分类类的英文

例句与用法

1. A method that combines category - based and keyword - based concepts for a better information retrieval system is introduced
   摘要介绍了一种综合各层级分类类目和对应关键词来构造概念体系并用于改进信息检索系统效果的方法。
2. The ontology is domain specific and includes a list of keywords organized by degree of importance to the categories of the ontology , and by means of semantic knowledge . the ontology can improve the effects of document similarity measure and feedback of information retrieval systems
   该本体面向特定领域，将关键词以不同权值对应于各分类类目，通过其语义知识来改进文本相似性测度以及信息检索系统的效果。
3. A method that combines category - based and keyword - based concepts for a better information retrieval system is introduced . to improve document clustering , a document similarity measure based on cosine vector and keywords frequency in documents is proposed , but also with an input ontology . the ontology is domain specific and includes a list of keywords organized by degree of importance to the categories of the ontology , and by means of semantic knowledge , the ontology can improve the effects of document similarity measure and feedback of information retrieval systems . two approaches to evaluating the performance of this similarity measure and the comparison with standard cosine vector similarity measure are also described
   介绍了一种综合各层级分类类目和对应关键词来构造概念体系并用于改进信息检索系统效果的方法.为了改进文本聚类的效果,提出了将领域知识本体和文本关键词词频相结合的基于余弦向量的文本相似性测度方法.该本体面向特定领域,将关键词以不同权值对应于各分类类目,通过其语义知识来改进文本相似性测度以及信息检索系统的效果.进一步给出了对基于本体的相似性测度方法进行效果评价的2种策略以及该方法与经典余弦向量测度方法的比较结果