On the Total Variation Distance of Semi-Markov Chains

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Abstract

Semi-Markov chains (SMCs) are continuous-time probabilistic transition systems where the residence time on states is governed by generic distributions on the positive real line. This paper shows the tight relation between the total variation distance on SMCs and their model checking problem over linear real-time specifications. Specifically, we prove that the total variation between two SMCs coincides with the maximal difference w.r.t. the likelihood of satisfying arbitrary MTL formulas or omega-languages recognized by timed automata. Computing this distance (i.e., solving its threshold problem) is NP-hard and its decidability is an open problem. Nevertheless, we propose an algorithm for approximating it with arbitrary precision.
OriginalsprogEngelsk
TitelFoundations of Software Science and Computation Structures : 18th International Conference, FOSSACS 2015, Held as Part of the European Joint Conferences on Theory and Practice of Software, ETAPS 2015, London, UK, April 11-18, 2015, Proceedings
RedaktørerAndrew Pitts
Antal sider15
Vol/bind9034
ForlagSpringer
Publikationsdato2015
Sider185-199
ISBN (Trykt)978-3-662-46677-3
ISBN (Elektronisk)978-3-662-46678-0
DOI
StatusUdgivet - 2015
Begivenhed18th International Conference on Foundations of Software Science and Computation Structures - Queen Mary University, London, Storbritannien
Varighed: 11 apr. 201518 apr. 2015
Konferencens nummer: 18

Konference

Konference18th International Conference on Foundations of Software Science and Computation Structures
Nummer18
LokationQueen Mary University
Land/OmrådeStorbritannien
ByLondon
Periode11/04/201518/04/2015
NavnLecture Notes in Computer Science
ISSN0302-9743

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