SYNONYM ESTIMATION DEVICE, SYNONYM ESTIMATION METHOD, AND SYNONYM ESTIMATION PROGRAM

摘要

PROBLEM TO BE SOLVED: To provide a synonym estimation device, a synonym estimation method, and a synonym estimation program, capable of more accurately specifying a synonym similar to a query required for retrieval.;SOLUTION: A synonym estimation device 10 performs: accepting a registration of a calculation expression for calculating a new feature value from a plurality of feature values; learning weighting of the plurality of feature value and a new feature value, the weighting enabling character strings to be determined in a descending order of similarity to the query on the basis of learning data 33; calculating a new feature value from a plurality of feature values of a plurality of synonym candidates retrieved from a query required for retrieval by using a calculation expression; and specifying a synonym similar to the query from among the plurality of synonym candidates on the basis of a calculation result obtained by calculating the plurality of feature values and the new feature value with the learned weighting.;COPYRIGHT: (C)2014,JPO&INPIT