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Reference.org
Combs method
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<p>The Combs method is a rule base reduction method of writing <a href="/facts/Fuzzy_logic/1PvN4Att">fuzzy logic</a> rules described by William E. Combs in 1997. It is designed to prevent <a href="/facts/Combinatorial_explosion/TN8pUrtI">combinatorial explosion</a> in fuzzy logic rules. </p><p>The Combs method takes advantage of the <a href="/facts/Propositional_logic/MNt5v31V">logical</a> equality ( ( p ∧ q ) ⇒ r ) ⟺ ( ( p ⇒ r ) ∨ ( q ⇒ r ) ) {\displaystyle ((p\land q)\Rightarrow r)\iff ((p\Rightarrow r)\lor (q\Rightarrow r))} . </p>