Search support system, search support method, and search support program

A search support method by a search support system supporting a search of unstructured data associated with a subject name that is a name of a subject indicated by a predetermined structure configuring structured data, the search support method comprising:

• extracting, by the search support system, a set of synonyms from teacher data which is unstructured data for detecting synonyms of the subject name;
• and
• generating, by the search support system, an extended synonym which is a phrase obtained by combining a first subject name of a first structure in the structured data or a first synonym which is a synonym of the first subject name and which is extracted by the extracting with one or more second subject names indicated by one or more second structures higher in order than the first structure or second synonyms which are synonyms of the one or more second subject names and which are extracted by the extracting, and storing, by the search support system, the extended synonym in a predetermined extended synonym storage section.

A search support program executed by a computer configuring a search support system supporting a search of unstructured data associated with a subject name that is a name of a subject indicated by a predetermined structure configuring structured data, the search support program causing the computer to function as:

• a synonym extraction section that extracts a set of synonyms from teacher data which is unstructured data for detecting synonyms of the subject name;
• and
• an extended synonym generation section that generates an extended synonym which is a phrase obtained by combining a first subject name of a first structure in the structured data or a first synonym which is a synonym of the first subject name and which is extracted by the synonym extraction section with one or more second subject names indicated by one or more second structures higher in order than the first structure or second synonyms which are synonyms of the one or more second subject names and which are extracted by the synonym extraction section, and that stores the extended synonym in a predetermined extended synonym storage section.