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129
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CONCUR
1994
Springer
15 years 7 months ago
1994
Springer
Abstract. In this paper we study a special operator for sequential composition, which is de ned relative to a dependency relation over the actions of a given system. The idea is th...
149
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JMLR
2010
14 years 9 months ago
2010
Continuous-time Bayesian networks is a natural structured representation language for multicomponent stochastic processes that evolve continuously over time. Despite the compact r...
129
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IFM
2007
Springer
15 years 9 months ago
2007
Springer
We present an approach to modelling Abadi–Cardelli-style object calculi as Unifying Theories of Programming (UTP) designs. Here we provide a core object calculus with an operatio...
153
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APCCM
2006
15 years 4 months ago
2006
The integration of data from different sources often leads to the adoption of schemata that entail a loss of information in respect of one or more of the data sets being combined....
146
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FOCS
1998
IEEE
15 years 7 months ago
1998
IEEE
This paper deals with the evaluation of acyclic Boolean conjunctive queries in relational databases. By well-known results of Yannakakis [1981], this problem is solvable in polynom...