Character string processing method and apparatus

Abstract

In order to solve the above problem, disclosed as a first aspect is a method including the steps of analyzing a character string in a document into partial character strings; calculating, with respect to each of the partial character strings, a score incorporating appearance frequency of the partial character string; presenting the partial character strings and the scores to a user; determining which ones of the partial character strings have been selected by the user; storing the selected partial character strings as a safe partial character string list; and replacing, with predetermined replacement character strings, the partial character strings excluding the partial character strings existing in the safe partial character string list.

Description

technical field [0001] The present invention relates to a method, device and program for replacing information that should be kept secret in a document with different information. Background technique [0002] In recent years, techniques for masking (replacing) character strings in documents need to be enhanced from the viewpoint of personal information protection. There is a known technique that meets this need. With this technique, words to be masked are not displayed by using a dictionary in which strings that should be masked are stored. For example, Patent Document 1 employs the following masking technique. First, based on the dictionary, the parts to be masked are detected from the input document. The detected parts are then presented to the user as a list of masked results to allow the user to correct the list, the contents of the corrected list serving as the mask body part. [0003] With the described method, there is a possibility that there are mask candidates...

AI Technical Summary

Problems solved by technology

[0006] In conventional techniques, there has always been the problem that character strings that are not in the dictionary cannot appear as mask candidates

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