Metadata for the Web Andy Powell UKOLN University of Bath

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Presentation transcript:

Metadata for the Web Andy Powell UKOLN University of Bath

2 - TLIG, 31 March 1998 Aims? Think about uses for metadata, i.e. services… Resource discovery Web-site management Practicalities… Tools Information flow The future...

3 - TLIG, 31 March 1998 We are not… …going to come up with all the answers... …or any answers!

4 - TLIG, 31 March 1998 Knowing me, knowing you (a ha) Metadata? HTML tags? Using them? Dublin Core? Using it? Webmaster? Local search engines?

5 - TLIG, 31 March 1998 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for 'University of Bath' Searching within a university for all course module details Searching within a university for out of date pages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 - TLIG, 31 March 1998 Alta Vista Metadata Example UKOLN Home Page...

7 - TLIG, 31 March 1998 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 - TLIG, 31 March 1998 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 - TLIG, 31 March 1998 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 - TLIG, 31 March 1998 Dublin Core - elements Title Subject Description Creator Publisher Contributor Date Type Format Identifier Source Language Relation Coverage Rights 15 element core metadata set

11 - TLIG, 31 March 1998 Dublin Core - HTML Example UKOLN Home Page...

12 - TLIG, 31 March 1998 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 - TLIG, 31 March 1998 Who maintains metadata? Authors Webmaster Registry The library

14 - TLIG, 31 March 1998 Which pages? Which pages should have embedded metadata? All? 'Home' pages? Selected pages? Just the university home page?

15 - TLIG, 31 March 1998 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 - TLIG, 31 March 1998 The future... XML Resource Description Framework (RDF) Complex Needs tools There will be tools…?

17 - TLIG, 31 March 1998 Dublin Core - RDF Example UKOLN: UK Office for Library and Information Networking UKOLN Information Services Group 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 UKOLN is a national centre for support in network information management in the library and information communities. It provides awareness, research and information services