>Some XML Schema primitive datatypes are impossible to use as RDF >datatypes. Therefore XSD intepretations are ill-defined. > >The problematic datatypes include: >duration - because equality in its value space is not well defined >QName - because there is no fixed lexical-to-value mapping >ENTITY - because there is no fixed value space >NOTATION - because there is no fixed lexical space I would say that these cases are not impossible to use, but rather that certain entailments involving them are not well-defined. Section 4.3 of the semantics document explains which entailments require which kinds of information about a datatype. In the cases where such information is unobtainable or undefined, the corresponding entailments will not be supported. Pat -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32501 (850)291 0667 cell phayes@ai.uwf.edu http://www.coginst.uwf.edu/~phayes s.pam@ai.uwf.edu for spamReceived on Sunday, 26 January 2003 18:22:15 EST
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