Introduction and d-separation

Thomas Richardson

UW Department of Statistics

Causal and Bayesian Networks

The Expert

Rule-Based Expert Systems

Rule-Based Expert Systems

Normative Expert Systems

Computational Difficulties

Bayesian Networks

Operational Expert Systems

Common Sense Reasoning About Uncertainty

Icy Roads

Causal Relationships

Watson has crashed!

But the Roads are Salted!

Wet Grass

The State of the ‘Turf’

Holmes’ Grass is Wet

Watson’s Grass is also Wet

The Burglar Alarm

Burglary and Earthquake

Burglary and Earthquake

Burglary and Earthquake

Relation between dependence and evidence

Graph Theoretic Concepts:

Parent, Child, Ancestor and Descendant

Definition: d-connecting path

PP Presentation

Holmes and Watson

The State of the ‘Turf’

Burglary and Earthquake

Common Misconception about d-connection

Properties of d-connection

Local Markov Property

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