Abstract: Aiming at the problem that different audiences have different application requirements in the process of ontology modeling, a demand-based spiral feedback method is proposed by combining the seven-step method of ontology modeling with the spiral model of software development. Firstly, we clarify the domain knowledge category and user needs, and carry out the overall ontology design; secondly, the domain experts evaluate the knowledge system according to the principles of ontology construction; and then, we assemble the knowledge system model, define the ontology attributes, create examples, and complete the detailed ontology design; finally, user’s evaluation results are fed back, a new round of incremental iterations starts until a correct and usable knowledge system is formed. Compared with the seven-step method, the proposed method emphasizes ontology testing and user requirements, and constructs domain knowledge models with small segments. In addition, the military equipment knowledge system realized by this method is oriented to combat needs and provides strong theoretical support for military operations.

Key words: ontology modeling, spiral model, military equipment