KBAI 笔记 11 Classification

Preview

Exercise: Concept Learning Revisited

quize

• Concepts have hierarchy

Classifying Birds

features used to classify birthdays

• many feature can be used for classification
• classification is important.

The Challenge of Classification

cognitive system

Cognitive systems

Assume both features (percept) and actions are binary, then the input output combination will be a large number. so that the mapping is complex, large, and hard to handle

Equivalence Classes

Percepts -> Concepts -> actions

with Classification, we can index action based on concepts of percepts and reduce the number of combination of percept-action mapping.

Exercise: Equivalence Classes

Concept Hierarchies

Hierachies

• establish and refine

Exercise: Concept Hierarchies

• From classes to super classes: survey all the classes, extract common features into super class.

Types of Concepts

Axiomatic Concepts

Prototype Concepts

Prototype Concepts

• property overside could change one concept to another (specification).

Exemplar Concepts

Order of Concepts

Exercise: Order of Concepts

ranking concipts

Bottom-Up Search

Identify a abstract

assignment

recap

The Cognitive Connection

Classification allows us to select actions.