Probably Approximately Correct learning (PAC learning)

E345811

Probably Approximately Correct (PAC) learning is a foundational framework in computational learning theory that formalizes what it means for an algorithm to efficiently learn a concept from examples with high probability and small error.

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Predicate Object
instanceOf computational learning theory framework
learning theory model
theoretical framework in machine learning
appliesTo binary classification
multiclass classification
some regression settings
assumes access to labeled examples
i.i.d. examples from an unknown distribution
confidenceParameterSymbol delta
contrastsWith exact learning models
heuristic, non-probabilistic learning notions
coreConcept agnostic case
concept class
distribution over instances
generalization error
hypothesis class
learning algorithm
realizable case
sample complexity
target concept
definesProperty PAC learnability
efficient learnability
errorParameterSymbol epsilon
field computational learning theory
formalizes learning from examples
learning with high probability and small error
notion of efficient learnability
goal achieve confidence at least 1 - delta
find hypothesis with error at most epsilon
hasAbbreviation PAC learning
hasVariant PAC learning with noise
agnostic PAC learning
distribution-free PAC learning
distribution-specific PAC learning
influenced VC dimension theory
active learning frameworks
boosting algorithms
statistical learning theory
introducedBy Leslie Valiant
introducedIn "A Theory of the Learnable"
publicationYear 1984
publishedIn Communications of the ACM
relatedTo VC dimension
empirical risk minimization
uniform convergence
requires polynomial sample complexity in 1/epsilon, 1/delta, and size parameters
polynomial-time learning algorithm for efficient PAC learning
usedFor analyzing learnability of concept classes
characterizing when learning is computationally feasible
deriving bounds on sample complexity

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Referenced by (10)

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

Leslie Valiant knownFor Probably Approximately Correct learning (PAC learning)
Leslie Valiant notableWork “A Theory of the Learnable”
linked to: Probably Approximately Correct learning (PAC learning)
poverty of the stimulus argument relatesTo Gold’s theorem in language learnability
linked to: Probably Approximately Correct learning (PAC learning)
Leslie Valiant notableFor Probably Approximately Correct learning model
subject linked to: Valiant
linked to: Probably Approximately Correct learning (PAC learning)
Leslie Valiant notableWork "A Theory of the Learnable"
subject linked to: Valiant
linked to: Probably Approximately Correct learning (PAC learning)
Probably Approximately Correct learning introducedIn "A Theory of the Learnable"
linked to: Probably Approximately Correct learning (PAC learning)
Probably Approximately Correct learning hasVariant PAC learning with noise
linked to: Probably Approximately Correct learning (PAC learning)
Probably Approximately Correct mainSubject PAC learning
linked to: Probably Approximately Correct learning (PAC learning)
Probably Approximately Correct title Probably Approximately Correct
linked to: Probably Approximately Correct learning (PAC learning)
Probably Approximately Correct hasNotableConcept PAC learning framework
linked to: Probably Approximately Correct learning (PAC learning)