New method for query answering in semantic web

摘要

To promote the efficiency of knowledge base retrieval based on description logic, the concept of assertional graph (AG), which is directed labeled graph, is defined and a new AG-based retrieval method is put forward. This method converts the knowledge base and query clause into knowledge AG and query AG by making use of the given rales and then makes use of graph traversal to cany out knowledge base retrieval. The experiment indicates that the efficiency of this method exceeds, respectively, the popular RACER and KAON2 system by 0. 4 percent and 3.3 percent. This method can obviously promote the efficiency of knowledge base retrieval.