From db30 at andrew.cmu.edu Sun Dec 1 01:17:46 2002 From: db30 at andrew.cmu.edu (Dan Bothell) Date: Sun, 01 Dec 2002 01:17:46 -0500 Subject: [ACT-R-users] puzzled by act-r 5.0.6 behavior In-Reply-To: Message-ID: <3618348309.1038705466@[192.168.123.126]> --On Saturday, November 30, 2002 1:36 PM -0500 Bruno Emond wrote: > Dan, > > Thanks for the explanation. I guess this is a good example of > parallel processing between modules. > > Now is there a way to force act-r to wait for the retrieval to be > finished or do I need to add a third production (see below)? > > (p ret1 > ??? =goal> > ??? isa goal > status retrieve > ??? ==> > ??? +retrieval> > ??? isa c > =goal> > status retrieving > ??? ) > (p ret2 > ??? =goal> > ??? isa goal > status retrieving > =retrieval> > ??? isa c > ??? ==> > ??? -goal> > ??? ) > (p ret3 > ??? =goal> > ??? isa goal > status retrieving > ??? ==> > ??? !output! "Just waiting for my memory to catch up" > ??? ) > > If none of the productions can fire, then nothing will happen until something changes the state (like a retrival completing) and then another attempt will be made to fire a production. Thus, it's not necessary to have a null or spinning production most of the time (there are some circumstances where it could be necessary, but those are atypical in my experience). In fact, in this case it's going to potentially extend the time before ret2 can fire because there'll be the full 50ms of firing ret3 even if the retrieval would have completed in less than that. What you probably do need however is a production similar to ret2 that can handle a retrieval failure so that the system doesn't just stop when that occurs. If the retrieval buffer had a state indicator, like the perceptual/motor buffers do, then one could check that the retreival state was free to wait, but that's not available* in ACT-R 5. Though, a "unified" state mechanism for the buffers is something we're considering for ACT-R 6. Dan * There's actually an !eval! call that could be put on the LHS that would have that effect, but that's not really kosher ACT-R 5. From Jerry.Ball at williams.af.mil Mon Dec 2 12:20:49 2002 From: Jerry.Ball at williams.af.mil (Jerry.Ball at williams.af.mil) Date: Mon, 2 Dec 2002 10:20:49 -0700 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks Message-ID: <245656B34A151046B0997D34FA909F0F25720E@FSQBGE06> Yes, this would give you the ability to activate chunks that contain the retrieved chunk as a slot value, however, it would not activate chunks that are the slot values of the retrieved chunk (as the goal chunk does). From an architectural perspective, if the retrieval buffer is considered to be part of the "focus of attention" along with the goal buffer, then an argument can be made for spreading activation from the (slots of the) chunk in the retrieval buffer as well as from the chunk in the goal buffer. This argument is made stronger if the chunk in the goal buffer is essentially just another declarative memory chunk as has been suggested in defense of removal of the goal stack. That is, all declarative memory chunks in the focus of attention should spread activation to declarative memory (not just the goal chunk). Of course, this begs the question -- is the chunk in the retrieval buffer in the focus of attention? Jerry -----Original Message----- From: Frank E. Ritter [mailto:ritter at ist.psu.edu] Sent: Friday, November 29, 2002 9:37 AM To: Jerry.Ball at williams.af.mil; act-r-users+ at andrew.cmu.edu Subject: Re: [ACT-R-users] Spreading Activation and Retrieval Chunks At 15:24 -0700 27/11/02, Jerry.Ball at williams.af.mil wrote: >In ACT-R 5.0, only the goal chunk spreads activation to declarative memory. >This means that before a chunk can spread activation, it must become the >goal chunk. Thus, if a model retrieves a chunk from declarative memory and >wants to retrieve chunks associated with the retrieved chunk, the retrieved >chunk must first become the goal chunk. This makes it difficult to create a >model that follows associative links without putting the goal of following >the associative links into the declarative chunks themselves. > >Given that fact that activation in ACT-R 5.0 only spreads to directly >related chunks (i.e. there is no propagation beyond directly related >chunks), allowing activation to spread from the retrieval chunk as well as >the goal chunk would provide a secondary mechanism for spreading activation >and would eliminate the serial bottleneck of having to push retrieval chunks >into the goal buffer (which takes at least 1 production just to shuffle >chunks around) to follow associative links. couldn't you make the retrieval chunk part of the goal chunk, and get some, albeit, a lighter activation propogation? Cheers, Frank From Stefani.Nellen at urz.uni-heidelberg.de Mon Dec 2 13:34:15 2002 From: Stefani.Nellen at urz.uni-heidelberg.de (Stefani Nellen) Date: Mon, 02 Dec 2002 19:34:15 +0100 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks References: <245656B34A151046B0997D34FA909F0F25720E@FSQBGE06> Message-ID: <3DEBA7A8.7E515C08@ix.urz.uni-heidelberg.de> > > Of course, this begs the question -- is the chunk in the retrieval buffer in > the focus of attention? > > Jerry > Even more so than the goal chunk, I would say- one could think of the chunk in the retrieval buffer as one potential focus of the current attention (along with the contents in the perceptual buffers), while the chunk in the goal buffer could be thought of as more remote, more abstract- something that provides guidance for the current thinking and behavior, perhaps even on a metacogntive level. But perhaps this is overloading architectural components with meaning? Steffi > -----Original Message----- > From: Frank E. Ritter [mailto:ritter at ist.psu.edu] > Sent: Friday, November 29, 2002 9:37 AM > To: Jerry.Ball at williams.af.mil; act-r-users+ at andrew.cmu.edu > Subject: Re: [ACT-R-users] Spreading Activation and Retrieval Chunks > > At 15:24 -0700 27/11/02, Jerry.Ball at williams.af.mil wrote: > >In ACT-R 5.0, only the goal chunk spreads activation to declarative memory. > >This means that before a chunk can spread activation, it must become the > >goal chunk. Thus, if a model retrieves a chunk from declarative memory and > >wants to retrieve chunks associated with the retrieved chunk, the retrieved > >chunk must first become the goal chunk. This makes it difficult to create > a > >model that follows associative links without putting the goal of following > >the associative links into the declarative chunks themselves. > > > >Given that fact that activation in ACT-R 5.0 only spreads to directly > >related chunks (i.e. there is no propagation beyond directly related > >chunks), allowing activation to spread from the retrieval chunk as well as > >the goal chunk would provide a secondary mechanism for spreading activation > >and would eliminate the serial bottleneck of having to push retrieval > chunks > >into the goal buffer (which takes at least 1 production just to shuffle > >chunks around) to follow associative links. > > couldn't you make the retrieval chunk part of the goal chunk, and get > some, albeit, a lighter activation propogation? > > Cheers, > > Frank > > _______________________________________________ > ACT-R-users mailing list > ACT-R-users at act-r.psy.cmu.edu > http://act-r.psy.cmu.edu/mailman/listinfo/act-r-users -- Stefani Nellen Hans-Thoma-Str. 72 69121 Heidelberg Tel.: +49-(0)6221-373510 From Kevin.Gluck at williams.af.mil Mon Dec 2 14:07:00 2002 From: Kevin.Gluck at williams.af.mil (Kevin.Gluck at williams.af.mil) Date: Mon, 2 Dec 2002 12:07:00 -0700 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks Message-ID: <245656B34A151046B0997D34FA909F0F0973FF@FSQBGE06> Dan recently mentioned that a "unified" state mechanism is under consideration for ACT-R 6. Perhaps a unified spreading activation mechanism for the buffers would be worth considering, as well. -----Original Message----- From: Stefani Nellen [mailto:Stefani.Nellen at urz.uni-heidelberg.de] Sent: Monday, December 02, 2002 11:34 AM To: Jerry.Ball at williams.af.mil Cc: act-r-users+ at andrew.cmu.edu Subject: Re: [ACT-R-users] Spreading Activation and Retrieval Chunks > > Of course, this begs the question -- is the chunk in the retrieval buffer in > the focus of attention? > > Jerry > Even more so than the goal chunk, I would say- one could think of the chunk in the retrieval buffer as one potential focus of the current attention (along with the contents in the perceptual buffers), while the chunk in the goal buffer could be thought of as more remote, more abstract- something that provides guidance for the current thinking and behavior, perhaps even on a metacogntive level. But perhaps this is overloading architectural components with meaning? Steffi > -----Original Message----- > From: Frank E. Ritter [mailto:ritter at ist.psu.edu] > Sent: Friday, November 29, 2002 9:37 AM > To: Jerry.Ball at williams.af.mil; act-r-users+ at andrew.cmu.edu > Subject: Re: [ACT-R-users] Spreading Activation and Retrieval Chunks > > At 15:24 -0700 27/11/02, Jerry.Ball at williams.af.mil wrote: > >In ACT-R 5.0, only the goal chunk spreads activation to declarative memory. > >This means that before a chunk can spread activation, it must become the > >goal chunk. Thus, if a model retrieves a chunk from declarative memory and > >wants to retrieve chunks associated with the retrieved chunk, the retrieved > >chunk must first become the goal chunk. This makes it difficult to create > a > >model that follows associative links without putting the goal of following > >the associative links into the declarative chunks themselves. > > > >Given that fact that activation in ACT-R 5.0 only spreads to directly > >related chunks (i.e. there is no propagation beyond directly related > >chunks), allowing activation to spread from the retrieval chunk as well as > >the goal chunk would provide a secondary mechanism for spreading activation > >and would eliminate the serial bottleneck of having to push retrieval > chunks > >into the goal buffer (which takes at least 1 production just to shuffle > >chunks around) to follow associative links. > > couldn't you make the retrieval chunk part of the goal chunk, and get > some, albeit, a lighter activation propogation? > > Cheers, > > Frank > > _______________________________________________ > ACT-R-users mailing list > ACT-R-users at act-r.psy.cmu.edu > http://act-r.psy.cmu.edu/mailman/listinfo/act-r-users -- Stefani Nellen Hans-Thoma-Str. 72 69121 Heidelberg Tel.: +49-(0)6221-373510 _______________________________________________ ACT-R-users mailing list ACT-R-users at act-r.psy.cmu.edu http://act-r.psy.cmu.edu/mailman/listinfo/act-r-users From db30 at andrew.cmu.edu Mon Dec 2 15:59:48 2002 From: db30 at andrew.cmu.edu (Dan Bothell) Date: Mon, 02 Dec 2002 15:59:48 -0500 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks In-Reply-To: <245656B34A151046B0997D34FA909F0F0973FF@FSQBGE06> Message-ID: <3757669856.1038844788@Gristle> --On Monday, December 02, 2002 12:07 PM -0700 Kevin.Gluck at williams.af.mil wrote: > Dan recently mentioned that a "unified" state mechanism is under > consideration for ACT-R 6. Perhaps a unified spreading activation mechanism > for the buffers would be worth considering, as well. Design documentation of a potential framework for ACT-R 6 is something that I hope to have available in the not too distant future for discussion, but the details of specific functionalities are definitely something that I don't plan on putting in right away because I think they will require some serious discussions. As for the issue at hand, this is one of those things that I think needs to be analyzed and discussed thoroughly. I remember at some point in discussing buffers for ACT-R 5 that someone had suggested that all buffers (at least all real buffers i.e. not the state buffers) should be sources, but that isn't what we ended up implementing. It does seem like a system that would be easy to describe and build (which is a plus from my perspective), but it does have some ramifications from a modeling perspective that do need to be considered. Such a system would break backward compatibility and probably "invalidate" many existing models' predictions (a simple porting of an old model to such a system could produce quite different predictions). It isn't unheard of however to have things other than the goal be sources of activation. Looking back to ACT-R 4 with PM it was the case that the currently attended chunks of the perceptual systems (what would now be the chunks in the perceptual buffers) were sources of activation along with the goal, so perhaps it wouldn't be too big of a change. Dan From Wolfgang.Schoppek at uni-bayreuth.de Tue Dec 3 04:38:17 2002 From: Wolfgang.Schoppek at uni-bayreuth.de (Wolfgang Schoppek) Date: Tue, 03 Dec 2002 10:38:17 +0100 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks References: <3757669856.1038844788@Gristle> Message-ID: <3DEC7B89.EF875FF2@uni-bayreuth.de> I'm wondering why the term "working memory" has never been mentioned in this discussion. Up to ACT-R 4 and still, the goal chunk was used as working memory rather than as description of the goal. Currently, many researchers are exploring the benefits of having multiple buffers (see e.g. the imaginal buffer in the paper "An integrated theory of the mind" by Anderson, Byrne, and Lebiere to be found at the ACT-R web site). I'm experimenting with a free structure that can keep a number of chunks active without binding them to specific slots. I think this is appropriate for tasks where subjects cannot make sense of the material from the beginning but rather have to form their own structures in a learning process. I hope that all these efforts will result in an ACT-R theory of working memory. In the meantime, it would be helpful to have an experimental version of ACT-R where the behavior of the buffers can be felxibly controlled by parameters (e.g. turning on and off source activation for all buffers like with the :ga parameter for the goal chunk). -- Wolfgang ----------------------------------------------------------------- Dr. Wolfgang Schoppek Universitaet Bayreuth Tel.: +49 921 554140 http://www.uni-bayreuth.de/departments/psychologie/wolfgang.html ----------------------------------------------------------------- From N.A.Taatgen at ai.rug.nl Tue Dec 3 03:49:09 2002 From: N.A.Taatgen at ai.rug.nl (Niels Taatgen) Date: Tue, 3 Dec 2002 09:49:09 +0100 Subject: [ACT-R-users] Spreading Activation and Retrieval Chunks In-Reply-To: <3757669856.1038844788@Gristle> Message-ID: <16ED19B9-069C-11D7-BC39-0003930F23B6@ai.rug.nl> I think I have to agree with Dan that one should be very careful to change something like spreading activation, innocent though it may sound. Arguments in the line that it is more logical from the perspective from the architecture are what you could call "computer science" arguments. But one of the typical things for ACT-R has always been that changes are driven by psychological considerations. So a reason for this particular change would be, for example, that you can model a certain phenomenon more parsimoniously, or even better, that you can model a phenomenon that you couldn't model before. Apart from that, a change in the architecture will always have unwanted side-effects, and these side-effects may be hard to predict (actually, a manifestation of the good old Frame Problem for humans). A general change might be good for a particular type of model, but is it good for all models? Niels =============================================== Niels Taatgen - University of Groningen, Artificial Intelligence web: http://www.ai.rug.nl/~niels email: niels at ai.rug.nl Telephone: +31 50 363 6435 =============================================== From Kevin.Gluck at williams.af.mil Wed Dec 4 12:44:28 2002 From: Kevin.Gluck at williams.af.mil (Kevin.Gluck at williams.af.mil) Date: Wed, 4 Dec 2002 10:44:28 -0700 Subject: [ACT-R-users] BRIMS 2003 Message-ID: <245656B34A151046B0997D34FA909F0F097440@FSQBGE06> Please see the attached CFP for the 12th Annual Conference on Behavior Representation in Modeling and Simulation. Submissions are due January 17. The conference starts May 12. I hope to see many of you there! - Kevin <> ------------------------------------------------------- Kevin A. Gluck, PhD Research Psychologist Air Force Research Laboratory 6030 S. Kent St. Mesa, AZ 85212-6061 Ph: 480-988-6561 x-234 / DSN 474-6234 Fax: 480-988-6285 "Anyone with an idea whose time has come can accomplish anything provided they are willing to work hard enough." - Cecil Burney -------------- next part -------------- A non-text attachment was scrubbed... Name: CALL FOR PAPERS.doc Type: application/msword Size: 34816 bytes Desc: not available URL: From Kevin.Gluck at williams.af.mil Wed Dec 4 17:38:16 2002 From: Kevin.Gluck at williams.af.mil (Kevin.Gluck at williams.af.mil) Date: Wed, 4 Dec 2002 15:38:16 -0700 Subject: [ACT-R-users] BRIMS 2003 Message-ID: <245656B34A151046B0997D34FA909F0F09744D@FSQBGE06> The conference website-in-progress can be found at http://www.sisostds.org/cgf-br/03BRIMS/index.htm -----Original Message----- From: Kevin.Gluck at williams.af.mil [mailto:Kevin.Gluck at williams.af.mil] Sent: Wednesday, December 04, 2002 10:44 AM To: act-r-users at act-r.psy.cmu.edu Subject: [ACT-R-users] BRIMS 2003 Please see the attached CFP for the 12th Annual Conference on Behavior Representation in Modeling and Simulation. Submissions are due January 17. The conference starts May 12. I hope to see many of you there! - Kevin <> ------------------------------------------------------- Kevin A. Gluck, PhD Research Psychologist Air Force Research Laboratory 6030 S. Kent St. Mesa, AZ 85212-6061 Ph: 480-988-6561 x-234 / DSN 474-6234 Fax: 480-988-6285 "Anyone with an idea whose time has come can accomplish anything provided they are willing to work hard enough." - Cecil Burney From EuroCogSci03 at uos.de Fri Dec 6 05:15:00 2002 From: EuroCogSci03 at uos.de (Anna Jungeilges) Date: Fri, 6 Dec 2002 11:15:00 +0100 Subject: [ACT-R-users] EuroCogSci03: Call for Papers Message-ID: <000001c29d10$55b2bd50$454ead83@UOSFB08COGPSY.clki.uniosnabrueck.de> EUROCOGSCI03: European Cognitive Science Conference (We apologize for any multiple postings) Dates: Sept 10 through Sept 13, 2003 (Main Conference) Sept 9 (noon) - Sept 10 (noon) Tutorials at the University of Osnabrueck / Germany EuroCogSci03 is jointly organized by the Cognitive Science Society, the premier society for basic and applied cognitive science research (see http://www.cognitivesciencesociety.org) and the German Cognitive Science Society (Gesellschaft fuer Kognitionswissenschaft, GK, see http://www.gk-ev.de) as a major event gathering leading cognitive scientists in Europe. We encourage researchers especially from Europe and from across the world to submit their high quality work, attend EuroCogSci03, meet with European researchers and practitioners and update their knowledge about the latest scientific progress made in Cognitive Science. The website of the conference is: www.eurocogsci03.uos.de Plenary speakers and invited symposia participants: Michel Fayol / Clermont Ferrand Rainer Goebel / Maastricht Arthur Graesser / Memphis Pim Haselager / Nijmegen Alan Lesgold / Pittsburgh Hanspeter Mallot / Tuebingen Laura Martignon / Berlin Joelle Proust / Paris Hans Rott / Regensburg Elsbeth Stern / Berlin Ipke Wachsmuth / Bielefeld Sidney Wiener / Paris York Winter / Munich This conference will particularly feature showcases of Cognitive Science in Europe. Institutes with prominent work in Cognitive Science from within Europe are asked to succinctly describe their facilities, major research topics and the contributing scientists in a two-page summary. Positively reviewed submissions will be printed in the conference proceedings and a respective poster is to be presented at the conference. The submission categories and deadlines are: March 1, 2003 * Six-page papers. Refereed papers for publication in Proceedings. These will be presented as traditional talks or posters. * Symposia. Complete proposals for a 90 minute symposium on current research topics. Proposals should list participants and moderator, and include a one-page summary of the topic. * Tutorials. Submissions on topics of major importance in Cognitive Science are requested for half-day tutorials (to be held on Sept. 9 afternoon or Sept. 10 morning) or full-day tutorials (Sept. 9 afternoon AND Sept. 10 morning). April 30, 2003 * Notification of acceptance for papers, symposia and tutorials. May 9, 2003 * Poster Abstracts submission. One page abstracts can be submitted and will be reviewed. Accepted posters will be presented at the conference and will appear in the Proceedings. May 30, 2003 * Camera ready papers and abstracts must be provided and conference fees must be paid. CONFERENCE CHAIRS: Franz Schmalhofer / University of Osnabrueck Richard Young / University of Hertfordshire Please address all correspondence to EuroCogSci03 at uos.de For further information, see the conference website: www.eurocogsci03.uos.de From manu at media.unisi.it Sun Dec 8 14:04:07 2002 From: manu at media.unisi.it (HAAMAHA2003 Local committee) Date: Sun, 8 Dec 2002 20:04:07 +0100 Subject: [ACT-R-users] HAAMAHA 2003 conference Message-ID: <015601c29eed$0d0a6ce0$c9071c97@Brunello> ********************************************** Our apologies for possible multiple postings --------------------------------------------- HAAMAHA 2003 8th International Conference on Human Aspects of Advanced Manufacturing: Agility & Hybrid Automation (Rome, 27-30 May 2003). http://www.media.unisi.it/haamaha2003 Dear Colleague, as you may be aware, the deadline for the submission of papers for the HAAMAHA conference 2003 is approaching. In the following we remind you the main dates: Abstract Submission: 15st December 2002 Review Notification: 25th January 2003 Camera-ready papers: 16th March 2003 Proposals for Demonstations/Panel: 31st January 2003 We are pleased to inform all the authors that a selection of paper from the Conference will be published in the international journal "Human Factors and Ergonomics in Manufacturing" by Wiley & Sons. As a preliminary program of HAAMAHA2003 we anticipate a list of the plenary speakers R. Badham | UNIVERSITY of WOLLONGONG - AUSTRALIA | G. Bradley | MID-SWEDEN UNIVERSITY - SWEDEN | F. Butera | UNIVERSITA' degli STUDI MILANO BICOCCA - ITALY | P. Falzon | CONSERVATOIRE NATIONAL des ARTS et METIERS - FRANCE | W. Grudzewski | WARSAW SCHOOL of ECONOMICS - POLAND | M. Helander | NANYANG TECHNOLOGICAL UNIVERSITY - SINGAPORE | E. Hollnagel | UNIVERSITY of LINKOPING - SWEDEN | W. Karwowski | UNIVERSITY of LOUISVILLE - USA | T. Kieselbach | UNIVERSITAT BREMEN - GERMANY | J.Wilson | UNIVERSITY OF NOTTINGHAM - UK | We would appreciate if you could support us in informing about the deadlines your colleagues and those who may be interested in contributing and joining the Conference. We thank you in advance for your help and look forward to meeting you in Rome. -------------- next part -------------- An HTML attachment was scrubbed... URL: From Kevin.Gluck at williams.af.mil Thu Dec 12 20:12:08 2002 From: Kevin.Gluck at williams.af.mil (Kevin.Gluck at williams.af.mil) Date: Thu, 12 Dec 2002 18:12:08 -0700 Subject: [ACT-R-users] Paper Submissions for BRIMS 2003 Message-ID: <245656B34A151046B0997D34FA909F0F0974DE@FSQBGE06> To all authors interested in submitting a paper to the 12th Annual Conference on Behavior Representation in Modeling and Simulation (BRIMS 2003), Please note the submission guidelines require FULL PAPERS by the January 17 deadline. This is a departure from past years, when only abstracts were due by the initial submission deadline. The call for papers, which also includes guidelines for submitting symposia, panel discussions, and tutorials, is available at the conference website: http://www.sisostds.org/cgf-br/03BRIMS/index.htm We look forward to seeing you in May! Kevin Gluck Conference Chair ------------------------------------------------------- Kevin A. Gluck, PhD Research Psychologist Air Force Research Laboratory 6030 S. Kent St. Mesa, AZ 85212-6061 Ph: 480-988-6561 x-234 / DSN 474-6234 Fax: 480-988-6285 https://www.williams.af.mil/html/palmlab.htm "Anyone with an idea whose time has come can accomplish anything provided they are willing to work hard enough." - Cecil Burney From ferrix at cs.unitn.it Thu Dec 19 06:28:16 2002 From: ferrix at cs.unitn.it (Roberta Ferrario) Date: Thu, 19 Dec 2002 12:28:16 +0100 Subject: [ACT-R-users] CFP: CONTEXT'03, the Fourth International and Interdisciplinary Conference on Modeling and Using Context Message-ID: <001301c2a751$b995ff80$d9c7cdc1@Eolo> ============================================================== We apologize for multiple copies of this call for papers ============================================================= | CONTEXT'03 | | Fourth International and Interdisciplinary Conference on | Modeling and Using Context | | Stanford, California (USA) | June 23-25, 2003 | | (www.context.umcs.maine.edu/CONTEXT-03) | +--------------------------------------------------------------+ The Fourth International and Interdisciplinary Conference on Modeling and Using Context (CONTEXT'03) will provide a high-quality forum for discussions about context among researchers active in artificial intelligence and other areas of computer science, cognitive science, linguistics, the organizational sciences, philosophy, and psychology. Context affects a wide range of activities in humans and animals as well as in artificial agents and other computer programs. The importance of context is widely acknowledged, and "context" has become an area of study in its own right, as evidenced by the numerous workshops, symposia, seminars, and conferences held recently. CONTEXT, the oldest conference series focusing on context, is unique due to its strong emphasis on interdisciplinary research. Previous CONTEXT conferences have been held in Rio de Janeiro, Brazil (CONTEXT'97), Trento, Italy (CONTEXT'99), and Dundee, Scotland (CONTEXT'01). Each of these brought together researchers in many disparate fields to discuss and report on research on context-related topics. The proceedings of CONTEXT'03 will be published in a Lecture Notes series (http://www.springer.de/comp/lnai) of Springer?Verlag, as were those of the previous two CONTEXT conferences. TOPICS OF INTEREST To guide potential submissions, a representative sampling of topics of interest for CONTEXT'03 are as follows (in alphabetical order). This is not an exhaustive list, and other contributions are welcome, although all submissions must have a focus on context. Analogy and case-based reasoning Autonomous Agents and Agent-based Systems Cognitive Modeling Commonsense Reasoning Context Issues in Databases Context-aware Applications Contextual effects on language Contextual effects on problem-solving, understanding and production decision-making, and categorization Decision Support and Expert Systems Distributed Information Systems Formal Theories of Context Heterogeneous Information Integration Human-Computer Interaction Information Management Intelligent Tutoring Systems Intelligent/Semantic Web Systems Interagent Communication Knowledge Engineering and Management Knowledge Representation Machine Learning Multiagent Systems Natural Language Processing Neuroscience and context Organizational Theory and Design Philosophical Foundations SUBMISSION OF PAPERS Since CONTEXT'03 will be an interdisciplinary forum, all submissions, in addition to being evaluated for their technical merit, will be evaluated for their accessibility to an interdisciplinary audience. Works that transcend disciplinary boundaries are especially encouraged. Papers will be accepted either for oral presentation or for presentation at a poster session. Each submission will be evaluated by three referees. Complete formatting requirements and detailed instructions for authors can be found on the conference Web page. Note that papers cannot be longer than 14 pages. Papers must be submitted electronically--no hardcopy submissions will be accepted without prior approval from the Program Co-Chairs well in advance of the submission deadline. LaTeX and Word templates are available at the conference Web page. Papers must be in PDF format. See the conference Web page for instructions on converting to this format from Word, LaTeX, etc. Submitted papers should be received by the Program Co-Chairs no later than January 27, 2003. The conference Web page contains instructions for submitting papers electronically. IMPORTANT DATES Paper submission deadline....................................January 27, 2003 Notification of acceptance/rejection for all submissions.......March 13, 2003 Deadline for final versions of accepted papers.................April 13, 2003 Conference...................................................June 23-?25, 2003 CONFERENCE CHAIR Fausto Giunchiglia (fausto at cs.unitn.it) Universita degli Studi di Trento, Italy PROGRAM CO-CHAIRS Patrick Blackburn (Patrick.Blackburn at loria.fr) LORIA, France Chiara Ghidini (C.Ghidini at csc.liv.ac.uk) University of Liverpool, UK Roy Turner (rmt at umcs.maine.edu) University of Maine, USA STEERING COMMITTEE Varol Akman (akman at cs.bilkent.edu.tr) Bilkent University, Turkey Massimo Benerecetti (bene at cs.unitn.it) University of Naples, Italy Paolo Bouquet (bouquet at cs.unitn.it) Universita degli Studi di Trento, Italy Patrick Brezillon (Patrick.Brezillon at lip6.fr) University of Paris VI, France Boicho Kokinov (bkokinov at nbu.bg) New Bulgarian University, Bulgaria John Perry (john at csli.stanford.edu) Stanford University, USA Francois Recanati (Francois.Recanati at ehess.fr) L'Ecole Polytechnique, France Luciano Serafini (serafini at irst.itc.it) Istituto Trentino di Cultura (ITC), Italy Rich Thomason (rich at thomason.org) University of Michigan, USA Roger A. Young (R.A.YOUNG at dundee.ac.uk) University of Dundee, UK PROGRAM COMMITTEE Horacio Arlo-Costa Carnegie Mellon University, USA John Barnden The University of Birmingham, UK Carla Bazzanella Universit? degli Studi di Torino, Italy John Bell University of London, UK Jose Luis Bermudez University of Stirling, UK Matteo Bonifacio University of Trento, Italy Anind K. Dey Intel Research, California, USA Christo Dichev Winston Salem State University, USA Bruce Edmonds Manchester Metropolitan University, UK Paul Feltovich University of West Florida, USA Tim Fernando Trinity College, Dublin, Ireland Anita Fetzer Universitaet Stuttgart Christopher Gauker University of Cincinnati, USA Alain Giboin INRIA, France Avelino Gonzalez University of Central Florida, USA Jerry Hobbs USC/ISI, USA Lucja Iwanska LxLinks, Inc., Michigan, USA Ruth Kempson King's College London, UK David Leake Indiana University, USA Mark Maybury MITRE Corporation, Massachusetts, USA Bernard Moulin Universit? Laval, Canada Rolf Nossum Agder University College, Norway Jean-Charles Pomerol DRITT/Universite P and M Curie, France Marina Sbis? University of Trieste, Italy Carles Sierra Spanish Scientific Research Council, Spain Munindar Singh North Carolina State University, USA Steffen Staab University of Karlsruhe, Germany Elise Turner University of Maine, USA Peter Turney National Research Council, Ontario, Canada Johan van Benthem University of Amsterdam, The Netherlands Robert J. van den Bosch Univ. Hospital Groningen, The Netherlands Teun A. van Dijk Universitat Pompeu Fabra, Barcelona, Spain Terry Winograd Stanford University, USA PUBLICITY CHAIR Roberta Ferrario (ferrix at cs.unitn.it) Universita degli Studi di Trento, Italy LOCAL ARRANGEMENTS COMMITTEE Dikran Karagueuzian, Chair (dikran at roslin.stanford.edu) Michele King (mking at csli.stanford.edu) John Perry (john at csli.stanford.edu) Keith Devlin (devlin at csli.stanford.edu) Elisabetta Zibetti (ezibetti at psych.stanford.edu) ********************************************************* * For more information, see www.context.umcs.maine.edu. * ********************************************************* -------------- next part -------------- An HTML attachment was scrubbed... URL: From rsun at ari1.cecs.missouri.edu Fri Dec 20 12:24:30 2002 From: rsun at ari1.cecs.missouri.edu (Ron Sun) Date: Fri, 20 Dec 2002 11:24:30 -0600 Subject: [ACT-R-users] A new issue of Cognitive Systems Research Message-ID: <200212201724.gBKHOUxB028893@ari1.cecs.missouri.edu> From: "ScienceDirect" Subject: New journal issues available on ScienceDirect New issues are now available for the following journals on ScienceDirect Cognitive Systems Research Volume 4, Issue 1, Pages 1-88 http://www.cecs.missouri.edu/~rsun/journal.html =============================================================================== Cognitive Systems Research: Volume 4, Issue 1, Pages 1-88 (March 2003) TABLE OF CONTENTS Interrelations between the BDI primitives: Towards heterogeneous agents, Pages 1-22 Maria Fasli http://www.sciencedirect.com/science/article/B6W6C-47G3MBB-1/1/7a8c45107ff31d77945ab8350b308d27 The grounding of motivation in artificial animals: Indices of motivational behavior, Pages 23-55 Tony Savage http://www.sciencedirect.com/science/article/B6W6C-47BX2VC-6/1/2fc5e4f96b8d644e08791c712c7dcc33 Problem solving: Increased planning with practice, Pages 57-76 Glenn Gunzelmann and John R. Anderson http://www.sciencedirect.com/science/article/B6W6C-47GGC2Y-3/1/b7c0df3dccb853de78629846dce75457 Review of Visual Attention and Cortical Circuits J. Braun, K. Christof & J. Davis; MIT Press, 2001; ISBN 0-262-02493-4, Pages 77-80 R. Farivar http://www.sciencedirect.com/science/article/B6W6C-47BX2VC-3/1/358c7eee523713e4dac645a7a164f9ab Call for papers: Workshop on cognitive modeling of agents and multi-agents interactions. During IJCAI '2003 9-11 August, 2003. Acapulco, Mexico, Pages 87-88 http://www.sciencedirect.com/science/article/B6W6C-47GGC2Y-4/1/fb2671e2df5ec6949084c677ea9c09ba =============================================================================== See the following Web pages for submission, subscription and other information for the journal Cognitive Systems Research: http://www.cecs.missouri.edu/~rsun/journal.html If you have questions, locate the Help Desk at http://www.info.sciencedirect.com/contacts. =================================================================== Professor Ron Sun, Ph.D CECS Department, 201 EBW phone: (573) 884-7662 University of Missouri-Columbia fax: (573) 882 8318 Columbia, MO 65211-2060 email: rsun at cecs.missouri.edu http://www.cecs.missouri.edu/~rsun http://www.cecs.missouri.edu/~rsun/journal.html =================================================================== From ja+ at cmu.edu Mon Dec 23 14:01:37 2002 From: ja+ at cmu.edu (John Anderson) Date: Mon, 23 Dec 2002 13:01:37 -0600 Subject: [ACT-R-users] season greetings Message-ID: An HTML attachment was scrubbed... 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