关键词: 本体, 访问控制, 基于角色, 语义关联, 推理泄露

Abstract: Ontologies，which can provide a shared and common understanding of some domain that can be communicated across people and computers，place the key function in the semantic Web.However，due to lack of essential access control mechanisms，the dissemination of ontologies can result in revealing sensitive information in the ontology documents.This paper proposes a Semantic-associated Role-Based Access Control（S-RBAC） model for the OWL ontology.By extending the traditional RBAC model based on the semantic association of the ontology elements，S-RBAC model not only can provide essential control mechanisms for the direct access to ontologies and their elements，but also can account for the inference disclosure problems induced by the semantic association of the ontology elements.

Key words: ontology, access control, role-based, semantic association, inference disclosure