本文分别详细讨论了正向混合超图和逆向混合超图中准路的分类定义及理论。
In this paper, the class definition and the theory about quasi-paths in a forward mixed hypergraph and an inverse mixed hypergraph are separately discussed in detail.
分析了目前普遍使用的正向推理、逆向推理、混合推理的特点和不足，根据实际开发经验对此提出了改进，并给出了具体实现方。
The paper analyses the characters and shortcoming of the forward inference , backward inference and the mixed inference which are usually used.
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