Research On Method Of Mining Knowledge Elements Based On Citation Chain

Knowledge units in a literature is implied, and there is no uniform standard, how to define and accurately extract the knowledge units which imply in a literature is becoming increasingly a topic by researchers, it is also an important research direction in doing text mining. This paper adopts the method of citation relevance to extract knowledge elements in literatures base on citation chain, it can bypass the threshold of literature and go deep into internal literature to assess the structure of the contents, so that it can improve the depth in assessing literatures from traditional regarding literatures as unit to regarding knowledge elements of literatures as unit. First this paper summarizes the present situation in this field at home and abroad, analyzes the rule of citation index and extracts the characteristic sentences of related papers, then extracts the characteristic sentences of corresponding references according to sentence similarity calculation, respectively stored in two database tables. Second extracts the triples of the characteristic sentences according to custom rules and expresses them by Ontology, also respectively stored in two database tables. Third this paper presents a method of Ontology similarity calculation based on double weight, for comparing the similarity of knowledge elements in scientific literatures and corresponding references. Fourth gives an illustration by specific examples according to the above-mentioned steps and gives out the results. Last this paper summarizes the innovation work, analyzes the deficiencies in this paper and discusses the future of work.The innovation work are mainly about: (1) This paper presents a method of mining and relating knowledge element based on citation chain, improving the deficiencies of evaluating a scientific literature as a unit in the past; (2) This paper presents a method of Ontology similarity calculation based on double weight, it can fast and accurately calculate the similarity of knowledge elements in scientific literatures and corresponding references.