relation: http://eprints.imtlucca.it/2555/ title: Bottom-up beats top-down hands down creator: Tribastone, Mirco subject: QA75 Electronic computers. Computer science description: In PEPA, the calculation of the transitions enabled by a process accounts for a large part of the time for the state space exploration of the underlying Markov chain. Unlike other approaches based on recursion, we present a new technique that is iterative—it traverses the process’ binary tree from the sequential components at the leaves up to the root. Empirical results shows that this algorithm is faster than a similar implementation employing recursion in Java. Finally, a study on the user-perceived performance compares our algorithm with those of other existing tools (ipc/Hydra and the PEPA Workbench). publisher: AESOP date: 2007-07 type: Book Section type: NonPeerReviewed identifier: Tribastone, Mirco Bottom-up beats top-down hands down. In: Proceedings of the 6th Workshop on Process Algebra and Stochastically Timed Activities (PASTA). AESOP, pp. 97-104. (Unpublished) (2007)