Re: summary of some cwm/euler implementation experience w.r.t.accessing RDF collections

In message 
<677CE4DD24B12C4B9FA138534E29FB1D0ACDBA@exchange11.fed.cclrc.ac.uk> on 
Mon, 10 Oct 2005, "Miles, AJ (Alistair)" <A.J.Miles@rl.ac.uk> wrote
> (This query illustrates how more complex thesauri such as the Art & 
>Architecture Thesaurus that have things called 'node labels' can be 
>made to interoperate with less complex thesauri that don't.)

Be careful in using  AAT as an example, because they confuse three 
different things, combining into a single category of what they call 
"guide terms"

a. Node labels containing names of facets
b. Node labels containing characteristics of division
c. Thesaurus terms (descriptors) which label concepts that form steps in 
the hierarchical structure but which they do not think appropriate for 
use in indexing

Personally I would have preferred to have different names for a. and b. 
but the British Standards working party decided to call them both "node 
labels", with a distinguishing phrase. These do not label concepts.

The node labels of type a. that introduce new facets are needed only 
when creating a display structured as a classification, in which 
concepts from more than one facet are brought together. They are not 
needed in presenting a hierarchical display built simply on BT/NT 
relationships, which is by definition restricted to a single facet.

I think that terms in category c. should be treated as normal terms, 
possibly with a note saying "Use a more specific term if possible". 
There are cases where these terms do need to be used in indexing, if a 
document covers a broad topic or if it covers a topic that is not more 
specifically provided for in the thesaurus.

Leonard

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Received on Wednesday, 12 October 2005 06:11:02 UTC