totally agree - hopefully XSD facets provide a solid start to meeting those concrete requrements - thanks.
On 19.12.2012 14:09, Gregor Hagedorn wrote: > On 19 December 2012 20:01, <jmccl...@hypergrove.com> wrote: > >> Hi Gregor - the root of the misconception I likely have about significant digits and the like, is that such is one example of a rendering parameter not a semantic property. > > It is about semantics, not formatting. > > In science and engineering, the number of significant digits is not > used to right align numbers, but to semantically indicate the order of > magnitude of the accuracy and/or precision of a measurement or > quantity. Thus, the weight of a machine can be given as 1.2 t (exact > to +/- 50 kg), 1200 kg (+/- 1 kg), or 1200.000 g. > > This is not part of IEEE floating point numbers, which always have the > type dependent same precision or number of significant digits, > regardless whether this is semantically justified or not. IEEE 754 > standard double always has about 16 decimal significant digits, i.e. > the value 1.2 tons will always be given as 1.200000000000000 tons. > This is good for calculations, but lacks the information for final > rounding. > > Gregor > > _______________________________________________ > Wikidata-l mailing list > Wikidata-l@lists.wikimedia.org > https://lists.wikimedia.org/mailman/listinfo/wikidata-l [1] Links: ------ [1] https://lists.wikimedia.org/mailman/listinfo/wikidata-l
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