Exclusions need to have links to the excluded items

[FlavioRizzolo]

Exclusions in XKOS are properties that are extensions of skos:scopeNote, which are intended to capture text only. It is suggested elsewhere(*) that notes can be represented as “XHTML fragments, thereby opening the possibility of rendering the references to other items as HTML links”. The problem is that such a solution won’t work in non-XHTML environments, limiting interoperability.

(*) D. Gillman, F. Cotton and Y. Jaques, "Extended Knowledge Organization System (XKOS)," in UNECE Work Session on Statistical Metadata, Geneva, 2013.

[nichtich]

In our JSKOS based applications we support links in notes based on concept notations. See this examples of DDC notes:

641.862 Frozen desserts
For ices, sherbet, sorbet, see 641.863

If notation 641.863 can be detected by a regular expression and if concept URIs are based on notations, then we can add a hyperlink into the note. In this case (DDC is more complex then many other classifications), the required fields are:

• uriPattern: ^http://dewey.info/class/(.+)/e23/$
• notationPattern: [0-9][0-9]?|[0-9]{3}(-[0-9]{3})?|[0-9]{3}.[0-9]+(-[0-9]{3}.[0-9]+)?|[1-9][A-Z]?--[0-9]+|[1-9][A-Z]?--[0-9]+(-[1-9][A-Z]?--[0-9]+)?

uriPattern is void:RegexPattern. notationPattern has not RDF property yet, maybe this is a possible candidate for extension of XKOS?