Transcript slides

What does ACT-R
have to do to be Practical?
John R. Anderson
Psychology Department
Carnegie Mellon University
Pittsburgh, PA 15213
[email protected]
ACT-R Home Page:
http://act.psy.cmu.edu
Characteristics of Naturalistic
Decision Settings
(Orasanu & Connolly, 1993)
1. Ill-structured
2. Uncertain dynamic environments
3. Shifting, ill-defined or competing goals
4. Action/feedback loops
5. Time stress
6. High stakes
7. Multiple players
8. Organizational goals and norms.
Detail and Knowledge: Friends or Foes?
1. Newell's Rational Level versus Cognitive Level
2. The TacAir-Soar Experience
-- abandon learning
-- much more than 10 man years of development
-- abandon concern with behavioral detail.
“From earlier experience in cognitive modeling, we know that attempting
to model human behavior to the greatest degree possible would greatly
slow development and increase the required computational resources.”
(Jones, Laird, Nielsen, Coutler, Kenny, & Koss, (1999). p. 33.)
3. The Cognitive Tutor Experience
-- abandon learning
-- much more than 10 man years of development
-- abandon concern with behavioral detail.
4. Christian Lebiere's Position
-- it is precisely the abandoning of learning and
the cognitive level creates these systems which
will never have the richness of knowledge
-- sweat the details now and reap the rewards later.