In general, there are three different directions for ontology integration: single ontology approach, multi ontology approach and hybrid ontology approach.
本体整合大体上有三个不同的方向：单本体方法、多本体方法和混合本体方法。
The role-based user management and the multi-version mechanism were used to support collaborative ontology development of users.
它们分别采用基于角色的用户管理和多版本机制来支持多用户协同的本体开发；
For the complex ontology, the concepts which are presented in the ontology have the multi-attribute character.
对于复杂的本体，通常表现本体中的概念具有多属性特征。
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