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工作流笔记(三)

工作流笔记(三)

作者: Nino_Lau | 来源:发表于2019-04-11 09:50 被阅读0次

    A secret project by the government (let's call it Project X) will be executed by one person and consists of 6 tasks: A, B, C, D, E, and F. Figure 2.28 specifies the order in which the tasks need to be executed (precedence graph, cf. PERT/CPM). A possible execution trace is for example ABDCEF.

    (a) Model the project in terms of a classical Petri net.

    (b) How does one model so that E is optional?

    (c) How does one model so that D and E should be executed consecutively, that is, B and C are not allowed between D and E?

    image
    1. ans1
    2. ans2
    3. ans3

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