paper, we focu...