Title
Expected Reachability-Time Games
Abstract
In an expected reachability-time game (ERTG) two players, Min and Max, move a token along the transitions of a probabilistic timed automaton, so as to minimise and maximise, respectively, the expected time to reach a target. These games are concurrent since at each step of the game both players choose a timed move (a time delay and action under their control), and the transition of the game is determined by the timed move of the player who proposes the shorter delay. A game is turn-based if at any step of the game, all available actions are under the control of precisely one player. We show that while concurrent ERTGs are not always determined, turn-based ERTGs are positionally determined. Using the boundary region graph abstraction, and a generalisation of Asarin and Maler's simple function, we show that the decision problems related to computing the upper/lower values of concurrent ERTGs, and computing the value of turn-based ERTGs are decidable and their complexity is in NEXPTIME\ co-NEXPTIME.
Year
DOI
Venue
2016
10.1007/978-3-642-15297-9_11
FORMATS'10 Proceedings of the 8th international conference on Formal modeling and analysis of timed systems
Keywords
Field
DocType
shorter delay,lower value,decision problem,expected reachability-time game,expected time,turn-based ertgs,available action,time delay,concurrent ertgs,boundary region graph abstraction,timed automaton
NEXPTIME,Complexity class,Decision problem,Nondeterministic algorithm,Computer science,Theoretical computer science,Reachability,Timed automaton,Probabilistic logic,Stochastic game
Journal
Volume
Issue
ISSN
abs/1604.04435
C
0302-9743
ISBN
Citations 
PageRank 
3-642-15296-1
4
0.42
References 
Authors
28
4
Name
Order
Citations
PageRank
Vojtech Forejt130214.69
Marta Z. Kwiatkowska26118322.21
Gethin Norman34163193.68
Ashutosh Trivedi414928.08