Aiming at the complexion in which the information lost in index ration, the matter element method was put forward to carry on urban ecosystem health evaluation.
针对传统评价方法中量化指标丢失信息的情况，提出应用物元模型进行城市生态系统健康评价。
Information matter element as an special matter element has extensibility and can form extensive information space.
信息物元作为一种特殊的物元具有可拓性，从而能形成可拓信息空间。
This paper, using the casebased reasoning techniques, adopts a methodology of extension information representation. And matter element extension information AND/OR nets is defined.
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。
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