在研究众多模型表示方法的基础上，提出基于知识的模型表示及模型管理系统的设计方法．该方法结合抽象模型思想，在系统实现上具有可行性，并以港口管理决策中的有关问题对本方法加以说明 Based on the study of many models, this paper presents a knowledge-based model representation and a design method of the model management system. This method combined with the abstract model idea is feasible in the system realization, and explains the method with the related problems in the port management decision-making