From reinforce@cs.uwa.oz.au Fri Nov 1 04:01:57 1996 Received: from lucy.cs.wisc.edu (lucy.cs.wisc.edu [128.105.2.11]) by sea.cs.wisc.edu (8.6.12/8.6.12) with ESMTP id EAA20035 for ; Fri, 1 Nov 1996 04:01:53 -0600 Received: from cs.uwa.oz.au (bilby.cs.uwa.oz.au [130.95.1.11]) by lucy.cs.wisc.edu (8.6.12/8.6.12) with ESMTP id EAA18855 for ; Fri, 1 Nov 1996 04:01:48 -0600 Received: from (parma.cs.uwa.oz.au [130.95.1.7]) by cs.uwa.oz.au (8.6.8/8.5) with SMTP id QAA10449; Fri, 1 Nov 1996 16:04:30 +0800 Date: Fri, 1 Nov 1996 16:04:30 +0800 From: reinforce@cs.uwa.oz.au Message-Id: <199611010804.QAA10449@cs.uwa.oz.au> Apparently-To: reinforce-subs@cs.uwa.edu.au Apparently-To: reinforce@cs.uwa.edu.au m "Roberto Piola" at Oct 29, 96 11:31:13 am X-Mailer: ELM [version 2.4 PL25] Content-Type: text Content-Length: 1495 Status: RO From: brutzman@cs.nps.navy.mil (Don Brutzman) To: piola@di.unito.it (Roberto Piola) Cc: reinforce@cs.uwa.edu.au, ga-list@aic.nrl.navy.mil, hybrid-list@cs.ua.edu, alife@cognet.ucla.edu, EP-LIST@magenta.me.FAU.EDU, agents@sun.com, machine-learning@eecs.wsu.edu Subject: Re: graphics for RL Date: Thu, 31 Oct 1996 08:23:26 -0800 (PST) I use a SGI-based cross-platform library: OpenInventor. It is excellent. For software details and source code see http://www.stl.nps.navy.mil/~auv However I recommend you get a Virtual Reality Modeling Language (VRML) authoring tool. This will permit your results to be visible from any web browser. More info on VRML at http://www.sdsc.edu/vrml Roberto Piola writes: > > We are currently working on extending to a Virtual Reality scenario > our previous work on Reinforcement Learning; in doing so, we would > need a good 3D graphics library for C or C++ languages. > > We tried, with unsatisfactory results, the following ones: > * Portable Dore' 6.01: it simply does not compile under our SunOS installation > * Microcosm: it is too slow for doing real-time animations > * X3d 2.2: it produces only wire-frame views, and without hidden-line removal > * tagl 2.1: perhaps the best one, it lacks only the possibility of changing the > point of view of the observer > > If anyone is currently using a graphic library for representing agents > moving in a simulated 3D world, a reference would be greatly appreciated. > > Thanks in advance > Roberto Piola > Dept. of Computer Science > University of Torino (IT) > > all the best, Don -- Don Brutzman Naval Postgraduate School, Code UW/Br Root 200 work 408.656.2149 Monterey California 93943-5000 USA fax 408.656.3679 Virtual worlds/underwater robots/Internet http://www.stl.nps.navy.mil/~brutzman From bruno@redwood.ucdavis.edu Sat Nov 2 13:12:54 1996 Received: from lucy.cs.wisc.edu (lucy.cs.wisc.edu [128.105.2.11]) by sea.cs.wisc.edu (8.6.12/8.6.12) with ESMTP id NAA15046 for ; Sat, 2 Nov 1996 13:12:45 -0600 Received: from TELNET-1.SRV.CS.CMU.EDU (TELNET-1.SRV.CS.CMU.EDU [128.2.254.108]) by lucy.cs.wisc.edu (8.6.12/8.6.12) with SMTP id NAA19153 for ; Sat, 2 Nov 1996 13:12:43 -0600 Received: from TELNET-1.SRV.CS.CMU.EDU by telnet-1.srv.cs.CMU.EDU id aa11481; 2 Nov 96 12:40:48 EST Received: from DST.BOLTZ.CS.CMU.EDU by TELNET-1.SRV.CS.CMU.EDU id aa11479; 2 Nov 96 12:30:25 EST Received: from DST.BOLTZ.CS.CMU.EDU by DST.BOLTZ.CS.CMU.EDU id aa26196; 2 Nov 96 12:29:56 EST Received: from EDRC.CMU.EDU by B.GP.CS.CMU.EDU id aa20000; 1 Nov 96 22:53:04 EST Received: from redwood.ucdavis.edu by EDRC.CMU.EDU id aa26264; 1 Nov 96 22:52:15 EST Received: by redwood.ucdavis.edu (940816.SGI.8.6.9/940406.SGI.AUTO) id TAA09325; Fri, 1 Nov 1996 19:52:40 -0800 Date: Fri, 1 Nov 1996 19:52:40 -0800 From: "Bruno A. Olshausen" Message-Id: <199611020352.TAA09325@redwood.ucdavis.edu> To: connectionists@cs.cmu.edu Subject: NIPS96 workshop on natural images NIPS96 workshop announcement: ----------------------------- The structure of natural images and efficient image coding Organized by Dan Ruderman and Bruno Olshausen This one-day workshop will cover recent work on natural image statistics and their relation to visual system design. The discovery of scaling in natural images (Burton and Moorhead 1987, Field 1987, Tolhurst et al 1992, Ruderman and Bialek 1994, Dong and Atick 1995, van der Schaaf and van Hateren 1996) has led to much interest in their statistical structure as well as the constraints these statistics place on efficient coding in the visual system. The work of Atick and Redlich (1990) in particular has demonstrated how the statistics of images may be combined with the efficiency principles of Attneave and Barlow to make quantitative predictions about the properties of ganglion cell receptive fields. Many researchers since have followed suit with other optimization strategies, such as sparse coding (Olshausen and Field 1996, Fyfe and Baddeley 1995) and information maximization (Bell and Sejnowski 1996), in an attempt to relate the response properties of cortical cells to the statistics of natural images in terms of efficient coding. This forum will offer the first open informal discussion of this rapidly-evolving approach toward understanding the visual system. Participants: Roland Baddeley, Oxford University Tony Bell, Salk Institute Dawei Dong, Caltech David Field, Cornell University Jack Gallant, U.C. Berkeley Hans van Hateren, University of Groningen David Mumford, Harvard University Penio Penev, Rockefeller University Pam Reinagel, Caltech Harel Shouval, Brown University Michael Webster, University of Nevada, Reno Tony Zador, Salk Institute See the web site, http://redwood.ucdavis.edu/NIPS96/abstracts.html, for abstracts and further information. From fdoyle@ecn.purdue.edu Sat Nov 2 16:03:29 1996 Received: from lucy.cs.wisc.edu (lucy.cs.wisc.edu [128.105.2.11]) by sea.cs.wisc.edu (8.6.12/8.6.12) with ESMTP id QAA16623 for ; Sat, 2 Nov 1996 16:03:24 -0600 Received: from TELNET-1.SRV.CS.CMU.EDU (TELNET-1.SRV.CS.CMU.EDU [128.2.254.108]) by lucy.cs.wisc.edu (8.6.12/8.6.12) with SMTP id QAA20579 for ; Sat, 2 Nov 1996 16:03:22 -0600 Received: from TELNET-1.SRV.CS.CMU.EDU by telnet-1.srv.cs.CMU.EDU id aa11495; 2 Nov 96 12:48:43 EST Received: from DST.BOLTZ.CS.CMU.EDU by TELNET-1.SRV.CS.CMU.EDU id aa11483; 2 Nov 96 12:31:15 EST Received: from DST.BOLTZ.CS.CMU.EDU by DST.BOLTZ.CS.CMU.EDU id aa26202; 2 Nov 96 12:30:55 EST Received: from RI.CMU.EDU by B.GP.CS.CMU.EDU id aa26019; 2 Nov 96 7:41:56 EST Received: from volterra.ecn.purdue.edu by RI.CMU.EDU id aa19716; 2 Nov 96 7:41:35 EST Received: from volterra.ecn.purdue.edu (fdoyle@localhost) by volterra.ecn.purdue.edu (8.7.6/3.8.2moyman) for delivery to "Connectionists@CS.CMU.EDU" id HAA19362; Sat, 2 Nov 1996 07:41:31 -0500 (EST) Message-Id: <199611021241.HAA19362@volterra.ecn.purdue.edu> Date: Sat, 2 Nov 1996 07:41:31 -0500 (EST) From: Frank Doyle To: Connectionists@cs.cmu.edu Subject: Postdoctoral Position X-Sun-Charset: US-ASCII POSTDOCTORAL POSITION (Biosystems Analysis and Control) School of Chemical Engineering, Purdue University This position is part of an ONR and NSF-funded project to study the baroreflex for possible applications to process control systems. In addition, the project involves strong collaborations with the DuPont company, and extended interactions with the DuPont group are an intended part of this project. The project involves experimental and computational studies aimed at understanding local modulation of cardiac behavior for applications to locally intelligent control systems design. Specific sub-projects include: (i) second messenger modeling of the mechanisms responsible for modulation in a ganglion cell; (ii) computational modeling of the local and central reflex interactions; (iii) abstraction of control principles from the reflex model for chemical process control applications; and (iv) [possibly] experimental studies to validate the local model. The ideal applicant will be able to contribute to the cellular modeling from both a computational and (possibly) an experimental perspective. Familiarity with control systems engineering is also desirable. More information about the laboratory can be found at the URL http://volterra.ecn.purdue.edu/~fdoyle/neuro.html The position is available immediately and will last a minimum period of one year, with the possibility to be extended for another year. The applicants should have a PhD in a relevant discipline and a solid experience in biochemical engineering and control systems. This work will also involve some amount of cellular neurophysiology. While a strong background on experimental neurophysiology is not a requisite, the candidate should be willing to become acquainted with these techniques. Purdue University offers competitive salary and benefits. Applicants should send a CV, a statement of their professional interests (not longer than 1 page) and the names, addresses and telephone numbers of at least two reference to Frank Doyle either via email (fdoyle@ecn.purdue.edu) or via surface mail at the following address: Frank Doyle School of Chemical Engineering Purdue University West Lafayette IN 47907-1283 Purdue University is an equal opportunity, affirmative action educator and employer.