complete class theorem in decision theory

E212554

The complete class theorem in decision theory is a foundational result that characterizes optimal decision rules by showing that any admissible rule belongs to a "complete class" beyond which no better procedures exist.

All labels observed (2)

How this entity was disambiguated

Statements (47)

Predicate Object
instanceOf result in statistical decision theory ⓘ
theorem in decision theory ⓘ
appliesTo estimation problems ⓘ
general statistical decision problems ⓘ
hypothesis testing problems ⓘ
associatedWith Abraham Wald ⓘ
statistical decision theory of Wald ⓘ
characterizes Bayes rules as forming a complete class under regularity conditions ⓘ
clarifies relationship between admissible and Bayes decision rules ⓘ
concerns admissible decision rules ⓘ
complete classes of decision rules ⓘ
domination of decision rules ⓘ
loss functions ⓘ
optimal decision rules ⓘ
risk functions ⓘ
field Bayesian decision theory ⓘ
linked to: Bayes rules

decision theory ⓘ
mathematical statistics ⓘ
statistical decision theory ⓘ
hasConsequence Bayes procedures are often sufficient for optimality analysis ⓘ
inadmissible rules can be discarded without loss of optimality ⓘ
search for optimal rules can be restricted to a complete class ⓘ
hasFormulationCondition regularity conditions on loss and risk functions ⓘ
topological conditions on parameter and action spaces ⓘ
historicalContext developed in the mid-20th century ⓘ
implies admissible rules form a complete class under suitable conditions ⓘ
isRelatedTo Bayes optimality ⓘ
Wald’s decision theory ⓘ
admissibility theorem ⓘ
minimax theorem in decision theory ⓘ
mathematicalNature non-constructive existence result ⓘ
relatesTo Bayes rules ⓘ
dominated decision rules ⓘ
generalized Bayes rules ⓘ
minimax decision rules ⓘ
requires comparison of risk functions across all parameter values ⓘ
roleInPractice guides restriction of attention to admissible or Bayes rules ⓘ
roleInTheory foundational result in decision theory ⓘ
states every admissible decision rule belongs to some complete class ⓘ
no decision rule outside a complete class is better in terms of risk for all parameter values ⓘ
usesConcept action space ⓘ
admissibility ⓘ
complete class ⓘ
decision rule ⓘ
parameter space ⓘ
prior distribution ⓘ
risk domination ⓘ

How these facts were elicited

Referenced by (2)

Full triples — surface form annotated when it differs from this entity's canonical label.

Abraham Wald → developedConcept → complete class theorem in decision theory ⓘ
admissibility theorem → relatedTo → complete class theorem ⓘ
linked to: complete class theorem in decision theory