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ICDT
2010
ACM
13 years 10 months ago
2010
ACM
In XML data exchange, a schema mapping specifies rules for restructuring a source document under the target schema, and queries over the target document must be answered in a way...
ICDT
2010
ACM
13 years 9 months ago
2010
ACM
Given a database instance and a corresponding view instance, we address the view definitions problem (VDP): Find the most succinct and accurate view definition, when the view quer...
ICDT
2010
ACM
13 years 8 months ago
2010
ACM
Stochastic context-free grammars (SCFGs) have long been recognized as useful for a large variety of tasks including natural language processing, morphological parsing, speech reco...
ICDT
2010
ACM
14 years 2 months ago
2010
ACM
The work reported here lays the foundations of data exchange in the presence of probabilistic data. This requires rethinking the very basic concepts of traditional data exchange, ...
ICDT
2010
ACM
14 years 2 months ago
2010
ACM
It is known that the composition of schema mappings, each specified by source-to-target tgds (st-tgds), can be specified by a secondorder tgd (SO tgd). We consider the question of...