- From: Jakob Voss <jakob.voss@gbv.de>
- Date: Mon, 04 Sep 2006 10:38:50 +0200
- To: public-esw-thes@w3.org
Joseph Tennis wrote: > DDC has evolved over the 19th into the 21st century. During that time > concepts are represented in various ways with various relationships (as > seen to some degree in Notation and See Also references). > > In DDC in 1911 we have the concept of Eugenics as a Science. It has > changed. How do we model such changes in SKOS? You don't want to model al ethical, social, scientific etc. discussion about concepts in SKOS, do you? SKOS is not Cyc. A search in DDC 21 for "eugenics" brings: 176 Ethics of sex and reproduction 363.92 Population quality 363.97 Sterilization 364.4 Prevention of crime and delinquency 613.94 Birth control and reproductive technology As far as I know 363.92 was called "Eugenics" before. There are still publications in this area but of course the methods and goals have changed - see http://www.georgetown.edu/research/nrcbl/publications/scopenotes/sn28.htm for an annotated bibliography. To know if and how the changes between DDC 1911 and DDC edition 21 have to be modeled we have to look at the books indexed under eugenics and look how they would be classified today - then you can create a mapping. >> My naive impression is that this could cause problems later, as it's >> modifying (/adding to) the Concept part, when (if I understand >> correctly) the problem is actually with the modelling of scheme >> changes. This looks like an n-ary relation tying together a specific >> scheme, specific change note and (common) concept. >> >> A change note which applied to both to a concept and a scheme might >> help, but there's a snag in that changeNote/historyNote are >> properties. I wonder if you made a class Note this might help: >> >> Concept >> historyNote >> Note >> associatedWithScheme >> ConceptScheme >> >> >> Or maybe you could maybe start from the scheme, with a subclass >> AnnotatedScheme which could include a collection of change notes. >> > > Right! So that's the issue! How can SKOS handle this elegantly? We > don't want a clumsy solution to something that every scheme that goes > through versions is going to have to deal with. Ok, now maybe I finally understand you. You want version in notes for concepts that stay the same. Well, at least I would like that ;-) How about this: <skos:Concept rdf:about="..."> <skos:prefLabel xml:lang="en">Eugenics</skos:prefLabel> <skos:note rdf:resource="http://en.wikipedia.org/wiki/Eugenics"/> </skos:Concept> http://en.wikipedia.org/wiki/Eugenics provides full versioning since it's a Wiki but the concepts stays the same (more or less). Greetings, Jakob
Received on Monday, 4 September 2006 08:38:11 UTC