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Procedural Representation Schemes (Advantages (simple syntax (English…
Procedural Representation Schemes
Production Systems
Basic Concepts
DENDRAL -1965
MYCIN -1970s
Rules Notation
AND/OR Graph
The Reasoning Process
Forward reasoning
Backward reasoning
Hybrid
Advantages
simple syntax (English like)
easy to understand and implement
highly modular (rules are independent of
each other)
easy to add or delete a rule => large rule
based systems can be built
Limitations
not all knowledge can be expressed in terms of rules
difficult to test exhaustively all the rules in the system
pattern matching involved is an inherently inefficient
computational process
can be inefficient for large systems