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CONCUR
1994
Springer
14 years 17 days 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...
JMLR
2010
13 years 3 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...
IFM
2007
Springer
14 years 2 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...
APCCM
2006
13 years 10 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....
FOCS
1998
IEEE
14 years 22 days 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...