1. A named entity dictionary update apparatus using a named entity dictionary and a mining rule combined with an ontology schema, the apparatus comprising: a named entity dictionary and mining rule database storage module for storing the named entity dictionary where a named entity of a terminology combined with the ontology schema and connected to a concept (class) is defined and a mining rule database where the mining rule configured with an RDF triple and a mining pattern combined with the ontology schema and connected to a relationship name is defined; a mining pattern generation module for recognizing a terminology from a text and converting the terminology into the mining pattern; a named entity and mining rule search module for searching for a corresponding named entity and a mining rule from the named entity dictionary and the mining rule database using the recognized terminology and the mining pattern; and a named entity dictionary update module for estimating a named entity of the terminology using the mining rule and storing the estimated named entity of the terminology in the named entity dictionary depending on a user's selection, if a named entity corresponding to the recognized terminology is not searched from the named entity dictionary and the mining rule corresponding to the mining pattern is searched from the mining rule database.
4. The apparatus according to claim 1 , wherein the named entity dictionary update module includes: a search result determination unit for determining whether or not the terminology is searched from the named entity dictionary as a result of the search; a named entity dictionary update unit for estimating the named entity of the terminology using the mining rule and storing the estimated named entity in the named entity dictionary depending on a user's selection, if the terminology is not searched from the named entity dictionary and the mining pattern is searched from the mining rule database as a result of the determination; and a control unit for controlling the named entity dictionary update unit to define and store properties of the named entity depending on a result of the determination of the search result determination unit.