Marr's Levels of Analysis
from Marr's Vision, Figure 1-4.
Computational
What is the goal of the computation, why is it appropriate,
and what is the logic of the strategy by which it can be
carried out?
Representational
How can this computational theory be implemented? In particular,
what is the representation for the input and output, and what is
the algorithm for the transformation?
Implementational
How can the representation and algorithm be realized physically?
For another perspective on whether Chomsky fits into this construction
of the psychological reality of linguistic theories, see
The
Reality of Psychological Reality: Chomsky and Matthew's Chomsky by
Johathan Cohen, November 15, 1998.
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Comments to author: David Bozak
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Revised: January 29, 2001
URL: http://www.cs.oswego.edu/~dab/310/marr.html