Abstract
We build on our previous feasibility studies 16, 17,
which demonstrated the impact of evaluation during
development in the DEVTAG system, and here present a
full-fledged developmental system DTAG3P, with
developmental evaluation, based on Tree-Adjoining
Grammars (TAG). While DEVTAG used only a trivial
developmental process, DTAG3P uses L-systems to encode
TAG derivation trees, the L-systems permitting a full
developmental process. DEVTAG was previously shown to
dramatically out-perform standard Genetic Programming
(GP) on some structured families of problems; here, we
examine DTAG3P's performance on one of these families,
and find a further major increment in performance over
DEVTAG. DTAG3P achieves this despite dispensing with
two extra control parameters which it was necessary to
introduce into DEVTAG.
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