[ACT-R-users] Extending chunk types

[Chris Sims]

The dynamic pattern matching functionality in ACT-R 6 allows one to  
dynamically extend the chunk-type of chunks currently stored in the  
buffers, for example:

(P* sample-production
    =goal>
       ISA goal-chunk
       state =state-name
    ==>
    =goal>
       =state-name 42)

What I am wondering is:  Is there a way to achieve the same thing  
(dynamically extending a chunk type) when *creating* chunks on the  
right hand side of a production? For example:

(P* sample-production-2
    =goal>
       ISA goal-chunk
       state =state-name
    ==>
    +other-module>
       ISA other-chunk-type
       =state-name 42)

If I try and run a model containing a production like the above, I  
get the error:
#|Warning: Invalid slot-name [_____] in call to define-chunk-spec. |#

Is there a way to allow this in ACT-R 6?

Thanks,
-Chris Sims

-- 
Chris R. Sims
Doctoral Student, Department of Cognitive Science
Rensselaer Polytechnic Institute
Troy, NY 12180

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