According to that, the research put forward a new method for optimizing designing of greenhouses' structures completely based on the analysis of the tests data and the importance of the attribute.
并以此为基础，提出了一种基于试验数据分析和试验条件属性重要性的日光温室结构优化的方法。
Four kinds of condition entropy are defined in this paper. Accordingly, four kinds of entropy based methods for the attribute reduction in the rough set data analysis are proposed.
本文定义了四种条件熵，并在此基础上提出了四种基于熵的方法，以用于粗糙集数据分析中的属性简约。
The models solve the problems of computer compressing store and analysis and processing for map elements, with relationship and coexistence of geo graphics database and geo attribute data files.
该模型以地学图形数据库与属形数据文件关联共存的方式，解决了地图要素的计算机压缩存贮与分析处理问题。
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