在整个系统设计开发中电子商务网站案例的知识表示、相应推理搜索算法的设计是首先要解决的问题。
The essential problems of IDSEB designing and development are knowledge representation of EC website cases and designing of the corresponding reasoning algorithms.
与传统的基于规则的系统相比，基于案例推理的系统具有简化知识获取、便于知识积累等优点。
Comparing to traditional rule-based system, it has many advantages, which can predigest knowledge gathering and accumulate knowledge easily.
从基于案例推理技术的理论出发，采用物元的知识表示方法，定义了物元可拓与或网。
This paper, using the casebased reasoning techniques, adopts a methodology of extension information representation. And matter element extension information AND/OR nets is defined.
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