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<TITLE>Production satiation (UNCLASSIFIED)</TITLE>
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<P><FONT SIZE=2 FACE="Arial">Classification: <U><B> UNCLASSIFIED</B></U><B></B> </FONT>
<BR><FONT SIZE=2 FACE="Arial">Caveats: NONE</FONT>
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<BR><FONT SIZE=2 FACE="Arial">ACT-R users,</FONT>
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<P><FONT SIZE=2 FACE="Arial">I was wondering, and I have never heard of this, if there a concept of production satiation in ACT-R, or someway to implement such a concept? This seems to be a common problem in ACT-R where a production will continue to fire over and over and it is difficult to stop. I understand that the solution is to change the activation of a chunk so that something else will match, but this is difficult to accomplish when the matching chunk keeps increasing in activation, thus causing more matches. I remember a few ACT-R workshops back that someone, I think Richard Young, presented the idea of a production refractory period, and I was wondering if this idea has ever gained any ground? Or are there other ideas of satiation within ACT-R? I am asking this because we are having trouble with our robot performing the same productions over and over. Again, I understand that we need to activate other chunks to cause a different match, but the question is - Where does this increased activation come from? Is this a meta-cognitive function? If there are no “new” stimuli from the outside, what triggers an increase in activation?</FONT></P>
<P><FONT SIZE=2 FACE="Arial">Troy D. Kelley</FONT>
<BR><FONT SIZE=2 FACE="Arial">US Army Research Laboratory</FONT>
<BR><FONT SIZE=2 FACE="Arial">Human Research and Engineering Directorate</FONT>
<BR><FONT SIZE=2 FACE="Arial">AMSRD-ARL-HR-SE</FONT>
<BR><FONT SIZE=2 FACE="Arial">Aberdeen, MD, 21005-5425</FONT>
<BR><FONT SIZE=2 FACE="Arial">Ph: 410-278-5869</FONT>
<BR><FONT SIZE=2 FACE="Arial">FAX: 410-278-9523</FONT>
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<BR><FONT SIZE=2 FACE="Arial">Classification: </FONT><U></U><U><B> <FONT SIZE=2 FACE="Arial">UNCLASSIFIED</FONT></B></U><B></B>
<BR><FONT SIZE=2 FACE="Arial">Caveats: NONE</FONT>
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