directed net

Then the directed net graph is transformed into workflow-net, and the technologies of Petri net are used to analyze the conflicts of workflow-net in order to ensure the logical soundness of workflow process.

进一步将扩展有向网络图转换成工作流网模型，应用Petri网技术分析该模型的冲突结构，以确保工作流过程的逻辑合理性。

Petri net is a particular directed net which is suitable for describing the fault propagation.

而Petir网是一种特殊的有向网，适合于描述故障的传播关系。

Chinese combined-word detection based on directed net of word-sequence frequency

基于词序列频率有向网的中文组合词提取算法

This method uses an extended directed net graph to describe the workflow process in order to ensure the validity of model.

该方法对传统的有向网络图进行扩展并以此来描述工作流过程，确定模型的有效性；

Although this problem is solved by using a TGS based directed arrow diagram, the research of this problem using a Petri net is new method and more direct.

虽然已经有人利用有向图的TGS模型解决过这一问题，但是利用Petri网技术研究该问题是一种新方法，而且更加直观。

Inspired by one of human being's cognition patterns, this paper proposed a new detection algorithm based on directed net of word-sequence frequency to discover combined-words from free texts.

借鉴人类的认知心理模式，提出一种基于词序列频率有向网的组合词抽取算法，以识别自由文本中的组合词。