1. A semantic-based searching apparatus comprising: a storage unit configured to store: an associative search structure previously defined to obtain a final search object in response to an input search query, and semantic metadata which is stored in conformity with a semantic index configuration that includes a feature metadata index including a keyword and an inverted index used to identify a specific object, a semantic entity metadata index to indicate semantic entities corresponding to the keyword, and a semantic relation metadata index to indicate a relation between the semantic entities; and a control unit configured to generate a search result corresponding to the final search object in response to the input search query using the semantic metadata and the associative search structure.
1. A semantic-based searching apparatus comprising: a storage unit configured to store: an associative search structure previously defined to obtain a final search object in response to an input search query, and semantic metadata which is stored in conformity with a semantic index configuration that includes a feature metadata index including a keyword and an inverted index used to identify a specific object, a semantic entity metadata index to indicate semantic entities corresponding to the keyword, and a semantic relation metadata index to indicate a relation between the semantic entities; and a control unit configured to generate a search result corresponding to the final search object in response to the input search query using the semantic metadata and the associative search structure. 6. The semantic-based searching apparatus of claim 1 , wherein in response to the input search query, the control unit determines a first information item, a second information item, a search order, and a search means from the previously defined associative search structure and generates the search result for the search query based on the determination result, wherein the search query is applied to the first information item and the second information item participates in a search between the first information item and the final search object.