- From: Pat Hayes <phayes@ai.uwf.edu>
- Date: Mon, 22 Oct 2001 18:48:15 -0500
- To: jos.deroo.jd@belgium.agfa.com
- Cc: w3c-rdfcore-wg@w3.org
>Pat, you remember the test case given in "interpretation properties" i.e. > > <http://www.w3.org/> <http://example.org/play#xml-cannonicalized> _:bNode1 . > _:bNode1 <http://example.org/enc#hash-sha-1> _:bNode2 . > _:bNode2 <http://example.org/enc#base64> "jd8734djr08347jyd4" . > >Another testcase is > > <http://example.org/play#poleq1> <http://example.org/play#root> _:bNode1 . > _:bNode1 <http://example.org/complex-number#real-part> _:bNode2 . > _:bNode2 <http://example.org/enc#IEEE-754> "3" . > _:bNode1 <http://example.org/complex-number#imaginary-part> _bNode3 . > _:bNode3 <http://example.org/enc#IEEE-754> "4" . > >So I think one could always *describe* the real/abstract >things and "4" is *not* the floating point number 4 ... >the node with label _:bNode3 is standing for that 4 and > <http://example.org/enc#IEEE-754> "4" >is a means to that end and not an end in its own :-) Right, you can do it that way. But see http://lists.w3.org/Archives/Public/w3c-rdfcore-wg/2001Oct/0453.html which I think (I need to check your "nesting" cases) shows that it is also possible to use the other reading, as long as you have enough information in the graph *somewhere* to somehow fix the appropriate data type to use. (And if you don't then all bets are off anyway.) >So I still think the "" delimited thing is just a string >and I also don't think there will be a shortage of bNodes :-) There is no shortage of Lego bricks, either. >Also the "nesting" capability shown in the first testcase >is an interesting feature, isn't it? Indeed it is, and I need to think about it harder over dinner. Pat PS real and imaginary parts of complex numbers seems to me to be a very good motivating example for allowing literals to be subjects, by the way. I would like to be able to write http://example.org/complex-number#imaginary-part rdfs:range xmds:real-number http://example.org/complex-number#imaginary-part rdfs:domain xmds:complex-number "13.6i20.4" http://example.org/complex-number#imaginary-part "13.6" and be referring to numbers (not strings) everywhere. -- --------------------------------------------------------------------- IHMC (850)434 8903 home 40 South Alcaniz St. (850)202 4416 office Pensacola, FL 32501 (850)202 4440 fax phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes
Received on Monday, 22 October 2001 19:48:25 UTC