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Abstrakt
Semi-Markov decision processes (SMDPs) are continuous-time Markov decision processes where the residence-time on states is governed by generic distributions on the positive real line.
In this paper we consider the problem of comparing two SMDPs with respect to their time-dependent behaviour. We propose a hemimetric between processes, which we call simulation distance, measuring the least acceleration factor by which a process needs to speed up its actions in order to behave at least as fast as another process. We show that this distance can be computed in time O(n^2 (f(l) + k) + mn^7), where n is the number of states, m the number of actions, k the number of atomic propositions, and f(l) the complexity of comparing the residence-time between states. The theoretical relevance and applicability of this distance is further argued by showing that
(i) it is suitable for compositional reasoning with respect to CSP-like parallel composition and
(ii) has a logical characterisation in terms of a simple Markovian logic.
In this paper we consider the problem of comparing two SMDPs with respect to their time-dependent behaviour. We propose a hemimetric between processes, which we call simulation distance, measuring the least acceleration factor by which a process needs to speed up its actions in order to behave at least as fast as another process. We show that this distance can be computed in time O(n^2 (f(l) + k) + mn^7), where n is the number of states, m the number of actions, k the number of atomic propositions, and f(l) the complexity of comparing the residence-time between states. The theoretical relevance and applicability of this distance is further argued by showing that
(i) it is suitable for compositional reasoning with respect to CSP-like parallel composition and
(ii) has a logical characterisation in terms of a simple Markovian logic.
Originalsprog | Engelsk |
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Titel | Quantitative Evaluation of Systems : 15th International Conference, QEST 2018, Beijing, China, September 4-7, 2018, Proceedings |
Redaktører | Anabelle McIver, Andras Horvath |
Antal sider | 17 |
Forlag | Springer |
Publikationsdato | 4 sep. 2018 |
Sider | 339-355 |
ISBN (Trykt) | 978-3-319-99153-5 |
ISBN (Elektronisk) | 978-3-319-99154-2 |
DOI | |
Status | Udgivet - 4 sep. 2018 |
Begivenhed | Quantitative Evaluation of Systems 2018 - Beijing, Kina Varighed: 4 sep. 2018 → 7 sep. 2018 http://www.qest.org/qest2018/ |
Konference
Konference | Quantitative Evaluation of Systems 2018 |
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Land/Område | Kina |
By | Beijing |
Periode | 04/09/2018 → 07/09/2018 |
Internetadresse |
Navn | Lecture Notes in Computer Science |
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Vol/bind | 11024 |
ISSN | 0302-9743 |
Emneord
- semi-markov process
- markov decision process
- simulation
- hemimetric
Fingeraftryk
Dyk ned i forskningsemnerne om 'A Hemimetric Extension of Simulation for Semi-Markov Decision Processes'. Sammen danner de et unikt fingeraftryk.Projekter
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