Topic: Urn Models

Writing Play-the-Winner Updates as Transitions

Worked Multi-Category Generalized Urn

Worked Binary-Response Generalized Urn

Urn States and Treatment Allocation

When Replacement Rules Add and Remove Balls

The Two-Arm Randomized Play-the-Winner Rule

Unequal Reinforcement Across Treatments

The Friedman Urn Rule

State-Dependent Replacement Rules

Reading Replacement-Matrix Conventions