Patent ID: 11868726
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 5:
6. A method applied to a named-entity extraction apparatus, the method comprising:
receiving input of extraction document data from which named entities and relations between named entities are extracted, and input of learning document data used for learning of an extraction dictionary used when named entities of extraction document data and relations between named entities are extracted from the extraction document data;
extracting, using the extraction dictionary used when named entities of document data and relations between named entities are extracted from the document data, named entities and relations between named entities from the received extraction document data;
designating character strings corresponding to the named entities extracted among character strings in the received learning document data;
generating, by applying a relation extraction rule in which relations between categories of the named entities extracted from the extraction document data are defined, a learning document in which relations between named entities belonging to the categories defined by the relation extraction rule among the designated named entities are set; and
learning the extraction dictionary based on the generated learning document.