Extracting role hierarchies from authentication data flows
Current Web-based applications use XML-based formats to represent user descriptions exchanged between parties of a distributed computation. This paper introduces some techniques for extracting frequent patterns of user attributes from this XML flow. Then, patterns are used for bottom-up construction of a role ontology, which is then passed to an ontology engineer for a final pruning. The result is a user ontology built by combining topdown and bottom-up approaches, supporting extraction and validation of knowledge about 'typical' users particularly suitable for fine grained access control applications.
role hierarchies data flow xml flow