Dear David, dear all, On Thursday 30 October 2008 23:44:46 David Carlisle wrote: > > what was the design rationale for having different namespaces and > > different element names for the same metadata markup in CDs, CD groups, > > and signature dictionaries? > > This seems to be a fairly natural consequence of the decision to have > a separate namespace for cd groups and sts.
Sorry, I didn't have the fact that we have separate namespaces for these fully on my mind when issuing my objections. Maybe I was biased by OMDoc here, as in OMDoc all those different things are in the same namespace and can even coexist in the same document -- but I'm not implying that this would make sense in the OpenMath case. > STS is deliberately kept at a distance from the core OM, it is not the only > possible type system for OM, and so should not have a privileged position of > using the CD namespace. I agree. > > It looks like poor man's XML namespaces, > > Not sure what you mean by this. As it happens the basic design of > CDGroups etc predates namespaces, but I don't think the use of > multiple namespaces in each file (which appears to be what you are > suggesting) is an improvement. Now I have to rephrase my original message. One thing that actually struck me was the fact that the local names of the elements in different namespaces also have a reference to the namespace. Why not just cd:ReviewDate and cds:ReviewDate, or cd:Name and cdg:Name? XML-syntactically that wouldn't be a problem, and I think that the human author does not need additional mnemonics like the CDGroup in CDGroupName, as he knows anyway what he is editing, be it a CD, a CD group, or a signature dictionary. > CDGroups are the basic of the navigation construct of the CD area of > openmath.org, why do you say they are infrequently used? Oh, of course… What I rather meant was: Does anybody else except ourselves use them? People "out there" use CDs, and I think they also use signatures, but do they maintain their own CD groups? Cheers, Christoph -- Christoph Lange, Jacobs Univ. Bremen, http://kwarc.info/clange, Skype duke4701
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