I detect a need to characterize the range expression - most important of which is whether the range is complete, or whether it excludes (equal) tails on each end. XSD presumes a complete range is being specified, not a subset, is the issue you're raising?
Could an additional facet for "percentage-tails-excluded" effectively communicate this estimate?
On 21.12.2012 10:41, Gregor Hagedorn wrote:
On 21 December 2012 19:36, <jmcclure@hypergrove.com> wrote:The xsd:minInclusive, xsd:maxInclusive, xsd:minExclusive and xsd:maxExclusive facets are absolute expressions not relative +/- expressions, in order to accommodate fast queries. These four facets permit specification of ranges with an unspecified median and ranges with a specified mode, inclusie or exclusive of endpoints, a six-fer. For these reasons I believe the XSD approach is superior for specifying value set when compared to storing the dispersion factors themselves, eg the "3" of +/- 3.yes, provided they are actually tied to the semantics of min. and maximum, which the xsd examples are. As long as the semantics of the proposed "value bracketing" in Wikidata is unknown, their use is questionable if not impossible. If I know something is plus/minus 2 s.d. or plus minus 2 s.e. or 10 to 90 % percentile ... I again can use them to the benefit of the query system. But not without. Gregor _______________________________________________ Wikidata-l mailing list Wikidata-l@lists.wikimedia.org https://lists.wikimedia.org/mailman/listinfo/wikidata-l