物流领域本体的模块化研究与实现

为解决物流领域大本体不易维护、应用困难等问题，将模块化技术引入物流领域本体建设中．提出了本体模块的定义．给出了物流领域问题域划分原则，并采用断言方式将模块连接，形成不同语境下的知识表示．针对模块连接时产生的不一致问题提出约束原则，从而保证了模块间连接的正确性．由于划分后产生的货物本体模块依然较大，根据货物专业领域的知识特点将其细化为多个模块，这样模块间的关系呈现树状结构，并用程序将模块连接．在此基础上．优化了基于本体和规则的物流管理系统．实验表明，模块化技术将推理限制在较小的范围之内，降低了推理复杂度，大大减少了系统内存消耗，提高了系统响应速度，且本体模块易维护和复用．

Research and Implementation of Ontology Modularization for Logistics

Modularization was introduced to logistic ontology to solve the problem of the maintainability and usability of large logistic ontology. The definition of ontology module and the division principles for the logistic problem domain were proposed,and assertions were defined to link the ontology modules to represent knowledge in different contexts. Considering that inconsistency may occur during linking the modules, constraints were used to guarantee the accuracy of links between modules. As the cargo module was still large after modularization, cargo module was decomposed into multi-modules accord- ing to the characteristic of cargo field. Therefore the relationship between the modules was restricted to be simple trees and modules were linked by procedures. With the method proposed in this paper,the logistic system based on ontology and rule was optimized. The experiments show that the logistic ontology modularization restricts the reasoning in an acceptable scope and simplifies the complexity of reasoning. The resource usage and the response time of the system are reduced. Meanwhile, the logistic ontology modularization enhances the maintenance and reusability of ontology modules.