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Knowledge Representation
• Definition :It is internal representation of facts
• Various type of knowledge
Declarative Knowledge Procedural Knowledge Inheritable Knowledge Inferential Knowledge
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Declarative Knowledge
"lso known as #iple Relational knowledge
• $he way we represent ob%ect in a relationalknowledge!
• &aterial knowledge about a fact!
e!g!' Independence day of India is ()th "ugust* (+,-
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Procedural Knowledge
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"ll the rules ust be known
• .ses reasoning progra or procedure for internal representation!
• $he rules are used in a systeatic way through above
thus converging to the solution!
e!g! /btain the root'ean's0uare velocity fro the
set of nubers 1(* 12* 13* 1,* 44* 1n!
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Inferential Knowledge
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It is ost general for of knowledge that is e1plored
through predicate calculus or propositional logic!
• It ay include other fors e!g! Inheritable
knowledge is a special case of it!
• Inference can be ade fro either forwardor backward direction!
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Inheritable Knowledge
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$his is a special for of Inferential knowledge!
• .ses reasoning progra or procedure for internal
representation!
• .ses inferential ade0uacy i!e! ability to derive new knowledge structure fro e1isting!
• .ses inferential efficiency i!e! to incorporate additional
inforation to the e1isting knowledge structure for
converging towards ost proising solution!• It derive specific knowledge structure fro ore
5enerali6ed one!
e!g! which player has a1iu batting average 7
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&apping between facts 8 representations
• Knowledge level• #ybol level
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Representation of facts
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Knowledge Representation "pproaches
Representational "de0uacy
Inferential "de0uacy
Inferential 9fficiency
"c0usitional 9fficiency
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