Keyword conversion device, keyword conversion program, keyword conversion method and recording medium

摘要

Search system 100, hierarchical the registration for keywords based on the hierarchical rule that you enter the registration for keyword hierarchy is divided into a plurality of layers has been expressed in the representation of the possible given, was established rules of hierarchical a registration-side partition 111 for dividing the elements of each, for registration hierarchical element is an element each divided by the registration side dividing unit 111, a registration side symbolization 112 for adding positional information indicating a hierarchy to which it belongs , I was equipped with the registered side encryption unit 113 for data conversion according to the data conversion to a predetermined rule, the registration for hierarchical element of each position information has been added by the registration side symbol of section 112.