Rule interchange has become one of the most important issues in the Semantic Web. As a recommendation of the W3C (WWW Consortium), RIF (Rule Interchange Format) is dedicated to rule interchange between different rule languages. To be a general rule interchange format, RIF should first support rule interchange with SWRL (Semantic Web Rule Language), RuleML (Rule Markup Language), R2ML (REWERSE R...

Currently, there is no generally adopted standard for a Semantic Web rule language, but there are several important evolving proposals such as RuleML, Semantic Web Rule Language (SWRL), and REWERSE Rule Markup Language (R2ML). Having that in mind, one may expect that various systems (e.g. Web services) will use different rule languages, and thus introduce problems in sharing rules. In this pape...

Role is very important in ontology engineering. Although OWL has been available for ontology representation, consideration about roles is not enough. It can cause to decrease semantic interoperability of ontologies because of conceptual gaps between OWL and developers. To overcome this difficulty, this paper presents some consideration for dealing with roles using OWL.

Social applications are one of the fastest growing areas in the Web. However, privacy issues ensue if all information of all users of these applications is stored on a single computer system. With small extensions to Semantic Web technologies and Linked Data concepts, a distributed approach to the social web is possible, where users retain fine-grained control over their data and are still able...

We present an ontology to represent generic teaching strategies in an intelligent tutoring system framework. The learning contents, learner’s state, and system actions are modeled in just enough detail to support the definition of teaching strategies. Teaching strategies are organized into a hierarchy of teaching goals, and are represented using SWRL rules.

Access control is a central problem in confidentiality management, in particular in the healthcare domain, where many stakeholders require access to patients' health records. Situation-Based Access Control (SitBAC) is a conceptual model that allows for modeling healthcare scenarios of data-access requests; thus it can be used to formulate data-access policies, where health organizations can spe...

Recent research has created a multitude of argumentation models with varying degrees of formality. In this paper, we look at the feasibility of using semantic web languages like OWL and SWRL as an unbiased template for developing such models. We then present the Argumentation Ontology (ArgOn) as an example.

We propose a description-logic style extension of OWL DL, which includes DL-safe variable SWRL and seamlessly integrates datalog rules. Our language also sports a tractable fragment, which we call ELP 2, covering OWL EL, OWL RL, most of OWL QL, and variable restricted datalog.

The DL Safe SWRL Rules task force was tasked at OWLED 2007 to generate a proposal for how to add decidable and implementable rules to OWL in a manner consistent with the Semantic Web. This is the initial report from the task force.