1050 search results - page 122 / 210 » The problem with rights expression languages |
106
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PLANX
2007
14 years 11 months ago
2007
We present an algorithm to solve XPath decision problems under regular tree type constraints and show its use to statically typecheck XPath queries. To this end, we prove the deci...
SSDBM
2009
IEEE
15 years 4 months ago
2009
IEEE
We present a novel sensor network query processing architecture that (a) covers all the query optimization phases that are required to map a declarative query to executable code; ...
100
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CSFW
2003
IEEE
15 years 3 months ago
2003
IEEE
SPKI/SDSI is a language for expressing distributed access control policy, derived from SPKI and SDSI. We provide a first-order logic (FOL) semantics for SDSI, and show that it ha...
ICLP
1997
Springer
15 years 2 months ago
1997
Springer
Kowalski and Sergot’s Event Calculus (EC) is a simple temporal formalism that, given a set of event occurrences, derives the maximal validity intervals (MVIs) over which propert...
104
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AI
2001
Springer
15 years 1 months ago
2001
Springer
The stable semantics has become a prime candidate for knowledge representation and reasoning. The rules associated with propositional logic programs and the stable semantics are no...