Fall 2004
Tuesdays
12:00 GWC 604
Seminar
Schedule:<http://math.la.asu.edu/~tom/cognition/math+cogsched.html>
On
Tuesday, November 16, at 12:00 Noon
in GWC 604, the Mathematics and Cognition Seminar will
present a discussion with Dr.Gregory Stone of the Department
of Psychology
on the topic of:
"Combining connectionist and sybolic properties in a
single system -- adaptive organization of information at different
scales"
| Abstract: In the debate over symbol systems and connectionist systems with distributed representations, both sides have presented compelling advantages of their own approach and disadvantages of the other approach. I will argue that the best of both approaches can be achieved using a connectionist system with distributed representations. The key is the use of recurrent feedback loops between layers and competitive cooperative interactions within layers. Besides solving the basic connectionist problem of selecting a single coherent output (a.k.a. eliminating cross-talk), the system has a property I call functional unitization, in which patterns behave as if they were discrete units with constituent structure. However, there is still a serious, unsolved problem with this system- representing serial order. I will propose a solution (as yet un-implemented) that uses coupled oscillator dynamics instead of fixed-point attractor dynamics. |