[ACT-R-users] what does negative decay mean?

[Gunzelmann, Glenn F Civ USAF AFMC 711 HPW/RHAC]

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 <coty at cmu.edu> 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 <mailto:ACT-R-users at act-r.psy.cmu.edu> 
http://act-r.psy.cmu.edu/mailman/listinfo/act-r-users
<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: <http://mailman.srv.cs.cmu.edu/pipermail/act-r-users/attachments/20130115/75b8c263/attachment.bin>