Research on method of constructing domain knowledge base

In view of the difficulty questions in constructing domain knowledge base, This paper with the help of ontology ideas, uses the domain concept and domain ontology from the domain corpus by the method of dynamically acquiring domain words, which is based on the large domain corpus, then describe them by the method of the description of the HowNet's concept, finally constructs the domain knowledge base. The question-answer case analysis indicated that the knowledge base which was constructed by the method has better result than by general knowledge base for question sentence similarity calculation.