- From: Pat Hayes <phayes@ihmc.us>
- Date: Mon, 13 Feb 2006 16:24:01 -0600
- To: Jim Hendler <hendler@cs.umd.edu>
- Cc: <public-semweb-lifesci@w3.org>
>At 14:46 -0600 2/13/06, Pat Hayes wrote: >>> >>>The point I'm trying to make is this: The concept of "structuredness" is >>>relative and context-sensitive. >> >>Hear, hear. Well said. >> >>Pat Hayes >> > > >FWIW, Structured, unstructured and >semi-structured, although non-precise concepts >in common language and (esp) philosophy, have >well-defined and precise meanings in database >jargon" -- most database books have decent >definitions that are consistent with: > unstructured - NL text > semi-structured - unstructured fields within a structured DB context > structured - relational model (or similar) >(those papers with technical definitions tend to >get ugly and recourse to relational calculus, so >these overly simplified definitions should >suffice for now) Well, OK, but those categories don't exhaust the possibilities. What about NL text with RDF-based XML markup? What about XHTML with RDF markup? What about common logic text? What about free text that has an associated lexicon which is linked to concepts described by an OWL ontology? Etc.. Pat >that said, in the spirit of this particular >thread, I think we should be careful and, if we >mean to use it in a DB context, make it clear in >any document that uses the term (i.e. >"structured database" v. "structured data" which >are very different in some contexts) > -JH > >-- >Professor James Hendler Director >Joint Institute for Knowledge Discovery 301-405-2696 >UMIACS, Univ of Maryland 301-314-9734 (Fax) >College Park, MD 20742 http://www.cs.umd.edu/~hendler >Web Log: http://www.mindswap.org/blog/author/hendler -- --------------------------------------------------------------------- IHMC (850)434 8903 or (650)494 3973 home 40 South Alcaniz St. (850)202 4416 office Pensacola (850)202 4440 fax FL 32502 (850)291 0667 cell phayesAT-SIGNihmc.us http://www.ihmc.us/users/phayes
Received on Monday, 13 February 2006 22:24:20 UTC