Notre Dame Cognitive Science Group


Fall 1999


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Fall 1999 Topic:

What are (Good) Models in Cognitive Science?

Place/Time: we meet every Friday in LaFortune (Dooley Room) at 12:45 p.m. for about an hour to discuss topics of interest to people in cognitive science.  In particular, this semester we will have various short presentations of ND faculty from different departments on the issue of modeling.

If you are interested in cognitive science and want to contribute to our interdisciplinary project of bringing cognitive scientists together, feel free to join our newly formed cognitive science group!


Fall 1999 Schedule:

 Day   Presentation   Title/Abstract   Reading 
 09/17   Michael J. Wenger, Psychology  The editor's introduction to the chapter states (in part): "... Mark Steedman, a linguist and computer scientist, presents a case study of an algorithm for solving a problem of visual perception that has been important in the development of computer vision." Mark Steedman, "Cognitive algorithms: Questions of representation and computation in building a theory." from vol. 4 of Osherson's "Invitation to cognitive science"
 09/24  K.M. Eberhard, Psychology A dynamical systems approach to parsing is proposed in which syntactic hypotheses are associated with attractors in a metric space.  These attractors have many of the properties of traditional syntactic categories, while at the same time encoding context-dependent, lexically specific distinctions. Hypotheses motivated by the dynamical systems theory were tested in four reading-time experiments examining the interaction of simple lexical frequencies, frequencies that are contingent on an environment defined by syntactic categories, and frequencies  contingent on verb-argument structures.  The experiments documented a variety of contingent frequency effects that cut across traditional linguistic grains, each of which was predicted by the dynamical systems model. These effects were simulated in an implementation of the theory, employing a recirrent network trained from a corpus to construct metric representations and an algorithm implementing a gravitational dynamical system to model reading time as time to gravitate to an attractor. Tabor, W., Juliano, C., & Tanenhaus, M. K. (1997). Parsing in a dynamical
system:  An attractor-based account of the interaction of lexical and
structural constraints in sentence processing. Language and Cognitive
Processes, 12, 211-272
 10/01  K.M. Eberhard, Psychology  <continuation of 09/24>
 10/08  Ray Sepeta, CAP  Turing Machines
 10/15  <no meeting>
 10/22  <no meeting>
 10/29  OPEN
 11/05  Matthias Scheutz, Computer Science "Digital computers play a special role in cognitive science-they may actually be
instances of the phenomenon they are being used to model. This paper surveys some
of the main issues involved in understanding the relationship between digital
computers and cognition. It sketches the role of digital computers within orthodox
computational cognitive science, in the light of a recently emerging alternative
approach based around dynamical systems." (van Gelder)
 Tim van Gelder, "Computers and Computation in Cognitive Science"
 11/12
 11/19
 11/26


Fall 1999: Cognitive Science (Related) Courses


Fall 1999: Announcements (Talks, Conferences, etc.):

Colloquium on Friday, October 15th at 11:45 am in Room 100, Haggar Hall:
Dr. John Horn (USC): "Quintessential Expressions of Human Intelligence: Expertise?"

Dr. Horn has had a long and distinguished career studying the nature of age-related change in cognitive abilities.  Many of you may associate his name with "Fluid and Crystallized Intelligence".



More information to come soon!

Please send any questions regarding this page to
Matthias Scheutz

Last updated: 02/02/00