TY - CHAP Y1 - 2009/// A1 - De Nicola, Rocco A1 - Latella, Diego A1 - Loreti, Michele A1 - Massink, Mieke UR - http://dx.doi.org/10.1007/978-3-642-02930-1_36 M1 - 5556 N1 - The original publication is available at www.springerlink.com AV - public T3 - Lecture Notes in Computer Science SP - 435 TI - Rate-Based Transition Systems for Stochastic Process Calculi PB - Springer T2 - Automata, Languages and Programming (ICALP (2) 2009) ED - Albers, Susanne ED - Marchetti-Spaccamela, Alberto ED - Matias, Yossi ED - E. Nikoletseas, Sotiris ED - Thomas, Wolfgang SN - 978-3-642-02929-5 EP - 446 ID - eprints275 N2 - A variant of Rate Transition Systems (RTS), proposed by Klin and Sassone, is introduced and used as the basic model for defining stochastic behaviour of processes. The transition relation used in our variant associates to each process, for each action, the set of possible futures paired with a measure indicating their rates. We show how RTS can be used for providing the operational semantics of stochastic extensions of classical formalisms, namely CSP and CCS. We also show that our semantics for stochastic CCS guarantees associativity of parallel composition. Similarly, in contrast with the original definition by Priami, we argue that a semantics for stochastic ?-calculus can be provided that guarantees associativity of parallel composition. ER -