...关键词:SVM;DNA分类;特征属性空间;分类超平面 [gap=1158]Key words: SVM; classification of DNA; feature attribute space; classification hyperplane ...
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空间、属性、时间是地理现象的三个基本特征或地理信息系统数据库的三种基本数据成分。
Space, thematic attribute and time are the three basic characteristics of geographical phenomena or the essential data types of GIS database.
然而,地学数据显著的空间特征和复杂的结构属性又不能简单运用常规的数据库管理系统进行表述、处理。
But it is very difficult to use common data-management technique based on relation database to the geological data because of their distinct spatial features and complex configurations.
空间是县域的固有属性,县域经济差异也就必然具有空间分异特征。
County economic difference has spatial characteristic, because space is its inherent attribute.
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