Explain: Issues in knowledge representation.

Granularity:

• It represents at what level should the knowledge be represented, and what are the primitives.
• Ex.: If Tom feeds a dog, then it could become: feeds (tom, dog)
• If Tom gives the dog a bone: gives (tom, dog, bone)
• Are these the same?

Important attributes:

• There can be attributes that occur in many different types of problems with different names.
• For ex.: instance and isa. Each is important, because each supports property inheritance.

Relationships:

• Relationships such as inverses, existence, etc. among various attributes of an object need to be representedd without any ambiguity.
• Ex. of an inverse relationship: band(John,NYC)

• This can be interpreted as John plays in the band named NYC, or that John’s band is NYC.
• Another representation is band=NYC.