Newsgroups: comp.archives Path: utzoo!utgpu!news-server.csri.toronto.edu!ox.com!emv From: neuron-request@HPLMS2.HPL.HP.COM ("Neuron-Digest Moderator Peter Marvit") Subject: [neural-nets] Neuron Digest V7 #5 Message-ID: <1991Jan31.084921.12474@ox.com> Followup-To: comp.ai.neural-nets Sender: emv@ox.com (Edward Vielmetti) Reply-To: "Neuron-Request" Organization: Hewlett-Packard Laboratories References: <15993.664854083@hplpm.hpl.hp.com> Date: Thu, 31 Jan 1991 08:49:21 GMT Approved: emv@ox.com (Edward Vielmetti) X-Original-Newsgroups: comp.ai.neural-nets Archive-name: ai/neural-nets/backprop/1991-01-26 Original-posting-by: neuron-request@HPLMS2.HPL.HP.COM ("Neuron-Digest Moderator Peter Marvit") Original-subject: Neuron Digest V7 #5 Reposted-by: emv@ox.com (Edward Vielmetti) Neuron Digest Friday, 25 Jan 1991 Volume 7 : Issue 5 Today's Topics: ... Backprop s/w [Other topics deleted. --Ed] Send submissions, questions, address maintenance and requests for old issues to "neuron-request@hplabs.hp.com" or "{any backbone,uunet}!hplabs!neuron-request" Use "ftp" to get old issues from hplpm.hpl.hp.com (15.255.176.205). ------------------------------ From: Shawn Lockery Date: Mon, 14 Jan 91 14:59:54 -0800 Subject: Backprop s/w Several months ago I asked about canned backprop simulators. At long last, here is the result of my query: =======================================- Barak Pearlmutter has written a dynamical backprop simulator. A version of his program that solves a toy problem and that is readily modifiable is available by anonymous ftp from helmholtz.sdsc.edu. The directory is pub/ and the filename is pearlmutter.tar =======================================- Yoshiro Miyata (miyata@dendrite.colorado.edu) has written an excellent public domain connectionist simulator with a nice X windows or Sun View interface. It is called SunNet. He provides a pretty easy to learn "general" definition language so a user can experiment with quite varied back-prop and non-conventional architectures. Examples are provided of backpropagation, boltzmann learning, and others. Source code is available by anonymous ftp from boulder. Look for SunNet5.5.tar.Z at boulder.colorado.edu. =======================================- Yan Le Cun (Department of Computer Science, University of Toronto, Toronto, Ontario, M5S 1A4, Canado) has written a commercial simulator called SN /2 that is powerful and well documented. ======================================= The Rochester Connectionist Simulator (RCS) is obtainable by anonymous ftp from cs.rochester.edu. You will find the code in the directory pub/simulator. ======================================== The speech group at Oregon Graduate Institute has written a conjugate-gradient optimization program called OPT to train fully connected feed-forward networks. It is available by anonymous ftp from cse.ogi.edu. The code is in the directory pub/speech. Copy the file opt.tar. You will need to use the unix "tar" command to process the file once you have it on your computer. ========================================- For the Macintosh, there is the commercial program called MacBrain (Neuronics, Inc., ! Kendall Square #2200, Cambridge, MA 02139). It has the usual Macintosh bells and whitsles and costs $400. ========================================- For the Macintosh, there is a public domain program called Mactivation. Mactivation version 3.3 is available via anonymous ftp on alumni.Colorado.EDU (internet address 128.138.240.32) The file is in /pub and is called mactivation.3.3.sit.hqx Mactivation is an introductory neural network simulator which runs on all Apple Macintosh computers. A graphical interface provides direct access to units, connections, and patterns. Basic concepts of network operations can be explored, with many low level parameters available for modification. Back-propagation is not supported (coming in 4.0) A user's manual containing an introduction to connectionist networks and program documentation is included. The ftp version includes a plain text file and an MS Word version with nice graphics and footnotes. The program may be freely copied, including for classroom distribution. for version 4.0. You can also get a copy by mail. Send $5 to Mike Kranzdorf, Box 1379, Nederland, C0 80466-1379. ========================================- For 386 based PC's, you may purchase ExploreNet from HNC, 5501 Oberlin Drive, San Diego, CA 92121. You don't get source code for your $750, but it's powerful and flexible. ========================================- For IBM PC's, there is a disk that comes along with the third volume of the PDP books (Parallel Distributed Processing, Rumelhart, McClelland and the PDP Research Group, MIT Press, 1986 . You get lots of source code, and the third volume itself is a nice manual. ------------------------------ End of Neuron Digest [Volume 7 Issue 5] ***************************************