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Subject: Re: [topicmaps-comment] Re: RDF/Topic Maps: late/lazy reificationvs.early/preemptive reification
Piotr Kaminski wrote: > > [Thomas B. Passin] > > 2) We make each of the member elements of the club association the > subject > > of a topic (thus reifying the member). Now we can assert (using an > > association) who the sponsor of that person for that club is, and we do > not > > have to dismember or change anything we already have in the map, unless > it > > is to make sure that we have one member arc per person, nor do we have > to > > change the meaning of the original "cluc" association. > > Could you expand on this, perhaps giving an example in XTM format? It > sounds like exactly what's needed, though it also resembles manual > reification. Going into hopefully only enough detail to point out some direction, you'd add an ID on each <member> element and use that as the referent in a topic that reifies the member: <topicMap> <topic id="member-of-club"/> <topic id="person1"/> <topic id="person2"/> <association> <instanceOf xlink:href="#member-of-club"/> <member id="m1"> <topicRef xlink:href="#person1"/> </member> <member id="m2"> <topicRef xlink:href="#person2"/> </member> ... </association> <topic id="reif-m1"> <subjectIdentity> <subjectIndicatorRef xlink:href="#m1"/> </subjectIdentity> ... </topic> <topic id="reif-m2"> <subjectIdentity> <subjectIndicatorRef xlink:href="#m2"/> </subjectIdentity> ... </topic> </topicMap> That is, if I understand the example correctly... Murray ........................................................................... Murray Altheim <mailto:murray.altheim@sun.com> XML Technology Center Sun Microsystems, Inc., MS MPK17-102, 1601 Willow Rd., Menlo Park, CA 94025 In the evening The rice leaves in the garden Rustle in the autumn wind That blows through my reed hut. -- Minamoto no Tsunenobu
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