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» Equivalence Relations on Classes of Computable Structures
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FOSSACS
2011
Springer
12 years 11 months ago
Ordinal Theory for Expressiveness of Well Structured Transition Systems
To the best of our knowledge, we characterize for the first time the importance of resources (counters, channels, alphabets) when measuring expressiveness of WSTS. We establish, f...
Rémi Bonnet, Alain Finkel, Serge Haddad, Fe...
SEFM
2007
IEEE
14 years 1 months ago
Disciplining Orchestration and Conversation in Service-Oriented Computing
We give a formal account of a calculus for modeling service-based systems, suitable to describe both service composition (orchestration) and the protocol that services run when in...
Ivan Lanese, Francisco Martins, Vasco Thudichum Va...
DCC
2006
IEEE
14 years 7 months ago
Non-Asymptotic Design of Finite State Universal Predictors for Individual Sequences
In this work we consider the problem of universal prediction of individual sequences where the universal predictor is a deterministic finite state machine, with a fixed, relativel...
Amir Ingber, Meir Feder
FSTTCS
2004
Springer
14 years 1 months ago
Decidability of MSO Theories of Tree Structures
In this paper we provide an automaton-based solution to the decision problem for a large set of monadic second-order theories of deterministic tree structures. We achieve it in two...
Angelo Montanari, Gabriele Puppis
PODS
2004
ACM
139views Database» more  PODS 2004»
14 years 7 months ago
On Preservation under Homomorphisms and Unions of Conjunctive Queries
Unions of conjunctive queries, also known as select-project-join-union queries, are the most frequently asked queries in relational database systems. These queries are definable b...
Albert Atserias, Anuj Dawar, Phokion G. Kolaitis