4212 search results - page 786 / 843 » Rights Expression Languages |
PODS
2008
ACM
15 years 12 months ago
2008
ACM
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
ICDT
2010
ACM
15 years 9 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...
132
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WWW
2010
ACM
15 years 6 months ago
2010
ACM
Extracting semantic relations among entities is an important first step in various tasks in Web mining and natural language processing such as information extraction, relation de...
109
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KDD
2009
ACM
15 years 6 months ago
2009
ACM
Merchants selling products on the Web often ask their customers to share their opinions and hands-on experiences on products they have purchased. Unfortunately, reading through al...
107
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ICEBE
2007
IEEE
15 years 6 months ago
2007
IEEE
In the development process of a B2B system it is crucial that the business experts are able to express and evaluate agreements and commitments between the partners and that the so...