访问控制中基于粗糙集的授权规则知识发现

为实现访问控制中客体对主体预授权的准确和及时，针对基于信任的访问控制信任和权限的映射问题，将成功交互的实体授权信息作为用于知识发现的数据决策信息表，结合访问控制的授权规则，提出了一种基于粗糙集的授权规则知识发现方法，实现授权规则中的属性约简、知识决策规则的提取.最后，通过算例分析验证了基于粗糙集的授权规则知识发现方法的有效性.

Knowledge Discovery of Authorization Rule Based on Rough Set in Trust Based Access Control

To achieve accurate and timely pre-authorization of access from a subject to an object in access control , a method on knowledge discovery of authorization rules was proposed based on rough set theory to reduce knowledge attributes and to extract decision rules. According to the main characteristics of map-pings between trust levels and access rights in trust based access control and combined with access au-thorization rules, this method makes successful use of the interactive entity authorization information as the data decision information table for the discovery of knowledge. Analysis shows that both the knowl-edge discovery method and the rough set based authorization rules are effective.