## What does PEPA stand for?

#### What does PEPA mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: PEPA.

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 PEPA Performance Evaluation Process Algebra Rate it: PEPA People, Equipment, POL, and Ammunition Rate it: PEPA Portland Environment Protection Association Rate it: PEPA Pacific Egg Poultry Association Rate it: PEPA Programa Educativo para Agricultores Rate it: PEPA Programme evaluation for policy analysis Rate it: PEPA Property Energy Professionals AssociationGovernmental » Energy -- and more... Rate it: PEPA Pontotoc Electric Power Association Rate it: PEPA Pacific Egg and Poultry Association Rate it: PEPA Petroleum Exploration and Production Authority Rate it: PEPA Program of Experience in the Palliative Approach Rate it: PEPA Pt England Performing Arts Rate it: PEPA Purchase Environmental Protective AssociationGovernmental » Environmental -- and more... Rate it:

#### What does PEPA mean?

PEPA
Performance Evaluation Process Algebra is a stochastic process algebra designed for modelling computer and communication systems introduced by Jane Hillston in the 1990s. The language extends classical process algebras such as Milner's CCS and Hoare's CSP by introducing probabilistic branching and timing of transitions. Rates are drawn from the exponential distribution and PEPA models are finite-state and so give rise to a stochastic process, specifically a continuous-time Markov process. Thus the language can be used to study quantitative properties of models of computer and communication systems such as throughput, utilisation and response time as well as qualitative properties such as freedom from deadlock. The language is formally defined using a structured operational semantics in the style invented by Gordon Plotkin. As with most process algebras, PEPA is a parsimonious language. It has only four combinators, prefix, choice, co-operation and hiding. Prefix is the basic building block of a sequential component: the process.P performs activity a at rate r before evolving to behave as component P. Choice sets up a competition between two possible alternatives: in the process.

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