| 摘要: |
| 活性判定是Petri网中一直没有完全解决的问题.针对非对称选择网的活性问题,利用结构分析理论,作了进一步的研究.首先,讨论和分析了活性判定的一般方法,然后利用S-不变,提出了非对称选择网活性判定的一个充分条件,并给出了相应的多项式算法.同时,对有界的非对称选择网的活性单调性问题进行了深入的研究,得到了一个简单的充分必要条件 |
| 关键词: 非对称选择网 活性 活性单调性 多项式时间 |
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| 基金项目:This project is supported by the National natural Science Foundation of China under Grant No.69773016 (国家自然科学基金)and the National Key fundamental Research Program of China under Grant No。G1998030416(国家重点基础研究专项经费). |
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| A Polynomial Time Judgement for Liveness of AsymmetricChoice Nets |
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JIAO Li,LU Wei-ming
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| Abstract: |
| The problem on liveness judgementis stillopen in Petrinets.The paper studies liveness on Asym-metric Choice nets(AC nets)by structure analysis theory.Firstly,some known results on liveness are dis-cussed.Then a sufficient condition by S-invariant for the liveness ofACnets is presented and the correspondingpolynomial-time algorithm is got.Finally a simple necessary-and-sufficientcondition on monotonicity ofboundedACnets is presented. |
| Key words: ACnet liveness liveness monotonicity polynomialtime |