| 摘要 |
PROBLEM TO BE SOLVED: To provide a synonym dictionary creation device which can automatically detect synonyms from a development document.SOLUTION: A synonym dictionary creation device comprises: a parser which acquires a syntax analysis result composed of syntax analysis information consisting of case analysis information that is a dependent format representing a supplement word having the dependent relation with a predicate and dependent information that represents a dependent relation between clauses, and modality information; an action chain structure generation unit which analyzes the syntax analysis result into a node structure collecting a predicate clause and a supplement word clause having the dependent relation with the predicate clause, and generates an action chain structure in which the dependent relation in the node structure is tied with a directed relation, from the node structure generated from a single sentence; a similarity degree calculation unit which calculates a similarity degree representing similarity between the two node structures for each pair of the action chain structures; an analogy degree calculation unit which calculates an analogy degree between two words to be a pair of words from the case analysis information and the modality information by use of a pair of the action chain structures with the high similarity degree; and a synonym presentation unit which regards words with the high analogy degree as synonyms to create and output a synonym dictionary.SELECTED DRAWING: Figure 1 |
