koglist August 1998

koglist@maillist.ttk.hu

5 participants
7 discussions

Barsalou on Perceptual Symbol Systems: BBS Call for Commentary

by Stevan Harnad

Below is the abstract of a forthcoming BBS target article on: PERCEPTUAL SYMBOL SYSTEMS by Lawrence W. Barsalou This article has been accepted for publication in Behavioral and Brain Sciences (BBS), an international, interdisciplinary journal providing Open Peer Commentary on important and controversial current research in the biobehavioral and cognitive sciences. Commentators must be BBS Associates or nominated by a BBS Associate. To be considered as a commentator for this article, to suggest other appropriate commentators, or for information about how to become a BBS Associate, please send EMAIL to: bbs(a)cogsci.soton.ac.uk or write to: Behavioral and Brain Sciences Department of Psychology University of Southampton Highfield, Southampton SO17 1BJ UNITED KINGDOM http://www.princeton.edu/~harnad/bbs/ http://www.cogsci.soton.ac.uk/bbs/ ftp://ftp.princeton.edu/pub/harnad/BBS/ ftp://ftp.cogsci.soton.ac.uk/pub/bbs/ gopher://gopher.princeton.edu:70/11/.libraries/.pujournals If you are not a BBS Associate, please send your CV and the name of a BBS Associate (there are currently over 10,000 worldwide) who is familiar with your work. All past BBS authors, referees and commentators are eligible to become BBS Associates. To help us put together a balanced list of commentators, please give some indication of the aspects of the topic on which you would bring your areas of expertise to bear if you were selected as a commentator. An electronic draft of the full text is available for inspection with a WWW browser, anonymous ftp or gopher according to the instructions that follow after the abstract. ____________________________________________________________________ PERCEPTUAL SYMBOL SYSTEMS Lawrence W. Barsalou Department of Psychology Emory University Atlanta, GA 30322 http://userwww.service.emory.edu/~barsalou/ barsalou(a)emory.edu KEYWORDS: analogue processing, categories, concepts, frames, imagery, images, knowledge, perception, representation, sensory-motor representations, simulation, symbol grounding, symbol systems ABSTRACT: Prior to the twentieth century, theories of knowledge were inherently perceptual. Since then, developments in logic, statistics, and programming languages have inspired amodal theories that rest on principles fundamentally different from those underlying perception. In addition, perceptual approaches have become widely viewed as untenable, because they are assumed to implement recording systems, not conceptual systems. A perceptual theory of knowledge is developed here in the contexts of current cognitive science and neuroscience. During perceptual experience, association areas in the brain capture bottom-up patterns of activation in sensory-motor areas. Later, in a top-down manner, association areas partially reactivate sensory-motor areas to implement perceptual symbols. The storage and reactivation of perceptual symbols operates at the level of perceptual components--not at the level of holistic perceptual experiences. Through the use of selective attention, schematic representations of perceptual components are extracted from experience and stored in memory (e.g., individual memories of green, purr, hot). As memories of the same component become organized around a common frame, they implement a simulator that produces limitless simulations of the component (e.g., simulations of purr). Not only do such simulators develop for aspects of sensory experience, they also develop for aspects of proprioception (e.g., lift, run) and for introspection (e.g., compare, memory, happy, hungry). Once established, these simulators implement a basic conceptual system that represents types, supports categorization, and produces categorical inferences. These simulators further support productivity, propositions, and abstract concepts, thereby implementing a fully functional conceptual system. Productivity results from integrating simulators combinatorially and recursively to produce complex simulations. Propositions result from binding simulators to perceived individuals to represent type-token relations. Abstract concepts are grounded in complex simulations of combined physical and introspective events. Thus, a perceptual theory of knowledge can implement a fully functional conceptual system while avoiding what it is becoming increasingly apparent would be problems for amodal symbol systems. Implications for cognition, neuroscience, evolution, development, and artificial intelligence are explored. -------------------------------------------------------------- To help you decide whether you would be an appropriate commentator for this article, an electronic draft is retrievable from the World Wide Web or by anonymous ftp or gopher from the US or UK BBS Archive. Ftp instructions follow below. Please do not prepare a commentary on this draft. Just let us know, after having inspected it, what relevant expertise you feel you would bring to bear on what aspect of the article. The URLs you can use to get to the BBS Archive: http://www.princeton.edu/~harnad/bbs/ http://www.cogsci.soton.ac.uk/bbs/Archive/bbs.barsalou.html ftp://ftp.princeton.edu/pub/harnad/BBS/bbs.barsalou ftp://ftp.cogsci.soton.ac.uk/pub/bbs/Archive/bbs.barsalou gopher://gopher.princeton.edu:70/11/.libraries/.pujournals To retrieve a file by ftp from an Internet site, type either: ftp ftp.princeton.edu or ftp 128.112.128.1 When you are asked for your login, type: anonymous Enter password as queried (your password is your actual userid: yourlogin(a)yourhost.whatever.whatever - be sure to include the "@") cd /pub/harnad/BBS To show the available files, type: ls Next, retrieve the file you want with (for example): get bbs.barsalou When you have the file(s) you want, type: quit

27 years, 8 months

American Scientist E-Publishing Debate: Call for Participation

by Stevan Harnad

AMERICAN SCIENTIST, published by SIGMA XI, the Scientific Research Society invites you to contribute to an On-Line Forum On: Free Internet Access to Traditional Journals Walker, T.J. (1998) American Scientist 86(5) http://www.amsci.org/amsci/articles/98articles/walker.html Moderated by: Stevan Harnad Cognitive Sciences Center Department of Electronics and Computer Science Southampton University Highfield, Southampton SO17 1BJ United Kingdom harnad(a)soton.ac.uk harnad(a)princeton.edu http://www.princeton.edu/~harnad/intpub.html http://cogsci.soton.ac.uk/~harnad/intpub.ht Subscribe to: listserv(a)amsci.org Send message: subscribe september-forum Or link to: http://amsci-forum.amsci.org/archives/september-forum.html After subscribing send messages to: september-forum(a)amsci-forum.amsci.org Best wishes, Stevan ------------------------------------------------------------------------- Moderator's Introduction: (Please don't just read this, but the Walker target article too.) FOR WHOM THE GATE TOLLS? FREEING THE ON-LINE-ONLY REFEREED JOURNAL LITERATURE Stevan Harnad Southampton University It is a foregone conclusion that the refereed journal corpus will all soon be available on-line. The question is: Will access to it have to continue to be blocked by financial firewalls as in the era of paper publication? This is not just a matter of marginal conveniences or utopian details: The difference between free and fee-based access is the difference between a seamless, completely interlinked learned literature at the fingertips of every scholar and scientist in the world and a jerry-rigged agglomeration of toll-ridden proprietary packages -- the on-line counterparts of exactly what we have now in the trade world of scholarly paper journals, funded through Subscriptions, Site-Licenses and Pay-Per-View (tear-sheets, photocopy, interlibrary loan) (S/SL/PPV) tolls, And for the author, the difference is even greater than for the reader, for it is the difference between free versus toll-gated access to one's work, work that one has submitted to the journal for free with the express wish of having it certified and then made public. What will the true cost of certification and publication be once everything is on-line-only? In other words, what will be the cost of quality control for content (refereeing/editing) and form (copy-editing/mark-up) once all expenses associated with paper production are gone? Paper publishers say they will not be much lower (30% at most), but today's brave new on-line-only publishers are finding otherwise (70% at least). If the latter are right, then it will no longer make sense to recover those reduced costs from S/SL/PPV, with its attendant restrictions on access: Author pages charges, funded by University savings from journal subscription cancellations, could cover them up-front, and all authors, readers, and Learned Inquiry itself would be the beneficiaries. Suppose we agree that this outcome would be the best one: How do we get there (page-charge-based free access to all) from here (access restricted by S/SL/PPV)? Thomas Walker (1998) recognises that making the refereed journal literature in all disciplines on-line and free for all, with no financial firewalls, is the optimal and inevitable solution for science and scholarship, and he proposes the following transition scenario: Let journals -- immediately, while we are still in the hybrid paper/on-line era -- finance free access to on-line reprints out of author page-charges (for about the same price as paper reprints currently). The work of authors who pay appears instantly; those who do not pay must wait a year for their work to appear publicly on-line; until then, toll-based paper is the only means of access. This would be responsive to the need and desire of authors for instant free access to their work today, and it would hasten reader addiction to this new mode of access, thereby hastening the day when paper, and its expenses, and the S/SL/PPV tolls that needed to be levied to cover them, can all be jettisoned and author page charges take over entirely, making the entire literature free for all. The only problem with this scenario is that, human nature being what it is, people will not part with their money unless there is no alternative. And there IS an alternative for providing free on-line access to one's work in the paper era: Authors can put their papers on-line themselves -- on their institutional home servers or in centralised ones such as http://xxx.lanl.gov, the NSF/DOE-supported Physics Eprint Archive at Los Alamos National Laboratory. The outcome would be the same as the one sought by Walker: Reader demand for the free on-line versions would rise (xxx has 70,000 hits daily, and new papers are archived at the rate of 100 per weekday), demand for the paper versions would fall, library subscriptions would be cancelled, paper publishers would be forced to restructure as on-line-only publishers, costs would scale down to on-line-only, and THEN (when costs approached those or today's paper reprints) authors would be willing to pay page charges, not for the electronic archiving, which they could do at least as well for themselves, but for the quality control and subsequent certification that journals have always provided. Publishing being the imperishable mark of productivity that it is, Universities will find the resources out of their library windfall savings to cover the relative pittance it will cost to reap the benefits of the optimal and the inevitable. Does that settle it then? Not quite. There are still some controversial issues that have only been glossed over here, and it is hoped that the discussion will focus on these. They are at the heart of the controversy about the future course of refereed journal publishing. (1) What IS the true cost of on-line-only publication of a mainstream journal? (2) What is the current status of copyright agreements in relation to public on-line archiving of one's own work? More important, what justification is there for attempting to restrict such author archiving in domains where authors neither seek nor receive fees or royalties, but only maximal accessibility to their work? (3) How can chaos be avoided in the unstable period of journal cancellations, while S/SL/PPV-supported paper is not yet phased out, costs are not yet down to online-only levels, and author page-charges are not yet phased in? Please read the Walker target article and then post your comments to the list: september-forum(a)amsci-forum.amsci.org or link to: http://amsci-forum.amsci.org/archives/september-forum.html ------------------------------------------------------------------------- Some relevant background links: Ginsparg, P. (1996) Winners and Losers in the Global research Village. Invited contribution, UNESCO Conference HQ, Paris, 19-23 Feb 1996 http://xxx.lanl.gov/blurb/pg96unesco.html Ginsparg, P. (1994) First Steps Towards Electronic Research Communication. Computers in Physics. (August, American Institute of Physics). 8(4): 390-396. http://xxx.lanl.gov/blurb/ Harnad, S. (1990) Scholarly Skywriting and the Prepublication Continuum of Scientific Inquiry. Psychological Science 1: 342 - 343 http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad90.skywriting.html ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad90.skywriting.html Harnad, S. (1991) Post-Gutenberg Galaxy: The Fourth Revolution in the Means of Production of Knowledge. Public-Access Computer Systems Review 2 (1): 39 - 53 http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad91.postgutenberg.… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad91.postgutenberg.html Harnad, S. (1992) Interactive Publication: Extending the American Physical Society's Discipline-Specific Model for Electronic Publishing. Serials Review, Special Issue on Economics Models for Electronic Publishing, pp. 58 - 61. http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad92.interactivpub.… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad92.interactivpub.html Harnad, S. (1995) Electronic Scholarly Publication: Quo Vadis? Serials Review 21(1) 78-80 (Reprinted in Managing Information 2(3) 31-33 1995) http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad95.quo.vadis.html ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad95.quo.vadis.html Harnad, S. (1995) Universal FTP Archives for Esoteric Science and Scholarship: A Subversive Proposal. In: Ann Okerson & James O'Donnell (Eds.) Scholarly Journals at the Crossroads; A Subversive Proposal for Electronic Publishing. Washington, DC., Association of Research Libraries, June 1995. http://cogsci.soton.ac.uk/~harnad/subvert.html ftp://ftp.cogsci.soton.ac.uk/pub/psycoloquy/Subversive.Proposal/ Harnad, S. (1995) Interactive Cognition: Exploring the Potential of Electronic Quote/Commenting. In: B. Gorayska & J.L. Mey (Eds.) Cognitive Technology: In Search of a Humane Interface. Elsevier. Pp. 397-414. http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad95.interactive.co… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad95.interactive.cogniti… Harnad, S. (1996) Implementing Peer Review on the Net: Scientific Quality Control in Scholarly Electronic Journals. In: Peek, R. & Newby, G. (Eds.) Scholarly Publishing: The Electronic Frontier. Cambridge MA: MIT Press. Pp. 103-118. http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad96.peer.review.ht… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad96.peer.review.html Harnad, S. (1997) How to Fast-Forward Serials to the Inevitable and the Optimal for Scholars and Scientists. Serials Librarian 30: 73-81. http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.learned.serial… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad97.learned.serials.html Harnad, S. (1997) The Paper House of Cards (And Why It Is Taking So Long To Collapse). Ariadne 8: 6-7. http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.paper.house.ar… ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad97.paper.house.ariadne… http://www.ariadne.ac.uk/issue8/harnad/ Harnad, S. (1997) Learned Inquiry and the Net: The Role of Peer Review, Peer Commentary and Copyright. Antiquity 71: 1042-1048 http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.antiquity.html ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad97.antiquity.html http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.toronto.html ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad97.toronto.html Harnad, S. (1998) On-Line Journals and Financial Fire-Walls. Nature (in press). URL available 2nd week of September. Harnad, S. & Hemus, M. (1997) All Or None: No Stable Hybrid or Half-Way Solutions for Launching the Learned Periodical Literature into the PostGutenberg Galaxy. In Butterworth, I. (Ed.) The Impact of Electronic Publishing on the Academic Community. London: Portland Press. Pp 18-27. http://tiepac.portlandpress.co.uk/books/online/tiepac/session1/ch5.htm http://www.cogsci.soton.ac.uk/~harnad/Papers/Harnad/harnad97.hybrid.pub.html ftp://ftp.princeton.edu/pub/harnad/Harnad/HTML/harnad97.hybrid.pub.html Hitchcock, S., Carr, L., Harris, S., Hey, J. M. N., and Hall, W. (1997) Citation Linking: Improving Access to Online Journals. Proceedings of the 2nd ACM International Conference on Digital Libraries, edited by Robert B. Allen and Edie Rasmussen (New York, USA: Association for Computing Machinery), pp. 115-122. http://journals.ecs.soton.ac.uk/acmdl97.htm Hitchcock, S., Quek, F., Carr, L., Hall, W., Witbrock, A., and Tarr, I. (1997) Linking Everything to Everything: Journal Publishing Myth or Reality? ICCC/IFIP conference on Electronic Publishing 97: New Models and Opportunities, Canterbury,UK, April. http://journals.ecs.soton.ac.uk/IFIP-ICCC97.html Odlyzko, A.M. (1998) The economics of electronic journals. In: Ekman R. and Quandt, R. (Eds) Technology and Scholarly Communication Univ. Calif. Press, 1998. http://www.research.att.com/~amo/doc/economics.journals.txt Odlyzko, A.M. (1997) The slow evolution of electronic publishing. In Electronic Publishing - New Models and Opportunities, A. J. Meadows and F. Rowland, eds., ICCC Press, 1997. http://www.research.att.com/~amo/doc/slow.evolution.txt Odlyzko, A.M. (1995) Tragic loss or good riddance? The impending demise of traditional scholarly journals, International Journal of Human-Computer Studies (formerly International Journal of Man-Machine Studies), 42 (1995), 71-122. http://www.research.att.com/~amo/doc/tragic.loss.txt Okerson A. & O'Donnell, J. (Eds.) (1995) Scholarly Journals at the Crossroads; A Subversive Proposal for Electronic Publishing. Washington, DC., Association of Research Libraries, June 1995. http://www.arl.org/scomm/subversive/index.html ftp://ftp.cogsci.soton.ac.uk/pub/psycoloquy/Subversive.Proposal/ Transition from Paper Study Group. (1998) Who Should "own" Scientific Papers? Science. Science available URL on Sept. 4 Walker, T.J. (1998) Free Internet Access to Traditional Journals. American Scientist 86(5) http://www.amsci.org/amsci/articles/98articles/walker.html

27 years, 8 months

Saccade Generation: BBS Call for Commentators

by Stevan Harnad

Below is the abstract of a forthcoming BBS target article on: A MODEL OF SACCADE GENERATION BASED ON PARALLEL PROCESSING AND COMPETITIVE INHIBITION by John M Findlay and Robin Walker This article has been accepted for publication in Behavioral and Brain Sciences (BBS), an international, interdisciplinary journal providing Open Peer Commentary on important and controversial current research in the biobehavioral and cognitive sciences. Commentators must be BBS Associates or nominated by a BBS Associate. To be considered as a commentator for this article, to suggest other appropriate commentators, or for information about how to become a BBS Associate, please send EMAIL to: bbs(a)cogsci.soton.ac.uk or write to: Behavioral and Brain Sciences Department of Psychology University of Southampton Highfield, Southampton SO17 1BJ UNITED KINGDOM http://www.princeton.edu/~harnad/bbs/ http://www.cogsci.soton.ac.uk/bbs/ ftp://ftp.princeton.edu/pub/harnad/BBS/ ftp://ftp.cogsci.soton.ac.uk/pub/bbs/ gopher://gopher.princeton.edu:70/11/.libraries/.pujournals If you are not a BBS Associate, please send your CV and the name of a BBS Associate (there are currently over 10,000 worldwide) who is familiar with your work. All past BBS authors, referees and commentators are eligible to become BBS Associates. To help us put together a balanced list of commentators, please give some indication of the aspects of the topic on which you would bring your areas of expertise to bear if you were selected as a commentator. An electronic draft of the full text is available for inspection with a WWW browser, anonymous ftp or gopher according to the instructions that follow after the abstract. ____________________________________________________________________ A MODEL OF SACCADE GENERATION BASED ON PARALLEL PROCESSING AND COMPETITIVE INHIBITION John M Findlay Centre for Vision and Visual Cognition Department of Psychology University of Durham South Road Durham DH1 3LE England j.m.findlay(a)durham.ac.uk http://psynt.dur.ac.uk/staff/jmf/jmf.htm Robin Walker Department of Psychology Royal Holloway University of London Egham, Surrey TW20 0EX England robin.walker(a)rhbnc.ac.uk KEYWORDS: saccade, fixation, visual attention, salience, latency, model, competitive interaction, reciprocal inhibition, spatial selection, search selection. ABSTRACT: During active vision, the eyes continually scan the visual environment using saccadic scanning movements. This article presents a model for the human saccadic system. The model is described in terms of information processing and control with some close parallels to established physiological processes in the oculomotor system. The structure of the model consists of two separate pathways concerned respectively with the spatial and the temporal programming of the movement. A key aspect of the second pathway is the involvement of spatially distributed coding and the selection of the saccade target from a salience map. The two pathways descend through a hierarchy of levels, the lower levels operating automatically. An important feature is that visual onsets have automatic access to the eye control system via the lower levels. At various levels, centres in each pathway are interconnected via reciprocal inhibition. The model is used to account for a number of well-established phenomena observed in the study of target elicited saccades, notably: the gap effect, express saccades, the remote distractor effect and the global effect. High-level control of the pathways is discussed in relation to tasks such as visual search and reading. It is suggested that high level control operates through the two processes of spatial selection and search selection, which will generally combine in an automated way. Finally, some data from patients with unilateral neglect are examined in connection with the model. -------------------------------------------------------------- To help you decide whether you would be an appropriate commentator for this article, an electronic draft is retrievable from the World Wide Web or by anonymous ftp or gopher from the US or UK BBS Archive. Ftp instructions follow below. Please do not prepare a commentary on this draft. Just let us know, after having inspected it, what relevant expertise you feel you would bring to bear on what aspect of the article. The URLs you can use to get to the BBS Archive: http://www.princeton.edu/~harnad/bbs/ http://www.cogsci.soton.ac.uk/bbs/Archive/bbs.findlay.html ftp://ftp.princeton.edu/pub/harnad/BBS/bbs.findlay ftp://ftp.cogsci.soton.ac.uk/pub/bbs/Archive/bbs.findlay gopher://gopher.princeton.edu:70/11/.libraries/.pujournals To retrieve a file by ftp from an Internet site, type either: ftp ftp.princeton.edu or ftp 128.112.128.1 When you are asked for your login, type: anonymous Enter password as queried (your password is your actual userid: yourlogin(a)yourhost.whatever.whatever - be sure to include the "@") cd /pub/harnad/BBS To show the available files, type: ls Next, retrieve the file you want with (for example): get bbs.findlay When you have the file(s) you want, type: quit

27 years, 8 months

Connectionist symbol processing: any progress? (fwd)

by Gerfgely Csibra

Rejected message: sent to koglist(a)cogpsyphy.hu by ERDI(a)SUNSERV.KFKI.HU follows. Reason for rejection: sender not subscribed. ------------------------------------------------------------------------------- ---------- Forwarded message ---------- Date: Tue, 11 Aug 1998 03:34:27 -0400 From: Dave_Touretzky(a)cs.cmu.edu To: connectionists(a)cs.cmu.edu Subject: Connectionist symbol processing: any progress? I'd like to start a debate on the current state of connectionist symbol processing? Is it dead? Or does progress continue? A few years ago I contributed a short article on "Connectionist and symbolic representations" to Michael Arbib's Handbook of Brain Theory and Neural Networks (MIT Press, 1995). In that article I explained concepts such as coarse coding, distributed representations, and RAAMs, and how people had managed to do elementary kinds of symbol processing tasks in this framework. The problem, though, was that we did not have good techniques for dealing with structured information in distributed form, or for doing tasks that require variable binding. While it is possible to do these things with a connectionist network, the result is a complex kludge that, at best, sort of works for small problems, but offers no distinct advantages over a purely symbolic implementation. The cases where people had shown interesting generalization behavior in connectionist nets involved simple vector-based representations, without nested structures or variable binding. People had gotten some interesting effects with localist networks, by doing spreading activation and a simple form of constraint satisfaction. A good example is the spreading activation models of word disambiguation developed in the 1980s by Jordan Pollack and Dave Walts, and by Gary Cottrell. But the heuristic reasoning enabled by spreading activation models is extremely limited. This approach does not create new structure on the fly, or deal with structured representations or variable binding. Those localist networks that did attempt to implement variable binding did so in a discrete, symbolic way that did not advance the parallel constraint satisfaction/heuristic reasoning agenda of earlier spreading activation research. So I concluded that connectionist symbol processing had reached a plateau, and further progress would have to await some revolutionary new insight about representations. The last really significant work in the area was, in my opinion, Tony Plate's holographic reduced representations, which offered a glimpse of how structured information might be plausibly manipulated in distributed form. (Tony received an IJCAI-91 best paper award for this work. For some reason, the journal version did not appear until 1995.) But further incremental progress did not seem possible. People still do cognitive modeling using connectionist networks. And there is some good work out there. One of my favorite examples is David Plaut's use of attractor neural networks to model deep and surface dyslexia -- an area pioneered by Geoff Hinton and Tim Shallice. But like most connectionist cognitive models, it relies on a simple feature vector representation. The problems of structured representations and variable binding have remained unsolved. No one is trying to build distributed connectionist reasoning systems any more, like the connectionist production system I built with Geoff Hinton, or Mark Derthick's microKLONE. Today, Michael Arbib is working on the second edition of his handbook, and I've been asked to update my article on connectionist symbol processing. Is it time to write an obituary for a research path that expired because the problems were too hard for the tools available? Or are there important new developments to report? I'd love to hear some good news. -- Dave Touretzky References: Arbib, M. A. (ed) (1995) Handbook of Brain Theory and Neural Networks. Cambridge, MA: MIT Press. Plaut, D. C., McClelland, J. L., Seidenberg, M. S., and Patterson, K. (1996) Understandig normal and impaired word reading: computational principles in quasi-regular domains. Psychological Review, 103(1):56-115. Plate, T. A. (1995) Holographic reduced representations. IEEE Transactions on Neural Networks, 6(3):623. Touretzky, D. S. and Hinton, G. E. (1988) A distributed connectionist production system. Cognitive Science, vol. 12, number 3, pp. 423-466. Touretzky, D. S. (1995) Connectionist and symbolic representations. In M. A. Arbib (ed.), Handbook of Brain Theory and Neural Networks, pp. 243-247. MIT Press.

27 years, 8 months

Otodik Magyar Latas Szimp. Vegleges Program

by Jozsef Fiser

OTODIK MAGYAR LATAS SZIMPOZIUM 1998 augusztus 29 MTA Pszichologiai Intezetenek eloadoterme PROGRAM 8:50 MEGNYITO NEM FOEMLOS TANULMANYOK I 9:00 A KEREG ES A TALAMUSZ OSSZEKOTTETESEINEK KERESZTEZETT MODALITAST EREDMENYEZO ATRENDEZODESE UJSZULOTT ENUKLEACIOT KOVETOEN PATKANYBAN Negyessy Laszlo MTA-SOTE EKSz, Neurobiologiai Kutatocsoport 9:20 KAPCSOLATOK A TELENCEPHALON VIZUALIS KOZPONTJAI KOZOTT Alpar SOTE Anatomia 1 9:40 A LATOPALYA VEGZODESEI A KULONBOZO KOZPONTOKBAN Sebestyen SOTE Anatomia 1 10:00 SZUNET NEM FOEMLOS TANULMANYOK II 10:20 Modulalo palyak a latorendszerben Tombol Terez SOTE Anatomia 1 10:40 PEPTIDERG RENDSZEREK A MACSKA VIZUOMOTOROS KOZPONTJAIBAN Borostyankoi Zsolt MTA-SOTE EKSz, Neurobiologiai Kutatocsoport 11:00 SZUNET FOEMLOS INFEROTEMPORALIS KEREG (IT) 11:20 Eber majom IT neuralis aktivitasanak variabilitasa es ingerdiszkriminacios kapacitasa Kovacs Gyula Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Elettani Intezet 11:40 IT NEURONOK SZELEKTIVITAS-VIZSGALATA TELJES ES RESZLEGESEN TOROLT VONALAS RAJZOKKAL RHESUS MAJMOKBAN Sary Gyula Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Elettani Intezet 12:00 SZUNET-EBED KODOLASI MECHANIZMUSOK 2:00 HOGYAN ALAKIT KI AZ AGY MERET INVARIANS REPREZENTACIOKAT ALAKFELISMERES CELJARA? Fiser Jozsef University of Rochester 2:20 A SZKOTOPIAS LATAS ES A MAGNOCELLULARIS LATOPALYA Benedek Gyorgy Szent-Gyorgyi Albert Orvostudomanyi Egyetem, Elettani Intezet 2:40 Receptiv mezo dinamikak modellezese es zaj szures a latorendszerben Orzo Laszlo SOTE Anatomia 1 3:00 SZUNET HUMAN KISERLETEK 3:20 Binokularis rivalizalas Kovacs Ilona Rutgers University 3:40 SPATIOTEMPORALIS VIZUALIS FUNKCIOK VIZSGALATA SCHIZOPRENIABAN Antal Andrea Szent-Gyorgyi Albert Orvostudomanyi Egyetem 4:00 ESOTROPIA ELLENES KESOI MUTETEK HATASA A LATOKERGI KIVALTOTT VALASZOKRA Kozma Petra Szent-Gyorgyi Albert Orvostudomanyi Egyetem 4:20 SZIMPOZIUM ZARAS

27 years, 8 months

Re: magyar ongresszu program

by Bocz Andras

Szia Csaba Megtalaltam a WEB oldal cimet: http://sophia,jpte.hu/btk/tanszekek/nyelvtud/. Remelem, segit.Most meg benne vagyok, ide kopizom a programot. Ha szebben akarod olvasni, menj el a page-re. Udv, Andras *************************************************** August 26, Wednesday: 9.00 Opening 9.10-12.15 Syntax and Semantics (chair: Casper de Groot) 9.10 Katalin É. Kiss (i.s.): The Hungarian Noun Phrase is like the English Noun Phrase 10.00 Gábor Alberti and Anna Medve: Constituents in Special Operator Positions 10.45 Csaba Olsvay: On the syntax of negation and quantification in Hungarian 11.30 David Tugwell: Dynamic syntax, binding and the flames of Warsaw 12.15-14.00 break 14.00-18.05 Syntax and Morphology (chair: Katalin É. Kiss) 14.00 István Kenesei (i.s.): Auxiliaries in Hungarian (?) 14.50 Huba Bartos: Affix order and the Mirror Principle 15.35 Anikó Lipták: Multiple relativization in Hungarian 16.20 coffee 16.30 Casper de Groot: Parts of speech in Hungarian 17.15 invited speaker: ? August 27, Thursday: 9.00-18.00 Semantics (chairs: József Andor (9.00-12.20), István Kenesei (14.30-18.00)) 9.00 László Hunyadi: On the interaction of LF and PF in the grammar of Hungarian 9.45 Péter Ábel: Two types of negative polarity in Hungarian 10.30 Beáta Gyuris: On the semantic interpretation of Hungarian temporal and conditional subordinate clauses 11.15 coffee 11.35 Ildikó Tóth: -Va and -ván participles from diachronic and synchronic perspectives 12.20 László Kálmán and Viktor Tron: Classifier Constructions in Hungarian 13.05-14.30 break 14.30 Christopher Pinon: Végig `from beginning to end' 15.15 József Andor and Tamás Pólya: A frame-based, lexicalist approach to describing functions of the verbal prefix le 16.00 Balázs Surányi and Anikó Csirmaz: Ott `there' in Hungarian: a case of an expletive? 16.45 coffee 17.00-18.00 brief presentations: Gréte Dalmi: Psych-predicates and Relativized Modality Edit Jakab: 'Must' in Hungarian, Serbian and Croatian (?) Judit Uzonyi Kiss and Márta Tuba: On adverbial participle predicates August 28, Friday: 9.00-12.40 Syntax and language acquisition/processing (chair: Nancy A. Ritter) 9.00 Csaba Pléh (i.s.): ? 9.50 Janina Radó: Topic and focus in Hungarian sentence comprehension 10.35 coffee 10.50 Szilvia Papp: Evidence of optionality in native Hungarian and English-Hungarian interlanguage 11.35 Zoltán Bánréti: Directionality of VP ellipsis in sentence processing 12.20-12.40 a brief presentation: Anna Babarczy: Syntax and semantics in learning and mislearning verb argument structures 12.40-14.20 break 14.20-16.35 Phonology (chair: Zoltán Bánréti) 14.20 Nancy A. Ritter: Hungarian voicing assimilation revisited in HDP 15.05 Péter Rebrus and Miklós Törkenczy: Phonotactics and the morphophonology of the Hungarian verb 15.50 Catherine O. Ringen and Szilárd Szentgyörgyi: Constraint reranking in the Szeged dialect of Hungarian 16.35 coffee 16.50-18.10 brief presentations: Gyula Zsigri: Predictable vowel properties: the phonology-phonetics interface Mária Ladányi: Productivity, creativity and analogy in word formation: derivational innovations in Hungarian poetic language Genovéva Puskás: Verb focussing Kriszta Szendrõi: The interaction of long operator movement and the subjunctive in Hungarian John Payne and Erika Chisarik: Demonstrative Constructions in Hungarian 19.30 Dinner ************************************* András Bocz Department of English Janus Pannonius University Ifjúság u. 6. H-7624 Pécs, Hungary Tel/Fax: (36) (72) 314714

27 years, 9 months

Visegrad: DYNAMICS OF HIPPOCAMUS (and other CORTICAL STRUCTURES)

by Erdi Peter

Az MTA KFKI RMKI Biofizikai Osztalya es a Magyar Kognitiv Tudomanyi Alapitvany Workshopot szervez a visegradi ELTE uduloben, augusztus 24 (del) es augutszus 27 (del) kozott. *********************************************************** DYNAMICS OF HIPPOCAMUS (and other CORTICAL STRUCTURES) ************************************************************ A workshopon elozetesen bejelentkzett (!!) vendegeket szivesen latunk. Korlatozott szamban lehetoseg van szallasra es etkezesre. Jelenmezes a kovetkezo nehany napban, augusztus 14 pentek 13.00 oraig. Szallas + ellatas: 3360 Ft (nem ELTE hallgato-oktato), es 1850 Ft elteseknek. Ebed: 630 Ft illetve 390 Ft, vacsora 490 Ft es 304 Ft). Csak szallas: haaat, ezt most nem tudom, talan nem lehet. Aki ugy gondolja, hogy befizet reszveteli dijkent 1000 Ft-ot, azt elfogadjuk, szamlat (es koszonetet) adunk. Erdi Peter **************************************************************** DYNAMICS OF HIPPOCAMUS (and other CORTICAL STRUCTURES) Visegrad, August 24-27 Dept. Biophysics of the KFKI Reserach Institute for Particle and Nuclear Physics of the Hungarian Academy of Sciences and the Hungarian Cognitive Science Foundation ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ Eotvos University Resort House. Visegrad, Fo utca 117 Tel: +(36 26) 398 165 from Hungary dial: 06 26 398 165 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++= There are lectures and working sessions in the workshop. The intention of the working sessions to have discussions about the scope and limits of models in the light of the experimental background and develop new model frameworks, if it appears to be necessary. Six speicific topics will be discussed, and the discussion leaders assigned are requested to make some preparations to lead the work of the session. Preliminary Program August 24, Monday Travelling to Visegrad (by bus: the boat tour we planned seems to be too long. Further info will come next week) 13.00 Lunch 14.30 - 16.00 Gulyas, Attila: The functional anatomy of the hippocampus (Tutorial) 16.05 - 17.05 Czeh, Gabor: On the electrophysiology of hippocampal cells 17.10 - 18.10 Lengyel, Mate: An investigation of location-dependent differences between somatic and dendritic IPSPs Dinner 20.00-21.30 Working Session 1 [Single cell models, synaptic integration, neurochemical characterization: how to incorporate them into the models?] Discussion leaders: Erdi, Marsalek August 25, Tuesday 9.00 - 10.00 Gulyas, Attila: Total number of excitatory and inhibitory synaptic inputs onto hippocampal CA1 area neurons. 10.05 - 11. 05 Liljenstrom, Hans: A computational approach to fluctuations and oscillations in hippocampus 11.10 - 12.10 Tsuda, Ichiro: The possible roles of chaotic itinerancy and singular-continuous nowhere-differentiable attractors in hippocampus Lunch 15.00 - 16.00 Olypher, Andrey: Gamma oscillations by synaptic inhibition in a homogeneous medium model of hippocampal interneurons 16.05 - 17.05 Adorjan, Peter: Contrast adaptation and infomax in visual cortical neurons 17.30 - 18.30 Working Session 2 [Models of LTP genereation: from detailed neurochemistry to phenomenological description] Discussion leader: Czech Dinner 20.00 - 21.30 Working session 3 [Rhythm generation and propagation in the hippocampus] Discussion leaders: Borisyuk, Szalisznyo August 26 Wendesday 9.00 - 10.00 Lorincz, Andras and Buzsaki, Gyuri: A two-stage computational model training long-term memories in the entorhinal-hippocampal region 10.05 - 11.05 Marsalek, Petr and Fenton, Andre: On the excess variance of firing in place cells 11.10 - 12.10 Fenton, Andre: Physiological clues to the hippocampal processing of space Lunch 15.00 - 16.00 Szatmary, Zoltan: Using temporal associations to model development of place fields in a new environment 16.10 - 17.40 Working Session 4 [Place cell formation and navigation] Discussion leaders: Fenton, Olypher Dinner 20.00 - 21.30 Working session 5 [Hippocampal-dependent learning and memory phenomena] Discussion leaders: Lorincz, Szatmary, Tsuda August 27 9.00 - 10.00 Szalisznyo, Kriszta; Somogyvari, Zoltan and Payrits, Szabolcs: Population modeling: Signal propagation in the CA3 region 10.05- 12.15 Working Session 6 [Population model: what can we expect?] Discussion leaders: Adorjan, Somogyvari, Payrits Lunch

27 years, 9 months

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koglist August 1998