From Peter.Pirolli at parc.com Wed Jan 2 14:01:41 2013 From: Peter.Pirolli at parc.com (Peter.Pirolli at parc.com) Date: Wed, 2 Jan 2013 19:01:41 +0000 Subject: [ACT-R-users] Computational predictive models of health behavior change Message-ID: Dear ACT-R-ers: One of the greater challenges in the U.S. (and increasingly elsewhere) is the growing burden of costs associated with health-damaging but modifiable behaviors. I was recently asked by a program director of a national funding agency to suggest researchers in academia who are working on computational predictive models appropriate to capture health-related behaviors and behavior change, and so I am seeking your help in producing such a list. It seems to me that the area of behavior change in real-world settings is ripe for predictive models after more than a 100 years of behavioral science and clinical studies, plus all the recent progress in cognitive models, neurocomputational models, user models, predictive analytics, machine learning, tutoring systems, smart homes, ubiquitous computing, and more. Please send your suggestions to pirolli at parc.com From s.rodgers at tier1performance.com Wed Jan 2 21:10:48 2013 From: s.rodgers at tier1performance.com (Stu Rodgers) Date: Thu, 3 Jan 2013 02:10:48 +0000 Subject: [ACT-R-users] Cognitive Science Research Position / Opportunity Message-ID: http://www.tier1performance.com/jobs/srjob/56947114 Dear Colleagues, We have a research scientist position (an entry to mid-career position within the field of cognitive science or closely related with a focus on interactive learning environments, simulations, and/or human performance modeling) for which we are actively seeking high quality candidates. If you are aware of someone who may be a fit and wants to be part of a fun and growing company (inc 5000 6 times and best places to work), I would greatly appreciate you forwarding a reference. Feel free to forward the listing. Kindest regards and Happy New Year! Stu ........................................ STUART RODGERS Managing Director TiER1 Performance Solutions 100 E. Rivercenter Blvd., Suite 100, Covington, KY 41011 o: 859.663.2114 | ext 2228 | m: 937.903.0558 e: s.rodgers at tier1performance.com www.tier1performance.com inc. 5000, 2007, 2008, 2009, 2010, 2011, 2012 | U.S. Chamber of Commerce Blue Ribbon Award, 2007 & 2008 Best Places to Work in Cincinnati, 2010, 2011 | Greater Cincinnati "Fast 55", 2005, 2006, 2008, 2010, 2011 U.S. SBA Kentucky Small Business of the Year, 2007 | PMI Small Business Award of Excellence, 2007 From grayw at rpi.edu Mon Jan 7 11:23:51 2013 From: grayw at rpi.edu (Gray, Wayne) Date: Mon, 7 Jan 2013 16:23:51 +0000 Subject: [ACT-R-users] Job openings at RPI Message-ID: <5389ED9F7D5CDE4B89E1DB6E478EE1651F7A69CC@EX14MB1.win.rpi.edu> All, Greetings. The Cognitive Science Department at Rensselaer is interested in hiring a mid-career (i.e., current Assoc Prof) to senior-career (i.e., current Full Prof) person who might be interested in Heading the Department. http://www.hass.rpi.edu/pl/2012-job-announcement-cognitive-science Although the announcement went out via email lists in the fall, there were delays in getting it out to more standard outlets. (I am not on the search committee so I do not know the details.) We welcome all candidates. We are especially welcoming of women and minorities. Furthermore we have, recently, been specifically instructed to cast the net wider to include people currently at the Assoc. Prof. level with strong records of research and funding, and who show strong leadership potential. Also note that although I have phrased the background in terms of academic ranks (i.e., current Assoc or Full Prof), we are looking for distinguished scholars and researchers who are mid- or senior-career regardless of whether or not you are currently employed at a university. I should also note that no one who has applied has been rejected. Our senior administration is distressed by the size and diversity of the current pool, not by its quality. **Rensselaer**Rensselaer**Rensselaer**Rensselaer**Rensselaer** Wayne D. Gray Professor of Cognitive Science & Professor of Computer Science Rensselaer Polytechnic Institute Carnegie Building (rm 108) ;;for all surface mail & deliveries 110 8th St.; Troy, NY 12180 EMAIL: grayw at rpi.edu, Office: 518-276-3315, Fax: 518-276-3017 for general information see: http://www.rpi.edu/~grayw/ for On-Line publications see: http://www.rpi.edu/~grayw/pubs/ for the CogWorks Lab see: http://www.cogsci.rpi.edu/cogworks/ -------------- next part -------------- An HTML attachment was scrubbed... URL: From Fehmida at mdx.ac Thu Jan 10 07:54:11 2013 From: Fehmida at mdx.ac (Fehmida Hussain) Date: Thu, 10 Jan 2013 16:54:11 +0400 Subject: [ACT-R-users] =?windows-1252?q?Call_for_papers=3A_Second_Internat?= =?windows-1252?q?ional_Conference_on_=91Emerging_Research_Paradigms_in_Bu?= =?windows-1252?q?siness_and_Social_Sciences?= Message-ID: <7777899C4AF7AF4EA5D42A46A83FF48A3995E1A307@MUDMAIL.mdx.ac> Aplologies for Cross postings. Second International Conference ERPBSS Second International Conference on Emerging Research Paradigms in Business and Social Sciences Tuesday 26th ? Thursday 28th November 2013 Venue: The Address, Dubai Mall, Dubai UAE Middlesex University Dubai takes great pleasure in announcing the Second International Conference on Emerging Research Paradigms in Business and Social Sciences (ERPBSS-2013). Important Deadlines * Submission of Abstract :Tuesday 5th March 2013 * Submission of Full Paper :Wednesday 26th June 2013 * *Early Bird Registration:Thursday 11th July 2013 * Normal Registration: Friday 12th July ? Saturday 26th October 2013 * Late Registration: Sunday 27th October ? 19th November 2013 * Student Registration: Saturday 26th October 2013 Track 6: Information and Communications Technology The information and communications technology track of this conference aims to examine emerging paradigms and innovative practices, particularly those related to the adoption, use and implications of information and communication technology. We are seeking papers that engage theoretically with the subject area and/or signify pioneering applications and developments. The objective is to present work that is transformative and which embraces serious intellectual discussion. Although we are open to any submission that is aligned with the goals of the conference and this track, we do encourage submissions relating to the following themes: * Web 2.0, Web 3.0, social media, and social computing * Cloud Computing and Services in Global Settings * ICT and sustainability * Ethical, legal and social issues in the digital age * ICT adoption, use, and value creation * Social shaping of information technology * Virtual and augmented reality * Educational technologies, and mobile and ubiquitous learning * Virtualization and technologization of everyday life * Mobile applications and services * New developments in e-business, e-learning, e-government, e-tourism * Applications of decision support systems, expert systems and artificial intelligence * Security technologies, cyber security, digital forensics and biometrics * Information systems, information and knowledge management strategies * Network management and innovation * Human-Computer Interaction * Information Technology Project Management * IS/IT Security and Privacy For details see conference website : http://www.mdx.ac/conference/ If you have any questins please feel free to contact me. Kind Regards Dr. Fehmida Hussain fehmida at mdx.ac Senior Lecturer School of Science and Technology Middlesex University Dubai Block 16, Room 304 Tel. +971 4 4461248 Fax +971 4 367 8043 www.mdx.ac Disclaimer: This email and any files transmitted with it are intended for, and should only be read by, the intended addressee. Its contents are confidential and if you are not the intended addressee, please notify the sender immediately and delete all records of the message from your computer. Any reproduction, dissemination, copying, disclosure, modification and / or publication of this message without the prior written consent of the sender are strictly prohibited. -------------- next part -------------- An HTML attachment was scrubbed... URL: From cfp at icnc-fskd.lntu.edu.cn Sat Jan 12 07:41:39 2013 From: cfp at icnc-fskd.lntu.edu.cn (X.F. Meng) Date: Sat, 12 Jan 2013 20:41:39 +0800 Subject: [ACT-R-users] ICNC-FSKD 2013 Extended Submission Deadline 10 March: IEEE Xplore/EI Compendex/ISI Message-ID: <62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey> Dear Colleague, Upon numerous requests, the upcoming 9th International Conference on Natural Computation (ICNC 2013) and 10th International Conference on Fuzzy Systems and Knowledge Discovery (FSKD 2013) extend the submission deadline to 10 March 2013. We cordially invite you to submit a paper to ICNC-FSKD 2013, to be jointly held from 23-25 July 2013 in Shenyang, China. Shenyang, the largest city in Northeast China, has a celebrated history dating back to the Warring States of 476 BC. It is the birthplace of the Qing Dynasty (1644-1911) and has many cultural relics which symbolize the prosperity and subsequent decline of the last feudal dynasty in China. Shenyang has one of China's the two best preserved imperial palace complexes, along with the famous Zhaoling Tomb and Fuling Tomb. Shenyang is also renowned for its mild summer and mouth-watering local food. As with the past ICNC-FSKD conferences, all papers in conference proceedings will be submitted to both EI Compendex and ISTP (ISI Proceedings), as well as IEEE Xplore. Extended versions of selected best papers will appear in an ICNC-FSKD special issue of an SCI-indexed journal. ICNC-FSKD 2013 is technically co-sponsored by the IEEE Circuits and Systems Society. ICNC-FSKD is a premier international forum for scientists and researchers to present the state of the art of data mining and intelligent methods inspired from nature, particularly biological, linguistic, and physical systems, with applications to computers, circuits, systems, control, robotics, communications, and more. This is an exciting and emerging interdisciplinary area in which a wide range of theory and methodologies are being investigated and developed to tackle complex and challenging problems. The registration fee of US-D390 includes proceedings, lunches, dinners, banquet, coffee breaks, and all technical sessions. To promote international participation of researchers from outside the country/region where the conference is held (i.e., China?s mainland), researchers outside of China?s mainland are encouraged to propose invited sessions. An honorarium of US-D400 will be enjoyed by the organizer(s) for each completed (with at least 6 registered papers) invited session. The first author of each paper in an invited session must not be affiliated with an organization in China?s mainland. "(Invited Paper)" may be added below the title of each paper in the invited sessions. Invited session organizers will solicit submissions, conduct reviews and recommend accept/reject decisions on the submitted papers. Invited session organizers will be able to set their own submission and review schedules, as long as a set of recommended papers is determined by 3 June 2013. Each invited session proposal should include: (1) the name, bio, and contact information of each organizer of the invited session; (2) the title and a short synopsis of the invited session. Please send your proposal to icnc_fskd_2013 at 126.com For more information, visit the conference web page: http://icnc-fskd.lntu.edu.cn/ If you have any questions after visiting the conference web page, please email the secretariat at icnc_fskd_2013 at 126.com Join us at this major event in historical Shenyang !!! Organizing Committee icnc_fskd_2013 at 126.com P.S.: Kindly forward to your colleagues and students in your school/department. If you wish to unsubscribe, in which case we apologize, please reply with " %{RECEIVER_ADDRESS} " in your email subject. Thanks. -------------- next part -------------- An HTML attachment was scrubbed... URL: From coty at cmu.edu Tue Jan 15 09:05:20 2013 From: coty at cmu.edu (Cleotilde Gonzalez) Date: Tue, 15 Jan 2013 14:05:20 +0000 Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <17386_1358258471_r0FE1Aik029054_62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey> References: <17386_1358258471_r0FE1Aik029054_62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey> Message-ID: <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> ACT-R friends, During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value. What would a negative value of decay mean? just curiosity, I don't think we are going to go that far :-) Coty -------------- next part -------------- An HTML attachment was scrubbed... URL: From troy.d.kelley6.civ at mail.mil Tue Jan 15 09:22:58 2013 From: troy.d.kelley6.civ at mail.mil (Kelley, Troy D CIV (US)) Date: Tue, 15 Jan 2013 14:22:58 +0000 Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> Message-ID: Coty, We have used very fast decay rates for perceptual memories on our robot (using SS-RICS). This is because the robot is perceiving so much information, so quickly, and we need to get rid of most of it as quickly as possible. This also means that you need different activation equations for different memory types. So we can set activation equations based on memory type. We have also looked at using an equation that will reverse the activation..so activation in the negative direction. We have been experimenting using this as an instantiation of negative reinforcement; so trying to get rid of a behavior based on punishment. This is in cases where we are using retrieval as the condition to execute a behavior (not utility). This also helps to get around the problem of executing a goal over and over because the activation of a retrieval continues to rise. Troy. On 1/15/13 9:05 AM, "Cleotilde Gonzalez" wrote: ACT-R friends, During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value. What would a negative value of decay mean? just curiosity, I don't think we are going to go that far :-) Coty ________________________________ _______________________________________________ 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 Troy D. Kelley RDRL-HRS-E Cognitive Robotics and Modeling Team Leader Human Research and Engineering Directorate U.S. Army Research Laboratory Aberdeen, MD 21005 Phone 410-278-5869 or 410-278-6748 Note my new email address: troy.d.kelley6.civ at mail.mil -------------- next part -------------- An HTML attachment was scrubbed... URL: From n.a.taatgen at rug.nl Tue Jan 15 09:25:58 2013 From: n.a.taatgen at rug.nl (Niels Taatgen) Date: Tue, 15 Jan 2013 15:25:58 +0100 Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> References: <17386_1358258471_r0FE1Aik029054_62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey> <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> Message-ID: <81060A36-AF1D-4A4C-BAF9-D2D2FCBAEC25@rug.nl> Negative decay would be.... Incubation? Consolidation? It would mean the activation would increase instead of decrease. More realistically, I and others have experimented with values in the 0.2-0.3 range when dealing with models of multiday experiments. Jon Fincham and John Anderson wrote a paper about it: http://act-r.psy.cmu.edu/publications/pubinfo.php?id=133 On Jan 15, 2013, at 3:05 PM, Cleotilde Gonzalez wrote: > ACT-R friends, > During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value. What would a negative value of decay mean? just curiosity, I don't think we are going to go that far :-) > > Coty > _______________________________________________ > 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 ================================================= Niels Taatgen - Professor University of Groningen, Artificial Intelligence web: http://www.ai.rug.nl/~niels email: n.a.taatgen at rug.nl Telephone: +31 50 3636435 Office: Bernouilliborg 322 ================================================= -------------- next part -------------- An HTML attachment was scrubbed... URL: From coty at cmu.edu Tue Jan 15 09:41:17 2013 From: coty at cmu.edu (Cleotilde Gonzalez) Date: Tue, 15 Jan 2013 14:41:17 +0000 Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <81060A36-AF1D-4A4C-BAF9-D2D2FCBAEC25@rug.nl> References: <17386_1358258471_r0FE1Aik029054_62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey> <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> <81060A36-AF1D-4A4C-BAF9-D2D2FCBAEC25@rug.nl> Message-ID: <64368A2D531CFE4AAE1B46464451F8760A9DBD@PGH-MSGMB-03.andrew.ad.cmu.edu> thanks a lot for the reference! From: Niels Taatgen [mailto:n.a.taatgen at rug.nl] Sent: Tuesday, January 15, 2013 9:26 AM To: Cleotilde Gonzalez Cc: act-r-users at act-r.psy.cmu.edu Subject: Re: [ACT-R-users] what does negative decay mean? Negative decay would be.... Incubation? Consolidation? It would mean the activation would increase instead of decrease. More realistically, I and others have experimented with values in the 0.2-0.3 range when dealing with models of multiday experiments. Jon Fincham and John Anderson wrote a paper about it: http://act-r.psy.cmu.edu/publications/pubinfo.php?id=133 On Jan 15, 2013, at 3:05 PM, Cleotilde Gonzalez > wrote: ACT-R friends, During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value. What would a negative value of decay mean? just curiosity, I don't think we are going to go that far :-) Coty _______________________________________________ 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 ================================================= Niels Taatgen - Professor University of Groningen, Artificial Intelligence web: http://www.ai.rug.nl/~niels email: n.a.taatgen at rug.nl Telephone: +31 50 3636435 Office: Bernouilliborg 322 ================================================= -------------- next part -------------- An HTML attachment was scrubbed... URL: From Glenn.Gunzelmann at wpafb.af.mil Tue Jan 15 10:59:20 2013 From: Glenn.Gunzelmann at wpafb.af.mil (Gunzelmann, Glenn F Civ USAF AFMC 711 HPW/RHAC) Date: Tue, 15 Jan 2013 10:59:20 -0500 Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <64368A2D531CFE4AAE1B46464451F8760A9DBD@PGH-MSGMB-03.andrew.ad.cmu.edu> References: <17386_1358258471_r0FE1Aik029054_62486E0373816AB48EC3111A8ABB0BC9@ivvppbpey><64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu><81060A36-AF1D-4A4C-BAF9-D2D2FCBAEC25@rug.nl> <64368A2D531CFE4AAE1B46464451F8760A9DBD@PGH-MSGMB-03.andrew.ad.cmu.edu> Message-ID: We have used higher values for the decay parameter to represent degraded learning under conditions of fatigue: http://actr.psy.cmu.edu/publications/pubinfo.php?id=914 -Glenn -----Original Message----- From: act-r-users-bounces at act-r.psy.cmu.edu [mailto:act-r-users-bounces at act-r.psy.cmu.edu] On Behalf Of Cleotilde Gonzalez Sent: Tuesday, January 15, 2013 9:41 AM To: Niels Taatgen Cc: act-r-users at act-r.psy.cmu.edu Subject: Re: [ACT-R-users] what does negative decay mean? thanks a lot for the reference! From: Niels Taatgen [mailto:n.a.taatgen at rug.nl] Sent: Tuesday, January 15, 2013 9:26 AM To: Cleotilde Gonzalez Cc: act-r-users at act-r.psy.cmu.edu Subject: Re: [ACT-R-users] what does negative decay mean? Negative decay would be.... Incubation? Consolidation? It would mean the activation would increase instead of decrease. More realistically, I and others have experimented with values in the 0.2-0.3 range when dealing with models of multiday experiments. Jon Fincham and John Anderson wrote a paper about it: http://act-r.psy.cmu.edu/publications/pubinfo.php?id=133 On Jan 15, 2013, at 3:05 PM, Cleotilde Gonzalez wrote: ACT-R friends, During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value. What would a negative value of decay mean? just curiosity, I don't think we are going to go that far :-) Coty _______________________________________________ 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 ================================================= Niels Taatgen - Professor University of Groningen, Artificial Intelligence web: http://www.ai.rug.nl/~niels email: n.a.taatgen at rug.nl Telephone: +31 50 3636435 Office: Bernouilliborg 322 ================================================= -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5692 bytes Desc: not available URL: From mpavone at dmi.unict.it Tue Jan 15 13:43:30 2013 From: mpavone at dmi.unict.it (Mario Pavone) Date: Tue, 15 Jan 2013 19:43:30 +0100 Subject: [ACT-R-users] CfP ECAL 2013 - European Conference on Artificial Life - 2-6 September, 2013 Taormina, Italy Message-ID: <20130115194330.Horde.azoebOph4B9Q9aNSsep2ajA@mbox.dmi.unict.it> [Apologies if you receive multiple copies of this announcement.] [Please kindly help forward it to potentially interested attendees.] ===================== First CALL FOR PAPERS: ECAL 2013 ECAL 2013, European Conference on Artificial Life, an International Conference on the Simulation and Synthesis of Living Systems 2-6 September 2013, Taormina, Italy http://www.dmi.unict.it/ecal2013/ ===================== Artificial Life is an interdisciplinary undertaking that investigates the fundamental properties of living systems through the simulation and synthesis of biological entities and processes. It also attempts to design and build artificial systems that display properties of organisms, or societies of organisms, out of abiotic or virtual parts. Researchers are invited to submit original work in the field of artificial life, synthetic biology, living systems, and complex systems as papers of not more than 8 pages. Papers must be submitted as PDF files. The authors' names shall not be blinded for the reviewing process. Papers must be submitted in MIT Press style through the conference homepage: https://www.easychair.org/conferences/?conf=ecal2013 ** You are invited to submit papers (full and abstract) to this exciting event! ** Important Dates Call for Workshop Submission: January 31, 2013 Workshop Acceptance: February 15, 2013 Call for Tutorial Submission: January 31, 2013 Tutorial Acceptance: February 15, 2013 Paper Submission: February 28, 2013 Author Notification: May 1, 2013 Camera Ready Paper Submission: June 1, 2013 Early registration: June 25, 2013 Late registration: June 26 - September 6, 2013 On-Site registration: September 2-6, 2013 Registration as Presenting Author: June 25, 2013 Conference: September 2-6, 2013 PAPER/ABSTRACT FORMAT --------------------- Detailed information concerning the formatting guidelines, templates, online submission process, and proceedings can be found at http://www.dmi.unict.it/ecal2013/callpapers.php There are two options for submission: either *full paper* or *abstract*. Note that the format is exactly the same for both options. The only difference resides in the number of pages and type of contents: 1. Full papers have an *8-page* maximum length and should report on new, unpublished work 2. Abstracts are limited to a *2-page* length and should discuss work previously published in a journal. It is therefore essential that a reference to the previous article is clearly cited in the abstract. All submissions will be subject to peer review, and all accepted submissions will be allocated either an oral presentation slot or a poster slot with no distinction being made between the two submission options (full paper or abstract). PUBLICATION --------------------- Every accepted full-paper and abstract, which was submitted to the main conference (not the satellite workshops), will be published by MIT Press in a single online open-access proceedings volume. The top 10 accepted publications will have the opportunity to publish a revised and expanded version of their conference paper in the Artificial Life journal (TBC). LOCATION --------------------- The conference will be held at the Taormina http://www.dmi.unict.it/ecal2013/location.php. We look forward to seeing you in Taormina! Best wishes, ?Pietro Lio', Orazio Miglino, Giuseppe Nicosia, Stefano Nolfi, and Mario Pavone - ECAL 2013 Chairs. -- Dr. Mario Pavone (PhD) Assistant Professor Department of Mathematics and Computer Science University of Catania V.le A. Doria 6 - 95125 Catania, Italy tel: 0039 095 7383038 fax: 0039 095 330094 Email: mpavone at dmi.unict.it http://www.dmi.unict.it/mpavone/ ------------------------------------------------ From varundutt at yahoo.com Tue Jan 15 23:23:00 2013 From: varundutt at yahoo.com (Varun Dutt) Date: Tue, 15 Jan 2013 20:23:00 -0800 (PST) Subject: [ACT-R-users] what does negative decay mean? In-Reply-To: <64368A2D531CFE4AAE1B46464451F8760A9AC1@PGH-MSGMB-03.andrew.ad.cmu.edu> Message-ID: <1358310180.35845.YahooMailClassic@web121106.mail.ne1.yahoo.com> Hi Coty, In ACT-R, a negative decay would imply a perfect memory (i.e., where the activation of instances increase over time). In my knowledge, there is only one paper that has found empirical (experimental) evidence of a negative decay value: http://act-r.psy.cmu.edu/papers/667/p1133.pdf? These authors tested it for an experiment involving arousal and recall. They found that a negative decay is better suited to ?model highly aroused individuals compared to low aroused individuals. Best,Varun--Varun Dutt, M.S., Ph.D.Co-advisor, International RelationsFaculty Advisor,Undergraduate studentsAssistant ProfessorSchool of Computing and Electrical EngineeringSchool of Humanities and Social SciencesIndian Institute of Technology Mandi, India --- On Tue, 15/1/13, Cleotilde Gonzalez wrote: From: Cleotilde Gonzalez Subject: [ACT-R-users] what does negative decay mean? To: "act-r-users at act-r.psy.cmu.edu" Date: Tuesday, 15 January, 2013, 19:35 ACT-R friends, ?? During explorations of the decay parameter in the ACT-R activation equation, we have wondered if any body has ever used a negative value or even zero, or even something different from the .5 default value.?? What would a negative value of decay mean? ?just curiosity, I don't think we are going to go that far :-) ? Coty -----Inline Attachment Follows----- _______________________________________________ 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 -------------- next part -------------- An HTML attachment was scrubbed... URL: From m.nijboer at rug.nl Wed Jan 16 08:35:30 2013 From: m.nijboer at rug.nl (M.Nijboer) Date: Wed, 16 Jan 2013 14:35:30 +0100 Subject: [ACT-R-users] BOLD predictions for our new fMRI experiment In-Reply-To: <7680962a49f012.50f6ac93@rug.nl> References: <75f0845b49f1bd.50f6ac1a@rug.nl> <7680a20549907f.50f6ac56@rug.nl> <7680962a49f012.50f6ac93@rug.nl> Message-ID: <76009a01498d76.50f6bab2@rug.nl> ?Hello all, We've just begun running a new fMRI experiment, and we've made some BOLD predictions for several ROIs using an ACT-R model we've created previously. Details can be found at www.nijboers.nl/multitask/boldprediction-jan2013.html(http://www.nijboers.nl/multitask/boldprediction-jan2013.html) Regards, Menno Nijboer University of Groningen -------------- next part -------------- An HTML attachment was scrubbed... URL: From Glenn.Gunzelmann at wpafb.af.mil Fri Jan 18 16:15:50 2013 From: Glenn.Gunzelmann at wpafb.af.mil (Gunzelmann, Glenn F Civ USAF AFMC 711 HPW/RHAC) Date: Fri, 18 Jan 2013 16:15:50 -0500 Subject: [ACT-R-users] Research Positions at the US Air Force Research Laboratory Message-ID: Apologies if you receive multiple copies. (Please note, individuals must be U.S. citizens or permanent legal residents of the United States to be eligible for these positions) The U.S. Air Force Research Laboratory's Cognitive Models and Agents Branch has a variety of research positions available for talented cognitive, computational, and computer scientists interested in working on basic and applied cognitive science research. Full-time, paid positions range from undergraduate and graduate-level internships and research assistantships, to post-doctoral research appointments, to visiting faculty appointments. Salaries are commensurate with experience. We conduct empirical, computational, and mathematical research in the cognitive sciences to develop valid models of the human mind. We are committed to scientific excellence and technological innovation to improve the operational efficiency and effectiveness of the people defending our nation. We hire motivated, skilled, productive people who share our passion for this mission. There are research efforts underway in a variety of basic and applied research areas. Brief descriptions of current projects are available here: http://palm.mindmodeling.org/palmListings/ Anyone interested in working with us on one or more of our ongoing research efforts is encouraged to contact the PI for that particular research area as soon as possible. Email addresses are available on the website. Best regards, -Glenn ____________________________________ Glenn Gunzelmann, Ph.D. Senior Research Psychologist S&T Advisor, Cognitive Models & Agents Branch 711 HPW/RHAC 2620 Q Street Bldg 852, Rm 3-312 Wright-Patterson AFB, OH 45433-7905 Phone: (937) 938-3554 Email: glenn.gunzelmann at wpafb.af.mil ____________________________________ -------------- next part -------------- An HTML attachment was scrubbed... URL: -------------- next part -------------- A non-text attachment was scrubbed... Name: smime.p7s Type: application/x-pkcs7-signature Size: 5692 bytes Desc: not available URL: From n.a.taatgen at rug.nl Tue Jan 22 04:22:19 2013 From: n.a.taatgen at rug.nl (Niels Taatgen) Date: Tue, 22 Jan 2013 10:22:19 +0100 Subject: [ACT-R-users] ACT-R Spring School announcement Message-ID: <7BB4272C-5F23-48DE-9F64-EF38E71A0076@rug.nl> Third ACT-R Spring School, Master Class and Workshop 2013 Organizers: Niels Taatgen, Hedderik van Rijn and Jelmer Borst University of Groningen, Netherlands http://www.ai.rug.nl/actr-springschool/ April 8-13, 2013 ACT-R is a cognitive theory and simulation system for developing cognitive models for tasks that vary from simple reaction time experiments to driving a car, learning algebra and air traffic control. Following previous ACT-R events in 2010 and 2011, the University of Groningen will again host a spring school and workshop. Spring School The spring school will take place from Monday April 8 to Thursday April 11. Participants will follow a compressed four-day version of the traditional summer school curriculum. The standard curriculum is structured as a set of six units, of which we will cover four in the course of the week. Each unit lasts a day and involves a morning theory lecture, an afternoon discussion session on advanced topics, and an assignment which participants are expected to complete during the day. Computing facilities will be provided or attendees can bring their own laptop on which the ACT-R software will be installed. To provide an optimal learning environment, admission is limited. Prospective participants should submit an application by February 17, consisting of a curriculum vitae and a statement of purpose. Demonstrated experience with a modeling formalism similar to ACT-R will strengthen the application, as well as general programming experience. Applicants will be notified of admission by February 24. Master Class: Work on your own project Organized parallel to the spring school, the master class offers the opportunity for modelers to work on their own projects with guidance from experienced ACT-R modelers. Note that signing up for the Master Class assumes some prior ACT-R experience, either through self-study, or having followed an earlier ACT-R spring or summer school. European ACT-R Workshop The European ACT-R workshop will take place from Friday April 12 to Saturday April 13. The workshop will feature invited lectures, research presentations, discussion sessions and instructional tutorials. Suggestions for the topics of the tutorials and discussion sessions are welcome. Admission to the workshop is open to all. Registrations fees and housing Spring School + Workshop: Euro 200 Master Class + Workshop: Euro 200 Workshop only: Euro 100 Late fee (registration after March 12): Euro 50 Housing will be offered in the university guesthouse for 61 Euro /day (single, double rooms are around Euro 78.50, Breakfast is 10 Euro/person). Registration To apply to the 2013 Spring School or Master Class, send an email to Hedderik van Rijn (hedderik at van-rijn.org) and attach the requested documents before February 17, 2013. If you would like to contribute to the workshop, please let us know as well. To register for the 2013 Workshop, also send an email to Hedderik van Rijn (hedderik at van-rijn.org). Please specify your contact details, and whether or not you would like to present your research. ================================================= Niels Taatgen - Professor University of Groningen, Artificial Intelligence web: http://www.ai.rug.nl/~niels email: n.a.taatgen at rug.nl Telephone: +31 50 3636435 Office: Bernouilliborg 322 ================================================= -------------- next part -------------- An HTML attachment was scrubbed... URL: From hedderik at van-rijn.org Mon Jan 28 09:28:01 2013 From: hedderik at van-rijn.org (Hedderik van Rijn) Date: Mon, 28 Jan 2013 15:28:01 +0100 Subject: [ACT-R-users] Looking for references to models/papers that use the Temporal Module Message-ID: <1AA3E052-8CEA-4655-BC35-754F18C8440C@van-rijn.org> Dear ACT-R modelers, in a couple of months, the new journal Timing and Time Processing (http://www.brill.com/time ) will celebrate the 50th anniversary of the information-processing account of interval timing with a special issue. Although the implementation of the temporal module is slightly different from the view that is proposed by the typical Scalar Timing Theory models (which is the currently preferred name for the general pacemaker-accumulator models), Niels and I are planning to write a review paper on the successes of the architecture-based approach to interval timing as presented in Taatgen, Van Rijn & Anderson (2007). So, we're looking for a list of *all* models that use the temporal module, or anything that is derived from that. Preferably, of course, models related to published papers, but we're also happy to hear about models that are still in the works. We're currently going through the 82 papers that cite the 2007 paper using Google Scholar, see: http://scholar.google.com/scholar?start=1&hl=en&as_sdt=2005&sciodt=0,5&cites=8560699462696291936&scipsc= Or see the just created Mendeley group: http://www.mendeley.com/groups/3010721/integrated-architecture-based-interval-timing/papers/ However, if you know of any other work that might be interesting for us to mention (and for you to get cited ;-)), please let us know! Also on behalf of Niels, - Hedderik.