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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

subhragupta@rediffail!co

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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


"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


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


$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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