Document keyword extraction method and apparatus based on word document relevance score and graph structure

摘要

PROBLEM TO BE SOLVED: To provide a method and apparatus for extracting a keyword of a document on the basis of a document relationship score of a word and a transfer score between related words.SOLUTION: A method for extracting a keyword of a document includes: performing morpheme analysis on a document; and using the analyzed result to produce a word graph. A document relationship score of a word is merged with the created word graph and a keyword score indicating a degree of importance of the word is calculated. In accordance with the calculated keyword score, a keyword of the document is selected from among words.