THE UNIVERSITY OF SUSSEX CG019

BA & LLB FIRST YEAR EXAMINATION 2000

COGNITIVE MODELLING

Saturday 17 June 2000 2.00pm - 3.30pm

Candidates must attempt TWO questions

1. Using a language understanding program that you have studied as an example:
   1. Explain with examples the stages the program goes through in interpreting a command for a simulated robot to carry out.
   2. Describe three sorts of barriers that may prevent the system from understanding or executing a command.
   3. Briefly discuss the strengths and weaknesses of the program as a model of human language understanding and performance.

2. Using a Production System model of subtraction that you have studied as an example:
   1. Explain with examples how the system models both correct and incorrect subtraction behaviour.
   2. Explain with an example what is meant by `Conflict Resolution'.
   3. Briefly discuss the strengths and weaknesses of the program as a model of human subtraction understanding and performance.

3. Compare and contrast Symbolic Models, Connectionist Models and Cognitive Architectures as explanatory tools in cognitive science.