<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><br><div><div>On 09/06/2011, at 1:01 PM, Kevin Richards wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><span class="Apple-style-span" style="border-collapse: separate; font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div lang="EN-NZ" link="blue" vlink="purple" style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div class="WordSection1" style="page: WordSection1; "><div style="margin-right: 0cm; margin-left: 0cm; font-size: 12pt; font-family: 'Times New Roman', serif; margin-top: 0cm; margin-bottom: 0.0001pt; "><span style="font-size: 11pt; font-family: Calibri, sans-serif; color: rgb(31, 73, 125); ">I don’t think any URNs work with typical semantic web tools do they? Ie they don’t know how to resolve them.<o:p></o:p></span></div></div></div></span></blockquote></div><br><div>A tool does not need to be able to resolve a uri to be able to treat it as an identifier about which it knows facts. We can say</div><div><br></div><div><span class="Apple-tab-span" style="white-space:pre"> </span><<a href="http://example.org/Fred">http://example.org/Fred</a>> <<a href="http://example.org/brother-of">http://example.org/brother-of</a>> <<a href="http://example.org/Sue">http://example.org/Sue</a>></div><div><br></div><div>And let a reasoner deduce that Sue is sibling-of Fred, even with no http server at <a href="http://example.org">example.org</a>. Of course, most tools on seeing a URI that is a HTTP URL will (or can) also take that additional step and pull down data about Fred and Sue - that's what "linked data" is about. But thats an additional step and is not a requirement. Without resolution, the tool knows nothing about the things identified by those ids other than what it is explicitly given. But that's valid.</div><div><br></div><div><br></div><div><br></div><div><br></div><p>If you have received this transmission in error please notify us immediately by return e-mail and delete all copies. If this e-mail or any attachments have been sent to you in error, that error does not constitute waiver of any confidentiality, privilege or copyright in respect of information in the e-mail or attachments.
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