Fuzzy word determination apparatus, fluctuation word determination method, fluctuation word determination program, and document analysis apparatus

摘要

PROBLEM TO BE SOLVED: To provide an orthographically variant word determination device which precisely extracts an orthographically variant expression from a document.SOLUTION: An orthographically variant word determination device 201 comprises: a difference extraction unit 202 which extracts a third character string included in a first character string and not included in a second character string, and a fourth character string included in the second character string and not included in the first character string with respect to a first group 301 in which the first character string in which words of a specific part of speech range and the second character string, similar to the first character string, of the character string in which the words of the specific speech range are related, generates a second group by relating the third character string and fourth character string to each other, and relates the second group and first group to each other; and a selection part 203 which determines whether the second group is orthographically variant words which are orthographically variant.SELECTED DRAWING: Figure 10