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Metadata for the Web

Metadata for the Web. Andy Powell UKOLN University of Bath http://www.ukoln.ac.uk/metadata. Aims?. Think about uses for metadata, i.e. services… Resource discovery Web-site management Practicalities… Tools Information flow The future. We are not….

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Metadata for the Web

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  1. Metadata for the Web Andy Powell UKOLN University of Bath http://www.ukoln.ac.uk/metadata

  2. Aims? • Think about uses for metadata, i.e. services… • Resource discovery • Web-site management • Practicalities… • Tools • Information flow • The future...

  3. We are not… • …going to come up with all the answers... • …or any answers!

  4. Knowing me, knowing you(a ha) • Metadata? • HTML <META> tags? • Using them? • Dublin Core? • Using it? • Webmaster? • Local search engines?

  5. Three problems... • Searching Alta Vista for'University of Bath' • Searching within a university for all course module details • Searching within a university for out of date pages

  6. Alta Vista Metadata Example <HTML><HEAD> <TITLE>UKOLN Home Page</TITLE> <META NAME="keywords" CONTENT="national centre, network information support, library community, awareness, research, information services, public library networking, bibliographic management, distributed library systems, metadata, resource discovery, conferences, lectures, workshops"> <META NAME="description" CONTENT="UKOLN is a national centre for support in network information management in the library and information communities. It provides awareness, research and information services"> </HEAD> <BODY> ...

  7. Group work - 1 • Groups of 3 or 4 • Discuss the example user-services and Web-site administration functions • Can you think of others? • Try and identify what metadata attributes are required for the examples

  8. Group work - 2 • Groups of 3 or 4. List… • File formats • Which file formats are made available on your Web-site? • Information types • Try to categorise the different types of information you make available - prospectus, course module details, job ads, etc • Subject terms • Is a list of subject terms (physics, chemistry, maths, etc) available for your site?

  9. Dublin Core • Ongoing development since about 1995 • Aimed at Web resource discovery primarily • Used in a growing number of projects currently • Not aimed at Web-site administration issues

  10. Title Subject Description Creator Publisher Contributor Date Type Format Identifier Source Language Relation Coverage Rights Dublin Core - elements • 15 element core metadata set

  11. Dublin Core - HTML Example <HTML><HEAD> <TITLE>UKOLN Home Page</TITLE> <META NAME="DC.Title” CONTENT="UKOLN: UK Office for Library and Information Networking"> <META NAME="DC.Subject" CONTENT="national centre, network information support, library community, awareness, research, information services, public library networking, bibliographic management, distributed library systems, metadata, resource discovery, conferences, lectures, workshops"> <META NAME="DC.Description" CONTENT="UKOLN is a national centre for support in network information management in the library and information communities. It provides awareness, research and information services"> <META NAME="DC.Creator" CONTENT=”Isobel Stark"> </HEAD> ...

  12. Metadata tools • HTML or text editors • tedious, hard to do bulk-changes • Web-site management tools • NetObjects Fusion • Home grown solutions based on SSIs • Other?

  13. Who maintains metadata? • Authors • Webmaster • Registry • The library

  14. Which pages? • Which pages should have embedded metadata? • All? • 'Home' pages? • Selected pages? • Just the university home page?

  15. Using metadata... • Building search engines… • Most Web-site indexing tools use keywords and description? • Harvest • Isite • SWISH-E • ht://Dig • Issues… • Frames • Web-view vs. filesystem view • Directory structure

  16. The future... • XML • Resource Description Framework (RDF) • Complex • Needs tools • There will be tools…?

  17. Dublin Core - RDF Example <?xml:namespace href="http://www.w3c.org/RDF/" as="RDF"?> <?xml:namespace href="http://purl.oclc.org/RDF/DC/" as="DC"?> <RDF:RDF> <RDF:Description RDF:HREF="http://www.ukoln.ac.uk/"> <DC:Title>UKOLN: UK Office for Library and Information Networking</DC:Title> <DC:Creator>UKOLN Information Services Group</DC:Creator> <DC:Subject> national centre, network information support, library community, awareness, research, information services, public library networking, bibliographic management, distributed library systems, metadata, resource discovery, conferences, lectures, workshops </DC:Subject> <DC:Description> UKOLN is a national centre for support in network information management in the library and information communities. It provides awareness, research and information services </DC:Description> </RDF:Description> </RDF:RDF>

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