383 search results - page 42 / 77 » Query Containment for Conjunctive Queries with Regular Expre... |
ICDE
2004
IEEE
14 years 10 months ago
2004
IEEE
XML and other types of semi-structured data are typically represented by a labeled directed graph. To speed up path expression queries over the graph, a variety of structural inde...
EMNLP
2009
13 years 6 months ago
2009
User clicks on a URL in response to a query are extremely useful predictors of the URL's relevance to that query. Exact match click features tend to suffer from severe data s...
CIKM
2011
Springer
12 years 8 months ago
2011
Springer
We present Nyaya, a system for the management of Semantic-Web data which couples a general-purpose and extensible storage mechanism with efficient ontology reasoning and querying ...
CIKM
2004
Springer
14 years 2 months ago
2004
Springer
Document-centric XML collections contain text-rich documents, marked up with XML tags that add lightweight semantics to the text. Querying such collections calls for a hybrid quer...
ADBIS
2004
Springer
14 years 13 days ago
2004
Springer
Abstract. We present for the first-order theory of atomic Boolean algebras of sets with linear cardinality constraints a quantifier elimination algorithm. In the case of atomic Boo...