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Re: Ordering concepts in a Tree display

From: Jakob Voss <jakob.voss@gbv.de>
Date: Fri, 14 Jan 2011 13:15:17 +0100
Message-ID: <4D303E55.6080309@gbv.de>
To: SKOS <public-esw-thes@w3.org>
Hi Christophe,

> Does anyone have designed a way to specify concept ordering when
> displaying a tree of concepts?

To ensure *any* ordering, the concept scheme must be encoded with
http://www.w3.org/TR/skos-reference/#collections

> Usually, alphabetical ordering is the best to display narrower concepts
> of a given concept.

You could also order by number first displaying NTs that have other NRs 
followed by leafs, or you could order by number of documents, indexed 
with the concepts, or by skos:notation (if given) etc.

But sure, the most common way of sorting is alphabetical - which depends 
on the language, by the way! I would always assume, that there is no 
natural order of elements in RDF data unless it is explicitly stated. 
But using ordering in RDF is a pain in the a**: In most cases you first 
need to in infer some entailment and do validity checks on the lists. 
Otherwise your ordering could turn out to be a tree or to have circles!

Cheers
Jakob

-- 
Jakob Vo▀ <jakob.voss@gbv.de>, skype: nichtich
Verbundzentrale des GBV (VZG) / Common Library Network
Platz der Goettinger Sieben 1, 37073 G÷ttingen, Germany
+49 (0)551 39-10242, http://www.gbv.de
Received on Friday, 14 January 2011 12:16:15 UTC

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