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Turnbull China Bikeride
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Turnbull China Bikeride - Disc 2.iso
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README
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1995-02-14
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This is a minimal expert system, intended as a vehicle for discussing the
unification and inference algorithms, and as an example of using functional
programming for artificial intelligence applications.
One particularly interesting feature is the use of the request/response
stream and lazy table techniques to allow the inference algorithm to ask
questions and get answers from the user while in the middle of a search.
Of course, compared to the use of logic programming for such a task, the
algorithms have to be much more explicit and the program will run much
slower, because unification and inference aren't built-in (although they
could be). On the other hand, the program is purely declarative, whereas
expert system programs written in logic programming languages are usually
very far from declarative (and very far from being understandable or
provable).
The program was translated and adapted from the version in:
Functional programming with Miranda
Ian Holyer, Pitman 1991
It can be interpreted with gofer (using project file `expert.prj') or it
can be compiled with gofer, hbc or ghc (using `Makefile').
Ian Holyer
March 1993