In order to meet the needs of case-knowledge acquisition, presented an estimation method for diesel engine similarity based on fuzzy number and grey incidence analysis.
针对柴油机案例知识获取的需求，提出了一种基于模糊数学和灰色关联分析的柴油机相似性评估方法。
Then, according to the basic ideas of (traditional) net-making clustering method, the calculation steps of the clustering analysis method with linguistic similarity (matrices) is developed.
然后依据传统的编网聚类方法的基本思路，给出基于群体语言相似矩阵的聚类分析方法的计算步骤。
This paper discusses similarity criterion in similarity theory, and how to derivate similarity criterion of mathematics simulation model by dimensional analysis. A example for this method is given.
讨论了相似理论中的相似准则，以及如何用因次分析法推导数学仿真模型中的相似准则，并举例说明了这种方法的实用性。
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