Compared with many workflow process models, the model based on Activity Network has the best readability.

在描述工作流过程的模型中，基于活动网络图工作流模型的可读性最好。

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Through the hierarchical research of workflow process model, it is put forward three levels of workflow process models: meta model level, model level and control model level.

对工作流过程模型进行分层研究，提出了三层架构的工作流过程模型：元模型层、模型层和控制模型层。

youdao

Through the hierarchical research of workflow process model, it is put forward three levels of workflow process models: meta model level, model level and control model level.

对工作流过程模型进行分层研究，提出了三层架构的工作流过程模型：元模型层、模型层和控制模型层。

youdao