[ACT-R-users] ACT-R-users Digest, Vol 45, Issue 2

[William G Kennedy]

Dan,

Memorable data to release a new version.  I hope all¹s well with you and
the program.

I will be teaching an cognitive modeling with ACT-R course next spring.
May I request the tutorial answer file. (no immediate rush.)  I¹m familiar
with the restrictions on letting it leak out.

Thanks and have a wonderful break!

//
Bill

On 12/21/16, 12:00 PM, "ACT-R-users on behalf of
act-r-users-request at actr-server.hpc1.cs.cmu.edu"
<act-r-users-bounces at actr-server.hpc1.cs.cmu.edu on behalf of
act-r-users-request at actr-server.hpc1.cs.cmu.edu> wrote:

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>Today's Topics:
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>   1. New ACT-R software release available (db30 at andrew.cmu.edu)
>
>
>----------------------------------------------------------------------
>
>Message: 1
>Date: Wed, 21 Dec 2016 10:18:55 -0500
>From: db30 at andrew.cmu.edu
>To: act-r-users at ACTR-SERVER.HPC1.CS.cmu.edu
>Subject: [ACT-R-users] New ACT-R software release available
>Message-ID: <451C49CDDB5DF6374FC2A287 at actr6b.psy.cmu.edu>
>Content-Type: text/plain; charset=us-ascii; FORMAT=flowed
>
>
>A new version of the ACT-R 7 software is now available from the
>ACT-R website: <http://act-r.psy.cmu.edu/software/>.  The current
>version is now 7.3-<2102:2016-12-20>.
>
>A few of the notable changes are listed below.  More details
>can be found in the commit log found on the ACT-R website at:
><http://act-r.psy.cmu.edu/log/actr6log.txt>, but only the changes
>in the actr7 branch are relevant to the current software.
>
>Production compilation has been updated to better handle buffers
>which are strict harvested.  It is now safer because it will not
>compose productions which have a stuffed chunk between them for
>goal and imaginal type buffers in cases where strict harvesting
>was the reason the buffer cleared in the first production.  It
>also produces better composed productions in situations were
>strict harvesting clears the buffer and the second production
>tests that it is empty.  Previously the 'buffer empty' query from
>the second production was added to the composed production, but
>that prevents the composed production from competing with the
>first parent.  Now that query is dropped from the new production.
>
>The mod-focus command now makes the modification during the
>goal-modification event instead of directly.  This allows one to use
>goal-focus followed by a mod-focus without it complaining that the
>buffer is empty.
>
>Added an extra which implements a modification to the activation
>calculation for declarative memory.  The purpose of the modifiction
>is to decrease the effect of noise on the activation of chunks as
>their activation increases with practice.  The extras/adaptive-noise
>directory contains the code which adds a parameter called :uan
>(use adaptive-noise) that can be set to t to enable the mechanism.
>The documentation included with the extra describes how it works,
>and there are some sample graphs of the results of some very simple
>test cases showing the change when :uan is enabled.
>
>
>If you have any questions or problems with the new version please let
>me know.
>
>Dan
>
>
>------------------------------
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>------------------------------
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>End of ACT-R-users Digest, Vol 45, Issue 2
>******************************************