Many experimental ontologies have been developed for the learning domain for use at different institutions. These ontologies include different OWL/OWL 2 (Web Ontology Language) constructors. However, it is not clear which OWL 2 constructors are the most appropriate ones for designing ontologies for the learning domain. It is possible that the constructors used in these learning domain ontologie...

Modular approaches to design and use of ontologies are essential to the success of the Semantic web enterprise. We describe P-OWL (Package-based OWL) which extends OWL, a widely used ontology language that supports modular design, adaptation, use, and reuse of ontologies. P-OWL localizes the semantics of entities and relationships in OWL to modules called packages. P-OWL and the associated tool...

The developers of StarDog OWL/RDF DBMS have pioneered a new use of OWL as a schema language for RDF databases. This is achieved by adding integrity constraints (IC), also expressed in OWL syntax, to the traditional “open-world” OWL axioms. The new database paradigm requires a suitable visual schema editor. We propose here a two-level approach for integrated visual UML-style editing of extended ...

OWL is now very widely used for ontology development and several attempts have been made at incorporating OntoClean analysis into an OWL-based tool. I present here an OWL ontology representing the basic OntoClean distinctions, and a tool and methodology for applying it to OWL ontologies. I briefly touch on the semantic issues implied by using OWL Full syntax to characterize the OntoClean meta-p...

This deliverable presents a restricted variant of the OWL Lite species of the OWL ontology language, called OWL Lite−. OWL Lite− is a strict subset of OWL Lite and there exists a direct translation into the deductive database language Datalog. Thus, any OWL Lite− ontology can be translated into Datalog in order to allow for efficient query answering. It turns out that most current ontologies fa...

Modular approaches to design and use of ontologies are essential to the success of the Semantic web enterprise. We describe P-OWL (Package-based OWL) which extends OWL, a widely used ontology language that supports modular design, adaptation, use, and reuse of ontologies. P-OWL localizes the semantics of entities and relationships in OWL to modules called packages. P-OWL and the associated tool...

This deliverable presents a restricted variant of the OWL Lite species of the OWL ontology language, called OWL Lite−. OWL Lite− is a strict subset of OWL Lite and can be translated directly into the deductive database language Datalog. Thus, any OWL Lite− ontology can be translated into Datalog, in order to allow for efficient query answering. It turns out that most current ontologies fall ins...

OWL 1.1 is a simple extension of the OWL DL species of the W3C OWLWeb Ontology Language. OWL 1.1 has been designed to provide some interesting and useful expressive additions to OWL DL while retaining the desirable characteristics of OWL DL, including decidability and implementability.

SUMMARY In this paper, we propose an interactive domain ontology development environment called DODDLE-OWL. DODDLE-OWL refers to existing ontologies and supports the semi-automatic construction of tax-onomic and other relationships in domain ontologies from documents. Integrating several modules, DODDLE-OWL is a practical and interactive domain ontology development environment. In order to eval...

In this paper, we present MAP2OWL, a software tool that allows the development of OWL ontologies as concept maps. MAP2OWL uses existing OWL constructs to represent conceptual maps; in this way, domain experts develop ontolologies in a graphical conceptual way, not having to be aware of syntactic matters, or issues related to interfaces that were designed for knowledge engineers. MAP2OWL facilit...