A Computational System of Metaphor Generation with Evaluation Mechanism

This study regards metaphor generation as a process where an expression consisting of a target (A) is modified by certain features to become a metaphorical expression of the form "target (A) like vehicle (B)". A computational system consisting of a metaphor generation process and a metaphor evaluation process is developed. In the metaphor generation process, a metaphor generation model [1] outputs candidate nouns for vehicles from input expressions. In the metaphor evaluation process, the candidate nouns are evaluated based on the similarities between the meanings of metaphors including the candidate nouns and the meaning of the input expression.