词表在索引词随主题细分的程度与概念划分的范畴大小之间,亦即在索引词词义的相对广度之间,存在一种十分明显的关系。即主题细分的程度越深,概念的范畴就必然越小。同样地,索引词随主题细分的程度越深,词表任意性的程度也越高。当然,一个高度组配式的系统,它的构成单元比较精确,能够提供许许多多未曾预期的非常狭义的概念,但由于它的固有特性,不可能包容所有的概念,即便力求包括,也未必能够奏效。因此,必然需 There is a very obvious relationship between the degree of categorization of the index words with the subject and the category size of the conceptual division, that is, the relative breadth of the meaning of the index words. That is, the deeper the topic is subdivided, the smaller the concept category is. Similarly, the deeper the index term is subdivided into topics, the greater the degree of randomness of the vocabulary. Of course, a highly configurable system, which has a more precise unit of composition, can provide many unexpected and narrowly defined concepts, but because of its inherent nature, it is not possible to accommodate all concepts, even if one is intended to be included Can work. Therefore, it is necessary