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Chapter: Artificial Intelligence

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Syntax and semantics for Knowledge Representation

Knowledge representation languages should have precise syntax and semantics.

Syntax and semantics for Knowledge Representation

 

Knowledge representation languages should have precise syntax and semantics. You must know exactly what an expression means in terms of objects in the real world. Suppose we have decided that “red 1” refers to a dark red colour, “car1” is my car, car2 is another. Syntax of language will tell you which of the following is legal: red1 (car1), red1 car1, car1 (red1), red1 (car1 & car2)?

 

Semantics of language tell you exactly what an expression means: for example, Pred (Arg) means that the property referred to by Pred applies to the object referred to by Arg. E.g., properly “dark red” appli es to my car.




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