Production system




A production system consists of a collection of productions (rules), a working memory of facts and an algorithm known as forward chaining for producing new facts from old. A rule becomes eligible to "fire" when its conditions match some set of elements currently in working memory.

A conflict resolution strategy determines which of several eligible rules (the conflict set) fires next.

A condition is a list of symbols which represent constants, which must be matched exactly; variables which bind to the thing they match and "<> symbol" which matches a field not equal to symbol.

Examples are OPS5, CLIPS, flex.





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Procomm
Procrustean string
Prodigy
ProDoc
product
CLIPS
declarative language
Edison
forward chaining
Lex
Professional Graphics Adapter
Professional Office System
professional programming
professional services
PROFILE