# Prototype Theory It introduces the notion of _graded semantics categories_. There are no clear boundaries. There is no requirement that a property or set of properties be shared by all members. Certain members of a category are more central, or _prototypical_, for example Furniture: chair is more prototypical than stool. - Categories form around prototypes; new members added on basis of resemblance to prototype - Features/attributes generally graded - Category membership a matter of degree - Categories do not have clear boundaries --- ## References 1. Chapter 19, Jurafsky and Martin, 2019