141 search results - page 5 / 29 » Equivalence of queries combining set and bag-set semantics |
ADBIS
2004
Springer
14 years 22 days ago
2004
Springer
Abstract. Query reformulation techniques based on semantic knowledge have been used in two ways in database management systems, namely for query optimization and for data integrati...
ICDT
2010
ACM
14 years 4 months ago
2010
ACM
We study fundamental aspects related to the efficient processing of the SPARQL query language for RDF, proposed by the W3C to encode machine-readable information in the Semantic W...
KRDB
1998
13 years 8 months ago
1998
Previous researchers note the problem for semantic optimisation of database queries caused by its production of a large number of semantically equivalent alternative queries, from...
RR
2010
Springer
13 years 5 months ago
2010
Springer
Semantic wikis and other modern knowledge management systems deviate from traditional knowledge bases in that information ranges from unstructured (wiki pages) over semi-formal (ta...
ICGI
2010
Springer
13 years 8 months ago
2010
Springer
We recapitulate regular one-shot learning from membership and equivalence queries, positive and negative finite data. We present a meta-algorithm that generalizes over as many sett...