999 search results - page 5 / 200 » Constraints in Non-Boolean Contexts |
SACMAT
2003
ACM
15 years 2 months ago
2003
ACM
This paper presents an approach that uses special purpose RBAC constraints to base certain access control decisions on context information. In our approach a context constraint is...
AIPS
2009
14 years 10 months ago
2009
Recently, Helmert and Geffner proposed the context-enhanced additive heuristic, where fact costs are evaluated relative to context states that arise from achieving first a pivot c...
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SAC
2006
ACM
14 years 9 months ago
2006
ACM
Integrity constraints (ICs) play a key role in the definition of conceptual schemas. In the UML, ICs are usually specified as invariants written in the OCL. However, due to the hi...
CSMR
2005
IEEE
15 years 3 months ago
2005
IEEE
In complex systems, it is difficult to identify which system element is involved in which requirement. In this article, we present a new approach for expressing and validating a ...
WWW
2008
ACM
15 years 10 months ago
2008
ACM
While WS-BPEL is emerging as the prominent language for modeling executable business processes, it provides limited support for designing flexible processes. An important need of ...