fulfilling the DESIRE for knowledge

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Presentation transcript:

fulfilling the DESIRE for knowledge Emma.Worsfold@Bristol.ac.uk Subject Gateways fulfilling the DESIRE for knowledge Emma.Worsfold@Bristol.ac.uk

Aim of subject gateways to help users locate relevant and high quality resources on the Internet

Subject gateways ... “doing for on-line information resources what librarians do for books” Internet search and retrieval tool database of Internet resource descriptions selection cataloguing classification

Information intermediaries serving specific user groups identifying information needs building targeted and quality collections “trusted third parties” (Clifford Lynch) filter the Internet not prone to word stuffing/metadata spamming!

Cataloguing Internet resources (… or creating “human-generated metadata”) title keywords description URL up to 60 other attributes

Adhering to metadata standards Dublin Core MARC ROADS / IAFA

Classifying Internet resources (organising resources under subject categories) 159.9 PSYCHOLOGY 159.9.01 Theories, Laws, Metaphysical Psychology 150.07 Experimental Psychology 159.91 Physiological Psychology 159.92 mental development 159.93 sensory perception

What’s the difference between a subject gateway and a search engine?

Search Engines built by robots exhaustive indexing automatically generated metadata high recall, low precision

Subject gateways Built by humans selective catalogues human generated metadata low recall, high precision

An example - SOSIG

The UK gateways Medicine OMNI Engineering EEVL Art ADAM Social Science SOSIG Business Biz/ed History History General BUBL/NISS

Other gateways in Europe The Netherlands (DutchESS) Finnish Virtual Library Project Germany Sweden (EELS)

Elsewhere ... Scout Report Signpost NetFirst Any more?

What can users expect to see in the future? Bigger collections International collections collections covering all subjects

Cross-searching

Harvesting Combine Harvester bigger databases still some quality control

Distributed Cataloguing WWW-based cataloguing avoiding duplicated effort improving coverage

A Vision for the Future an integrated virtual library for end-users enabling users to take advantage of subject expertise around the World

What this depends on International metadata standards International co-operation and strategy The technologies are here - it’s the human factor that needs attention!

DESIRE Guidelines on developing subject gateways Research in Internet cataloguing and indexing International WORKSHOPS in 1999 “The Information Gateways Handbook”

Internet Detective A Web-based tutorial on evaluating the quality of Internet information

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