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» Complete Composition Operators for IOCO-Testing Theory
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CCS
2007
ACM
15 years 4 months ago
A simple and expressive semantic framework for policy composition in access control
In defining large, complex access control policies, one would like to compose sub-policies, perhaps authored by different organizations, into a single global policy. Existing po...
Glenn Bruns, Daniel S. Dantas, Michael Huth
TCS
2010
14 years 8 months ago
Alternating states for dual nondeterminism in imperative programming
The refinement calculus of Back, Morgan, Morris, and others is based on monotone predicate transformers (weakest preconditions) where conjunctions stand for demonic choices betwee...
Wim H. Hesselink
PODS
2007
ACM
142views Database» more  PODS 2007»
15 years 10 months ago
Quasi-inverses of schema mappings
Schema mappings are high-level specifications that describe the relationship between two database schemas. Two operators on schema mappings, namely the composition operator and th...
Ronald Fagin, Phokion G. Kolaitis, Lucian Popa, Wa...
APN
1995
Springer
15 years 1 months ago
An Algebraic Semantics for Hierarchical P/T Nets
The first part of this paper gives an algebraic semantics for Place/Transition nets in terms of an algebra which is based on the process algebra ACP. The algebraic semantics is s...
Twan Basten, Marc Voorhoeve
ECAI
2000
Springer
15 years 2 months ago
An Embedding of ConGolog in 3APL
Several high-level programming languages for programming agents and robots have been proposed in recent years. Each of these languages has its own features and merits. It is still...
Koen V. Hindriks, Yves Lespérance, Hector J...