Method of automatic construction of thesaurus and method of automatic search

摘要

The information search method without pre-defining or determining the order of the term by the manual method auto-constructed thesaurus that can form a hierarchy of terms and thus automatically build a search expression by a building is provided with a thesaurus. Construction thesaurus of the present invention method is' centroid is because factors to ever identify the cluster is of the term appearing at the same time on the layer is the frequency of appearance is low term throughout the literature to represent the cluster "is a monolingual or a few following hypothesis as the term is extracted centroid to represent ever. Lists of these layers in order to indicate the hierarchical relationship between terms. By thus structured in a hierarchical thesaurus, allows the user to analyze them a query input by comparing the terminology in the thesaurus haejugo present the relevant hierarchy thesaurus browser screen to select it for the lowest word to keywords by searching for information do.