AssociationRule<T> class

Represents an association rule: antecedent => consequent.

An association rule suggests a relationship between two sets of items. For example, {bread, butter} => {milk} implies that customers who buy bread and butter are also likely to buy milk.

Constructors

AssociationRule({required Set<T> antecedent, required Set<T> consequent, required double support, required double confidence, required double lift, required double leverage, required double conviction})

Creates a new AssociationRule.

Properties

antecedent → Set<T>

The antecedent (left-hand side) of the rule.

final

confidence → double

The confidence of the rule.

final

consequent → Set<T>

The consequent (right-hand side) of the rule.

final

conviction → double

The conviction of the rule.

final

hashCode → int

The hash code for this object.

no setter, override

itemset → Set<T>

Returns the full itemset (antecedent and consequent combined).

no setter

leverage → double

The leverage of the rule.

final

lift → double

The lift of the rule.

final

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

support → double

The support of the full itemset (antecedent ∪ consequent).

final

Methods

formatWithMetrics() → String

Formats the rule with its key metrics for easy interpretation.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

toString() → String

A string representation of this object.

override

Operators

operator ==(Object other) → bool

The equality operator.

override

Static Methods

compareByConfidence<T>(AssociationRule<T> a, AssociationRule<T> b) → int

Compares rules by confidence (descending order).

compareByLift<T>(AssociationRule<T> a, AssociationRule<T> b) → int

Compares rules by lift (descending order).

compareBySupport<T>(AssociationRule<T> a, AssociationRule<T> b) → int

Compares rules by support (descending order).