[Seavox] Draft mapping

[Luis Bermudez]

Hi Roy,

Great you finally started making some progress.

1) I am interested in the process you are following to do these  
mappings. What tool(s) are you using ?

2) SKOS provides a good framework to map resources: http://www.w3.org/ 
2004/02/skos/mapping/spec/. Which I plan to implement with VINE.

3) About broader and synonym, SKOS defines the following:

- If 'concept A has-broad-match concept B' then the set of resources  
properly indexed against concept A is a subset of the set of  
resources properly indexed against concept B.

- If two concepts are an 'exact-match' then the set of resources  
properly indexed against the first concept is identical to the set of  
resources properly indexed against the second. Therefore the two  
concepts may be interchanged in queries and subject-based indexes.

My concern is that we have to be very careful about synonyms or  
"exact-match", for example:

BODC Chlorophyll pigment concentrations in the water column =??
GCMD EARTH SCIENCE > Hydrosphere > Water Quality/Water Chemistry >  
Chlorophyll

Cheers,

-Luis


On Jan 31, 2007, at 7:07 AM, Roy Lowry wrote:

> Dear All,
>
> I'm starting to dip my toe into the development of a parameter  
> ontology that will eventually cover BODC Discovery Vocabulary, GCMD  
> Science Keywords and CF Standard Names.  The big step forward from  
> the existing map is that this one now introduces the simple  
> thesaurus relationships narrower, broader and synonymous rather  
> than just an indication that the terms are related.
>
> Attached is my first bash covering about 5% of the BODC PDV to  
> GCMD.  It's as an Excel spreadsheet, which I thought would be  
> easiest for most of you, with BODC PDV terms, GCMD terms and the  
> mappings each way.  Any comments welcome before I go into mass  
> production.  One issue causing me unease is  that I've mapped many  
> BODC terms broader even though I think the parameter dimension is  
> synonymous because I see the concept of 'water column' as broader  
> than 'Oceans' - more equivalent to the GCMD 'Hydrosphere', so views  
> on this are of particular interest.  I also now realise that  
> splitting nitrate+nitrite from nitrate in the BODC PDV wasn't a  
> smart move!
>
> Cheers, Roy.
>
> <BODC_GCMD_Map.xls>
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