MR³

Web Site

• http://mrcube.org/

What is MR³ ?

MR³ (Meta-Model Management based on RDFs Revision Reflection) is an editing tool of RDF-based contents developed for managing a relationship between RDF and RDFS contents.

Introduction

The Semantic Web is one of the most promised candidates as the Web tomorrow, whose basis is on RDF and RDF Schema recommended by the World Wide Web Consortium. The purpose of the idea is to make the data on the Web available not only for displaying but also for automation, integration and reuse of data across various applications. At the moment, a number of supporting environment have been developed as the adopted tools of traditional knowledge engineering based ontologies. These products are mostly concentrating on creating ontologies and managing ontology-based semantic markup. From the standpoint of a significance of information lifecycle on the Semantic Web, in this work, an editing tool of RDF-based contents is developed for managing a relationship between RDF and RDFS contents.

Features

MR³ provides the three main functions to edit and to manage the several sorts of relationship among RDF and RDFS contents as follows.

Graphical Editing of RDF Descriptions

Based on the semantics of RDF data model, the tool supports to edit the resource-property-value relation.

Graphical Editing of RDFS Descriptions

Based on the semantics of RDF Schema model, the tool supports to edit the class-subclass relation and to add the information of properties such as range, domain, sub-property, and so on.

Meta-Model Management Facilities

In order to reflect the change of RDF or RDFS contents on the other, the tool supports the correspondence between them.

The above function consisted of the following sub-functions.

• Transformation of RDF resources into graphical representation of RDF data model, including the management of different RDF resources and mapping the additional information to RDFS.
• Transformation of RDF data graph into RDF resource, including name-space management.
• Transformation of RDFS resources into graphical representation of RDF data model, including the management of different RDFS resources and visualize the side effects to the corresponding RDF resource.
• Transformation of RDFS data graph into RDFS resource, including name-space management.
• Reflecting the change of RDF resources on the corresponding RDFS resources, not only editing RDF resources but also loading new resources.
• Reflecting the change of RDFS resources on the corresponding RDF resources, as the same time above.

License

MR³ is Free Software; you may redistribute it and/or modify it under the terms of the GNU Generic Public License as published by the Free Software Foundation; either version 2, or (at your option) any later version.

Acknowledgements

MR³ uses the following libraries.

• JGraph and JGraphAddons(License]
• Apache Jena(License)
• Drawing Graphs with VGJ(License)
• Material Design icons by Google(License)

Project Member

• Takeshi Morita (Faculty of Science and Technology, Keio University, Japan)
• Naoki Fukuta (Department of Computer Science, Shizuoka University, Japan)
• Noriaki Izumi (National Institute of Advanced Industrial Science and Technology, Japan)
• Takahira Yamaguchi (Faculty of Science and Technology, Keio University, Japan)

Contact

• Takeshi Morita (t_morita@keio.jp)