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Re: [ontolog-forum] [ontology-summit] Estimating number of all known fac

 To: "[ontolog-forum]" Adrian Walker Thu, 24 May 2012 14:25:06 -0400
 Hi Leo and All,Just a thought....If we stick strictly to classical logic, as some semanticists advocate, then there is no closed world negation, and therefore there is no way of counting facts (since count=0  simulates closed world negation). Problem solved.  It's impossible to count facts.  (:-)                                   -- AdrianInternet Business Logic (with CWA)A Wiki and SOA Endpoint for Executable Open Vocabulary English Q/A over SQL and RDF Online at www.reengineeringllc.com    Shared use is free, and there are no advertisementsAdrian WalkerReengineeringOn Tue, May 22, 2012 at 6:28 PM, Obrst, Leo J. wrote: I think if you consider the basic fact as either a mono or binary predicate, and then everything else is derived from those, you can gauge.   The total sum of stored data has been estimated (not quite the same notion): http://www.bbc.co.uk/news/technology-12419672, http://hardware.slashdot.org/story/11/02/12/1934244/the-sum-total-of-the-worlds-knowledge-250-exabytes. But apparently that was as of 2007 and just published in Science Express in February, 2011.   See http://www.sciencemag.org/content/332/6025/60.abstract for the original story, once you peel back the blogger crap.   A little knowledge is a dangerous thing.   Thanks, Leo   From: ontology-summit-bounces@xxxxxxxxxxxxxxxx [mailto:ontology-summit-bounces@xxxxxxxxxxxxxxxx] On Behalf Of matthew lange Sent: Tuesday, May 22, 2012 6:06 PM To: lavern@xxxxxxxxxxxx; [ontolog-forum]; [ontolog-summit] Subject: Re: [ontology-summit] Estimating number of all known facts   Billions is several orders of magnitude too small, to be sure--but then again you were talking about beholders, not the facts themselves...wiuch leads me to think that we perhaps could estimate a ballpark average number of facts that a beholder needs to know for various levels of sophistication in particular knowledge domains--including "common sense". In addition to ability--Malcolm Gladwell's, 10,000 hours must be roughly translatable in terms of "knowable entities". Just looking for ballpark here...surely someone has investigated this in terms of knowledge engineering... On Tue, May 22, 2012 at 2:28 PM, LaVern Pritchard wrote: The number of known facts is unknowable because a fact is in the eye of the beholder or a label, there are billions of beholders and labelers, no way to know what they individually know or how they label or to eliminate duplicates. There are estimates I've seen from time to time about the amount of "stuff" in electronically stored form. But facts are slippery things. ___________________________________________________ LaVern A. Pritchard - Pritchard Law Webs Publisher, LawMoose / MooseBoost - www.lawmoose.com Practitioners' Legal Problem Solving Framework Law Practice Intellectual Capital System Semantic Legal Search Assistant 900 Flour Exchange, 310 4th Av S, Mpls, MN 55415 612-332-0102 - lavern@xxxxxxxxxxxx ___________________________________________________ On 5/21/2012 2:59 PM, matthew lange wrote: Hi everyone, I am trying locate published works related to estimates on how quickly our web of knowledge is expanding: that is, estimations on the number of known facts in the universe, how quickly this is growing, knowledge domains with particular growth rates, etc. I would be delighted if someone could point me in the right direction, especially toward peer reviewed resources. Also, my apologies for cross-posting, I do practice good netiquette, but I didn't know which list was more appropriate--happy to receive guidance here as well. Best, ~mc _________________________________________________________________ Msg Archives: http://ontolog.cim3.net/forum/ontology-summit/ Subscribe/Config: http://ontolog.cim3.net/mailman/listinfo/ontology-summit/ Unsubscribe: mailto:ontology-summit-leave@xxxxxxxxxxxxxxxx Community Files: http://ontolog.cim3.net/file/work/OntologySummit2012/ Community Wiki: http://ontolog.cim3.net/cgi-bin/wiki.pl?OntologySummit2012 Community Portal: http://ontolog.cim3.net/wiki/   _________________________________________________________________ Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/ Config Subscr: http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/ Unsubscribe: mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx Shared Files: http://ontolog.cim3.net/file/ Community Wiki: http://ontolog.cim3.net/wiki/ To join: http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid1J   ``` _________________________________________________________________ Message Archives: http://ontolog.cim3.net/forum/ontolog-forum/ Config Subscr: http://ontolog.cim3.net/mailman/listinfo/ontolog-forum/ Unsubscribe: mailto:ontolog-forum-leave@xxxxxxxxxxxxxxxx Shared Files: http://ontolog.cim3.net/file/ Community Wiki: http://ontolog.cim3.net/wiki/ To join: http://ontolog.cim3.net/cgi-bin/wiki.pl?WikiHomePage#nid1J    (01) ```
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