1. 1 RDF Tools Brian Kelly UKOLN University of Bath Bath, BA2 7AY http://www.ukoln.ac.uk/ UKOLN is funded by the British Library Research and Innovation Centre, the Joint Information Systems Committee of the Higher Education Funding Councils, as well as by project funding from the JISCs Electronic Libraries Programme and the European Union. UKOLN also receives support from the University of Bath where it is based.

2. 2 Contents RDF Recap RDF Tools RDF applications Creating RDF Using RDF Issues

3. 3 RDF RDF: The Resource Description Framework Can be regarded as: –A framework for metadata applications –A framework for "knowledge representation" RDF Model represented using XML More than XML - based on a mathematical model which defines relationships

4. 4 RDF Browser Support Mozilla (Netscape's source code release) includes support for RDF This example shows a sitemapping application The Hotwired and Netscape websites contain a link to an RDF site map http://www.netscape.com/

5. 5 RDF Sitemap For Netscape Note this has been edited slightly This is not valid RDF!!

6. 6 RDF Browser Support (2) Mozilla also provides RDF support for: History list Bookmarks (illustrated) File store Can also link to third party RDF schemas One RDF application uses link information (from AltaVista) to give a map of the most popular resources linking to the site you're visiting. Applications: End user navigation Collaborative tools Robots Software agents Applications: End user navigation Collaborative tools Robots Software agents

7. 7 Using RDF IBM's Java Central Station is a central repository of information about Java applications on the Web. The robot software stores all information in RDF http://www.ibm.com/java/

8. 8 Creating RDF - Reggie Reggie is a generic metadata editing tool which processes a schema definition file. It supports a number of metadata schemes including Dublin Core, GILS, EDNA and AGLS. Output can be in HTML 2.0, HTML 4.0 or RDF formats. Reggie is a Java tool. http://metadata.net/dstc/

9. 9 Creating RDF - PrismEd Andrew Waugh, CSIRO gave paper at WWW 7 on "Specifying Metadata Standards for Metadata Tool Configuration" Paper described costs of creating metadata and proposed reducing costs by using a generic metadata editor. See his paper at The PrismEd Java editor demonstrates these principles

10. 10 Creating RDF - XML for RDF IBM's RDF For XML tool is described as "a Java implementation of the RDF specification for creating technologies that search for data and describe, categorize, rate, and otherwise manipulate the data" http://www.alphaworks.ibm.com/ formula/rdfxml

11. 11 Creating RDF - DC-Dot UKOLN's DC-Dot tool for creating Dublin Core metadata is being developed with a new user interface. DC-Dot supports RDF as an output format The original interface is available at http://www.ukoln.ac.uk/ metadata/dcdot/ The image above shows the new (unreleased) interface The original interface is available at http://www.ukoln.ac.uk/ metadata/dcdot/ The image above shows the new (unreleased) interface

12. 12 RDF Developments Roadmap For RDF In Mozilla Following suggestions made: –Z39.50 backend parser –MARC parser –LDAP to be completed –Support for local filestore –Netscape cache See Roadmap from

13. 13 Issues Models for RDF Authoring Tools Dedicated applications Add-on to commercial authoring tools Automated Creation of RDF Avoid file-based approach Use automated tools to create RDF Creation of Schemas How many schemas? Granularity of schemas? Timeliness Are the specs stable? Is it timely?