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    政大機構典藏 > 商學院 > 資訊管理學系 > 期刊論文 >  Item 140.119/65038
    Please use this identifier to cite or link to this item: http://nccur.lib.nccu.edu.tw/handle/140.119/65038


    Title: A novel liveness condition for S3PGR2
    Authors: Chao, Daniel Y.;Chen, Jiun-Ting;Yu, Fang
    趙玉
    Contributors: 資管系
    Keywords: Deadlocks;Petri nets;siphons;synchronized choice nets;weakly live
    Date: 2013.04
    Issue Date: 2014-03-31 16:37:03 (UTC+8)
    Abstract: Systems of simple sequential processes with resources (S3PR), modeled by ordinary Petri nets (OPNs) are live if and only if no siphons (a set of places) can ever become empty of tokens. Systems of simple sequential processes with general resources requirement (S3PGR2), modeled by general Petri nets (GPNs), are a generalization of S3PR. It has been a hot research topic to find the sufficient and necessary condition of liveness for S3PGR2. When an OPN (respectively, GPN) is deadlocked, the set of all unmarked (respectively, non-max-marked) places forms a siphon, which is said to be deadly marked. However, when an S3PGR2 is livelocked but not deadlocked, e.g., both live and dead transitions exist, the set of non-max-marked places, denoted by ϑ, may not form a siphon. Thus, it is limited using deadly marked or max-controlled siphons to characterize liveness of S3PGR2. The first author proposed earlier max’-controlled siphons to characterize liveness of S3PGR2. However, the presence of a set of non-max’-marked places is not a sufficient condition for an S3PGR2 to be non-live and cannot be relied on to devise mixed integer programming (MIP) testing. In this paper, we present the sufficient and necessary liveness condition of S3PGR2. We define pivot markings, under which we prove that ϑ forms a siphon. To detect livelocks, the number of disabled arcs must be maximal under the pivot marking. This result is useful to reorient the MIP test of S3PR for S3PGR2. [ABSTRACT FROM PUBLISHER]
    Relation: Transactions of the Institute of Measurement and Control,35(2), 131-137
    Data Type: article
    DOI 連結: http://dx.doi.org/10.1177/0142331211432951
    DOI: 10.1177/0142331211432951
    Appears in Collections:[資訊管理學系] 期刊論文

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