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Keyword extraction device, keyword extraction method, and keyword extraction program
Keyword extraction device, keyword extraction method, and keyword extraction program
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机译：关键字提取装置，关键字提取方法和关键字提取程序
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摘要
PROBLEM TO BE SOLVED: To provide a keyword extraction device, a keyword extraction method and a keyword extraction program with which it is possible to eliminate the ambiguity of meaning of a keyword extracted from a text.SOLUTION: A keyword extraction device 1 comprises: an acquisition unit 11 for acquiring a relation matrix consisting of, as an element, the probability of a surface layer KW and a meaning KW uniquely indicating each of one or more objects represented by the surface layer KW being correlated with each other; an extraction unit 12 for extracting the plurality of surface layers KW from an inputted text; a generation unit 13 for generating, from the relation matrix, a partial relation matrix including probability distribution that corresponds to the surface layer KW extracted by the extraction unit 12; a calculation unit 14 for calculating, for each of the meanings KW correlated to the surface layers KW, reliability based on the total sum of probabilities in the partial relation matrix; and a specification unit 15 for specifying, on the basis of reliability, the meaning KW that indicates an object represented by the text.SELECTED DRAWING: Figure 1
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