From cl+ at andrew.cmu.edu Fri Aug 22 21:08:37 1997 From: cl+ at andrew.cmu.edu (Christian J Lebiere) Date: Fri, 22 Aug 1997 21:08:37 -0400 (EDT) Subject: Optimizer release Message-ID: The parameter optimizer presented during a special session of the workshop is available with ACT-R 4.0 on the ACT-R web site at: http://act.psy.cmu.edu This is essentially the version that was presented at the workshop, somewhat cleaned up. It is available as a Mac archive, and plain text files for Unix and Windows platforms. It consists of: Optimizer: the code, which should be fully Common Lisp compliant. Load Optimizer: a compiled version for MCL 4.0, ready to load. Note: you should always compile the code. Documentation: a very brief description of how to use it, in MS Word 5.1. 3-Memory Test: an application to a test memory retrieval model. Tower of Hanoi: an application to a simple tower of hanoi model. This implements fairly standard OR techniques. Depending on the model that it is applied to, it may be slow or get stuck in a local minumum. It should however markedly improve your data fit given a decent starting point. Refer to the workshop proceedings for other ways of optimizing model parameters. This code is fairly stable but has seen fairly limited use. Please send me your feedback, suggestions, corrections, bug reports and other desiderata at cl+ at cmu.edu. Christian From cl+ at andrew.cmu.edu Fri Aug 22 21:06:46 1997 From: cl+ at andrew.cmu.edu (Christian J Lebiere) Date: Fri, 22 Aug 1997 21:06:46 -0400 (EDT) Subject: ACT-R 4.0 Beta release Message-ID: <4nzXSam00iV_08JM40@andrew.cmu.edu> A beta version of ACT-R 4.0 is available on the ACT-R web site at: http://act.psy.cmu.edu This is essentially the version that was presented at the summer school and discussed at the workshop, with one or two improvements. It is available as a Mac archive, and plain text files for Unix and Windows platforms. It consists of: ACT-R 4.0b2: the code, which should be fully Common Lisp compliant. Load ACT-R 4.0b2: a compiled version for MCL 4.0, ready to load. Note: you should always compile the code. Examples: a directory of very basic models. Manual: the manual, in MS Word 5.1 format. Changes: a log of the main changes between ACT-R 3.0 and ACT-R 4.0. Note: It only lists the main changes and is NOT exhaustive. Notes (b2): a short description of the changes since the workshop. In general, neither the manual not the changes files is a kind and gentle introduction to ACT-R 4.0. Users who are not already familiar with ACT-R 4.0 through the summer school, the workshop or some other source and who do not need its new features may want to stay away from it until the publication next summer of the book describing it. This is a fairly stable beta version. Please send me your feedback, suggestions, corrections, bug reports and other desiderata at cl+ at cmu.edu. Christian From cl+ at andrew.cmu.edu Fri Aug 29 11:34:33 1997 From: cl+ at andrew.cmu.edu (Christian J Lebiere) Date: Fri, 29 Aug 1997 11:34:33 -0400 (EDT) Subject: ECCM 98 - 1st Announcement Message-ID: [Note: this is an excellent opportunity for ACT-R users in Europe who can't travel to the summer ACT-R workshop in Pittsburgh to present their work. - cl] ------------------------------------------------------------------------- First announcement SECOND EUROPEAN CONFERENCE ON COGNITIVE MODELLING (ECCM-98) Nottingham, England, April 1-4 1998 ------------------------------------------------------------------------- GENERAL INFORMATION: The 2nd European Conference on Cognitive Modelling (ECCM-98) will be held in Nottingham, England, from April 1st to 4th 1998 (starting with a day of optional tutorials). The conference will cover all areas of cognitive modelling, including symbolic and connectionist models, evolutionary computation, artificial neural networks, grammatical inference, reinforcement learning, and data sets designed to test models. Papers that present a running model and its comparison with data are particularly encouraged. This meeting is open for work on cognitive modelling using general architectures (such as Soar and ACT) as well as other kinds of simulation models. These meetings were introduced to establish interdisciplinary co-operation in the domain of cognitive modeling. The first meeting held in Berlin in November 1996 attracted about 60 researchers from Europe and USA working in the fields of artificial intelligence, cognitive psychology, computer linguistics and philosophy of mind. Program: The program will include presentations of papers, demo sessions, invited talks, discussion groups and tutorials on cognitive modeling in the fields of AI programming, classification, problem solving, reasoning, inference, learning, language processing and human-computer-interaction. As Nottingham is an area of 'high touristic value', it will also include a social evening out. Further details are available from: http://www.psychology.nottingham.ac.uk/staff/ritter/eccm98/ PROGRAM CHAIRS Richard Young (U. of Hertfordshire) and Frank Ritter (U. of Nottingham) LOCAL CHAIR: Frank Ritter (U. of Nottingham) IMPORTANT DATES: Submission deadline: 7 January 1998 Decision by: 6 February 1998 Early registration: 9 March 1998 Conference: 1-4 April 1998 A call for papers will be issued soon. ------------------------------------------------------------------- From cl+ at andrew.cmu.edu Fri Aug 29 15:16:35 1997 From: cl+ at andrew.cmu.edu (Christian J Lebiere) Date: Fri, 29 Aug 1997 15:16:35 -0400 (EDT) Subject: 1997 ACT-R Workshop Proceedings Message-ID: <4o1m0Hi00iWS05kxU0@andrew.cmu.edu> Some ACT-R users have expressed an interest in obtaining a copy of the proceedings of the 1997 ACT-R Workshop which took place at Carnegie Mellon from August 2nd to 5th. To minimize printing costs, anyone who did not attend the workshop but would like a copy of the proceedings should send me (cl+ at cmu.edu) email now. The proceedings are informal, with most contributions consisting of the speaker's slides. They are about 200 pages long (~ 8 pages per talk) and spiral-bound. The price to help defray printing and shipping costs is $20. Send a check or money order made payable to CMU at: Christian Lebiere Psychology Department Carnegie Mellon University 5000 Forbes Avenue Pittsburgh PA 15213-3890 Don't forget to specify your mailing address. The workshop schedule is available on the ACT-R web site at http://act.psy.cmu.edu. Christian