TY  - JOUR
N1  - Proceedings of the Second Workshop on Quantitative Aspects of Programming Languages (QAPL 2004)
ID  - eprints165
EP  - 59
KW  - Constraint Semirings; Constraints; Temporal Logics; Quantitative Model Checking
AV  - public
TI  - Quantitative mu-calculus and CTL Based on Constraint Semirings
UR  - http://www.sciencedirect.com/science/article/B75H1-4F7B9RJ-K/2/adc103283079a1187365220a83aad6e5
SN  - 1571-0661
N2  - Model checking and temporal logics are boolean. The answer to the model checking question does a system satisfy a property? is either true or false, and properties expressed in temporal logics are defined over boolean propositions. While this classic approach is enough to specify and verify boolean temporal properties, it does not allow to reason about quantitative aspects of systems. Some quantitative extensions of temporal logics has been already proposed, especially in the context of probabilistic systems. They allow to answer questions like with which probability does a system satisfy a property?
We present a generalization of two well-known temporal logics: CTL and the [mu]-calculus. Both extensions are defined over c-semirings, an algebraic structure that captures many problems and that has been proposed as a general framework for soft constraint satisfaction problems (CSP). Basically, a c-semiring consists of a domain, an additive operation and a multiplicative operation, which satisfy some properties. We present the semantics of the extended logics over transition systems, where a formula is interpreted as a mapping from the set of states to the domain of the c-semiring, and show that the usual connection between CTL and [mu]-calculus does not hold in general. In addition, we reason about the feasibility of computing the logics and illustrate some applications of our framework, including boolean model checking.
VL  - 112
Y1  - 2005///
JF  - Electronic Notes in Theoretical Computer Science
PB  - Elsevier
A1  - Lluch-Lafuente, Alberto
A1  - Montanari, Ugo
SP  - 37
ER  -