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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: WSIO vs. Semantic Web
 On Wednesday 13 February 2002 16:56, Dare Obasanjo wrote: > This semantic web that you describe reminds me of all the hype about how > XML would make search engines smarter because it allowed people to add > metadata to words in documents. Yep! > However, no one explained how the author > of the document would know to tag all data in the document in a manner > that would satisfy all search engines. For instance, a search for "Dare > Obasanjo" could be looking for me in many contexts, it could be > searching for Dare the former teaching assistant at GA Tech, Dare the > poster to XML-DEV, Dare the Microsoft employee, or Dare the author of > articles that have appeared in various places online. So now is the onus > on me to tag my name with all the aforementioned metadata and more > whenever I enter information about myself? Personally, I'd do something like defining a nice namespace with some special attributes and elements in it that could be inserted into documents in such a way that processors not interested in those elements just ignore them (as is done in RDDL embedded in XHTML), such as: <html xmlns:semweb="..."> <semweb:relate type="urn:standard-relations:like-enjoy-affection"> <p>Alaric likes cats</p> <semweb:object> mailto:alaric@a... </semweb:object> <semweb:object> urn:standard-group-nouns:living/feline/domesticated </semweb:object> </semweb:relate> </html> Those libraries of common concepts in a nice convenient set of URN namespaces is pretty crucial to making the thing hang together. The existence of XHTML (the <p> element) inside the semweb:relate can be used by intelligent software to present a comment or annotation for this relationship. It also seems logical to associate the informal English specification of the relationship with the formal one. Such a relation could also be embedded around some SVG that happened to draw an arrow between two objects. The objects themselves could be embedded in <semweb:represents object="..."> elements, where the '...' is the URN of the actual object represented by that SVG shape... imagine the above assertion about me and cats expressed as an ER diagram. ABS -- Alaric B. Snell http://www.alaric-snell.com/ http://RFC.net/ http://www.warhead.org.uk/ Any sufficiently advanced technology can be emulated in software 
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