reference

[Gary Cottrell]

A number of people have asked me where the work was
of Jeff Elman's that I was referring to. Here it is:

Representation and Structure in Connectionist models
CRL TR 8903, 
available from
Center for Research in Language
C-008
UCSD
La Jolla, Ca 92093


The grammar is:
S -> NP VP "."
NP -> PropN | N | N RC
VP -> V (NP)
RC -> who NP VP | who VP (NP)
N -> boy, girl cat dog boys girls cats dogs
PropN -> John, Mary
V -> chase, chases, 9 others

Also number agreement is enforced and there are transitivity 
requirements.

The success criterion is that the network successfully predict
the possible classes of the next word. Thus it has to remember
number agreement between the subj and the verb across embedded 
clauses, and only predict verbs of the proper number.

gary