Title
Learning of event-recording automata
Abstract
In regular inference, a regular language is inferred from answers to a finite set of membership queries, each of which asks whether the language contains a certain word. One of the most well-known regular inference algorithms is the L^* algorithm due to Dana Angluin. However, there are almost no extensions of these algorithms to the setting of timed systems. We extend Angluin's algorithm for on-line learning of regular languages to the setting of timed systems. Since timed automata can freely use an arbitrary number of clocks, we restrict our attention to systems that can be described by deterministic event-recording automata (DERAs). We present three algorithms, TL"s"g^*, TL"n"s"g^* and TL"s^*, for inference of DERAs. In TL"s"g^* and TL"n"s"g^*, we further restrict event-recording automata to be event-deterministic in the sense that each state has at most one outgoing transition per action; learning such an automaton becomes significantly more tractable. The algorithm TL"n"s"g^* builds on TL"s"g^*, by attempts to construct a smaller (in number of locations) automaton. Finally, TL"s^* is a learning algorithm for a full class of deterministic event-recording automata, which infers a so called simple DERA, which is similar in spirit to the region graph.
Year
DOI
Venue
2010
10.1016/j.tcs.2010.07.008
Theor. Comput. Sci.
Keywords
Field
DocType
event-recording automaton,arbitrary number,model inference,dana angluin,deterministic event-recording automaton,model learning,timed systems,certain word,well-known regular inference algorithm,regular inference,on-line learning,algorithm tl,regular language
Graph,Deterministic automaton,Database query,Computer science,Automaton,Theoretical computer science,Equivalence (measure theory),Timed automaton,Artificial intelligence,Regular language,Hypercube,Distributed computing
Journal
Volume
Issue
ISSN
411
47
Theoretical Computer Science
Citations 
PageRank 
References 
11
0.65
29
Authors
3
Name
Order
Citations
PageRank
Olga Grinchtein11157.91
bengt jonsson23637263.46
Martin Leucker31639112.68