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Classification and Thesauri – The BIOME discussion

Classification and Thesauri – The BIOME discussion. BIOME – Health, Life & Medical Sciences Gateway Veterinary sciences (VetGate) Natural World Health and medicine (OMNI) Biological research (Bioresearch) Agriculture, forestry and food (Agrifor). General issues.

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Classification and Thesauri – The BIOME discussion

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  1. Classification and Thesauri – The BIOME discussion • BIOME – Health, Life & Medical Sciences Gateway • Veterinary sciences (VetGate) • Natural World • Health and medicine (OMNI) • Biological research (Bioresearch) • Agriculture, forestry and food (Agrifor)

  2. General issues • No single thesaurus or classification covers all these areas in sufficient depth • User communities are familiar with different schemes • Medical: MeSH; NLM • Agriculture: CAB Thesaurus, Agrovoc, FSTA; DDC, UDC • Natural World: LCSH; DDC

  3. Thesaurus • Each hublet will use thesaurus of its choice • Users can search in terminology they know

  4. Classification • For cross searching of hublets common scheme necessary

  5. Classification • Each hublet could use 2 schemes: • Subject specific, in detail • Common, broader • Or one: • Each hublet uses its own preference • Higher level terms of each scheme mapped to single classification used for cross-searching

  6. Classification • Second approach preferred, but significant effort needed in mapping • Dewey/UDC mapping already done for SOSIG/BizEd (social science) gateways – http://www.desire.org/results/discovery/cat/mapclass_des.htm

  7. Classification • Probable outcome: • OMNI. VetGate, Bioresearch: NLM • Natural World: Dewey • Agrifor: UDC/FDC or Dewey (or both)

  8. Classification • To be resolved: • Choice of universal scheme for cross browsing • Mapping of higher level terms to hublet level terms • Possibly two views of data as you browse down from BIOME to hublet

  9. Thesauri • Each hublet will choose its own • VetGate, OMNI, Bioresearch: MeSH • Natural World: LCSH + geographical list (Getty?) + taxonomic list (Species 2000, ITIS) • And/or Biosis • Agrifor: coice between CAB, Agrovoc, FSTA

  10. Thesauri • Issues: • Cost of acquisition – is it free? • Cost of use: needs to be free • Is it hierarchical – could add added value

  11. Thesauri - problems • Too many terms mean similar sites are differently described and so not found together • Users get lost • Too few terms mean too many hits • May not be possible to indicate correct context

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