rdf and topic maps


	rdf and topic maps

PatParslow

2-27-2008 8:08 AM

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rdf, topic-map

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/14aa69b4-8c80-4256-b79e-5d8e37313b11/DAA7CEC0-71A2-4596-AACA-D60CC5FDC631/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html" href="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html" style="font-size: 11px;">xml.coverpages.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html"><H1 align="center">RDF/Topic Maps and reification</H1></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html">In RDF, reification involves changing the graph that
results from processing interchangeable RDF statements.
In Topic Maps, however, everything is already reified.
No existing arcs need be changed when new information
comes along.  New arcs and nodes are added, and these
additions are the only changes that are required.  </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html">  If some of those
arcs disappear, you may not be able to retrace your
steps.  If, on the other hand, the process of
reification does *not* cause the arcs whose functions
have been duplicated to disappear, then we have a
situation in which a considerable amount of redundant
information is contributing to our infoglut problem.
Either way, a policy of "late reification" (or maybe we
should call it "lazy reification") causes problems for
the usefulness of continuously-amalgamated knowledge.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://xml.coverpages.org/RDF-TopicMaps-LateLazyVersusEarlyPreemptiveReification.html"><P>Does this mean that I'm pro-Topic Maps and anti-RDF?
No, not at all!  These two paradigms have great need
for each other.
</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/DAA7CEC0-71A2-4596-AACA-D60CC5FDC631/blog/" title="blog or email this clip"><img src="http://content8.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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