[ACT-R-users] Comparing chunk types

[Jerry.Ball at williams.af.mil]

Conjunctions in English can conjoin almost any linguistic type, but both
conjuncts must (almost always) be of the same type. I need to be able to
compare the chunk before the conjunction to the chunk after the conjunction
to see if they are the same chunk type (e.g. noun, verb, NP, PP, etc.) and
can be combined. The production that does this doesn't need to know what the
chunk types are, just that they are the same type. Is there a mechanism in
ACT-R for comparing chunk types (similar to the mechanism for comparing slot
values)? If not, would such a mechanism fit in with the current
architecture? Currently, I have separate productions for conjoining each
linguistic type, but I would like very much to generalize these productions.

Jerry Ball