Generating requirements of domain ontology evolution based on text

Ontology evolution has become more and more important to domain ontology application. The requirements are the basis of ontology evolution. This paper gives a model for auto-generated requirements of domain ontology evolution from domain text. First it extracts relevant concepts from domain text in natural language, and then uses the weighted word frequency algorithm to determine whether the concepts are the key concepts. Last, combining the ontology-search-algorithm with the rules of generating evolution requirements, it automatically generates the requirements of domain ontology evolution.