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。

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。

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；

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