> *From: *Ted Goranson <t...@earlresearch.com > <mailto:t...@earlresearch.com>> > *Date: *December 12, 2009 6:12:19 PM PST > *To: *...@listas.unizar.es <mailto:fis@listas.unizar.es> > *Subject: **Re: [Fis] Info Science Comments* > > >> Am I missing something? > > > Jacob -- > > I have been absent for a good while myself from the discussion. In > part that is because I am finishing a visiting stint here in Palo > Alto, working on extending situation theory. We worked with Barwise in > the past and now are working with BOTH Devlin and Leyton; having made > significant progress on a real situational calculus of information flow. > > It will take a couple months at least to consolidate results and > report on them here. The work was in part motivated by talks with > Pedro, Koichiro and Michael Conrad more than a decade ago. > > The reason we have been silent is that so many concepts change when > you use a two-sorted logic and the math is pretty refined. > > A biomedical example is being planned. > > --Ted > > > On Dec 3, 2009, at 8:11 PM, Jacob Lee wrote: > >> Dear All: >> >> I have remained mostly a lurker on this fascinating listserv for some >> time. The diversity of the different participants' backgrounds makes for >> interesting discussions, though I am not sure I always understand >> everything. >> >> That said, having spent the last year or more familiarizing myself with >> situation semantics, situation theory, and infomorphic channel theory >> (i.e. the work of Jon Barwise, Jerry Seligman, David Israel, John >> Perry, Keith Devlin, and many others) for my thesis work, I am struck by >> the general, if not universal, absence of engagement with this work in >> this list's discussions. Situation semantics is an explicitly >> information oriented semantics (rather than say a truth oriented >> semantics), based on partial worlds called situations. Propositional >> sentence meaning is a relation between some discourse situation and a >> described situation. A propositional sentence asserts that a described >> situation support various states of affairs (items of information). >> Jerry Seligman gives a reasonable first pass formalization of the notion >> of a situation in his paper /Physical Situations and Information Flow./ >> Situation theory was further developed in Barwise and Seligman's channel >> theory. Channel theory identifies information flow as arising from >> regularities between the components of distributed systems. The >> decomposition of a system determines what information flows in the >> system; hence the information available to a cognitive agent depends on >> the particular decomposition used. Allwein, Moskowitz, and Chang have >> attempted to integrate Shannon's information theory into Barwise and >> Seligman's channel theory (see refs below). More recent work of >> interest is contained in the recent collection /Philosophy of >> Information/ edited by Pieter Adriaans and Johan Van Benthem. This work >> is relatively well known and seems highly relevant to our discussions on >> this list, so I am puzzled. Am I missing something? >> >> Jacob >> >> REFS >> Adriaans, Pieter, and Johan Van Benthem. Philosophy of Information. >> Elsevier, 2008. >> >> Allwein, Gerard. “A qualitative framework for Shannon information >> theories.” In Proceedings of the 2004 workshop on New security >> paradigms, 23-31. Nova Scotia, Canada: ACM, 2004. >> http://portal.acm.org/citation.cfm?id=1065907.1066030&coll=Portal&dl=GUIDE&CFID=22417089&CFTOKEN=87154842 >> >> <http://portal.acm.org/citation.cfm?id=1065907.1066030&coll=Portal&dl=GUIDE&CFID=22417089&CFTOKEN=87154842> >> >> >> (accessed February 17, 2009). >> >> Moskowitz, I. S., L. W. Chang, and G. T. Allwein. A new framework for >> Shannon information theory. Storming Media, 2004. >> >> Seligman, Jerry "Physical situations and information flow." in Situation >> theory and its applications, vol. 2 1991. >> >> >> Regards, >> >> >> Jacob >> >> >> >> >> >> >> >> _______________________________________________ >> fis mailing list >> fis@listas.unizar.es <mailto:fis@listas.unizar.es> >> https://webmail.unizar.es/cgi-bin/mailman/listinfo/fis > > Ted Goranson > t...@alum.mit.edu ------------------------------------------------------------------------------------------------- _______________________________________________ fis mailing list fis@listas.unizar.es https://webmail.unizar.es/cgi-bin/mailman/listinfo/fis
