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Paper Abstract and Keywords
Presentation 2009-01-29 13:50
Enhancing an Algorithm for Finding Legal Firing Sequences of Petri Nets by Means of Controlling Token Supply Flow and Conflicting Transition-based Backtracking
Kaigo Hatano, Satoshi Taoka, Toshimasa Watanabe (Hiroshima Univ.) CST2008-43
Abstract (in Japanese) (See Japanese page) 
(in English) The Maximum Legal Firing Sequence problem of Petri nets ( MAX-LFS
for short) is
defined as follows:
``Given a Petri net $N$, an initial marking $M_0$ and a firing count vector $X$,
find a firing sequence $\delta$ that is legal on $M_0$
with respect to some $X'$
with $X' \le X$ and the length is maximum.''
MAX-LFS is known to be NP-hard. So, some huristic algorithms have been
proposed.
In this paper, we propose enhanced algorithms $FEIDEQ\_p$ and $FEIDEQ\_MK$ for MAX-LFS by
means of
(i) avoiding the generation of nonfirable transitions by searching
sources that supply tokens
and (ii) introducing backtracking based on conflicting
transitions.
It is shonw
through computing experiments that
the proposed algorithms have the highest capability among existing algorithms.
Keyword (in Japanese) (See Japanese page) 
(in English) Petri nets / legal firing sequence problem / heuristic algorithms / promotion rules of transition firing / backtracking / / /  
Reference Info. IEICE Tech. Rep., vol. 108, Jan. 2009.
Paper #  
Date of Issue 2009-01-22 (CST) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
reproduction
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF CST2008-43

Conference Information
Committee MSS  
Conference Date 2009-01-29 - 2009-01-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Kanagawa Industrial Promotion Center 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Concurrent Systems 
Paper Information
Registration To MSS 
Conference Code 2009-01-CST 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Enhancing an Algorithm for Finding Legal Firing Sequences of Petri Nets by Means of Controlling Token Supply Flow and Conflicting Transition-based Backtracking 
Sub Title (in English)  
Keyword(1) Petri nets  
Keyword(2) legal firing sequence problem  
Keyword(3) heuristic algorithms  
Keyword(4) promotion rules of transition firing  
Keyword(5) backtracking  
Keyword(6)  
Keyword(7)  
Keyword(8)  
1st Author's Name Kaigo Hatano  
1st Author's Affiliation Hiroshima University (Hiroshima Univ.)
2nd Author's Name Satoshi Taoka  
2nd Author's Affiliation Hiroshima University (Hiroshima Univ.)
3rd Author's Name Toshimasa Watanabe  
3rd Author's Affiliation Hiroshima University (Hiroshima Univ.)
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Speaker Author-1 
Date Time 2009-01-29 13:50:00 
Presentation Time 25 minutes 
Registration for MSS 
Paper # CST2008-43 
Volume (vol) vol.108 
Number (no) no.415 
Page pp.11-16 
#Pages
Date of Issue 2009-01-22 (CST) 


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