Abstract: In the paper a method of hierarchical fuzzy knowledge representation, including its reasoning method and control structure is discussed. This method introduces concept abstract degree which is used to describe the conceptual hierarchic in concept space. The fuzzy knowledge can be represented by concept cell and reasoning conditions are emphasized by reasoning cooperator and their Thresholds. Three reasoning forms involved in the system are discussed.

Key words: concept cell, reasoning cooperator, abstract degree

摘要： 本文提出了一种分层的模糊知识表示方法以及基于该方法的推理及控制结构，在模糊集合的基础上以抽象度描述了模糊概念在概念空间中的层次，用概念胞来表示概念空间中的模糊知识，用协同元和阈值描述推理的条件，推理以条件激活的方式进行扩展，文中讨论了三种基本的扩展推理形式。

关键词: 概念胞, 协同元, 抽象度