Uses of Interface
org.apache.ignite.ml.tree.impurity.ImpurityMeasure

Packages that use ImpurityMeasure

Package	Description
org.apache.ignite.ml.tree	Root package for decision trees.
org.apache.ignite.ml.tree.impurity	Root package for decision tree impurity measures and calculators.
org.apache.ignite.ml.tree.impurity.gini	Contains Gini impurity measure and calculator.
org.apache.ignite.ml.tree.impurity.mse	Contains mean squared error impurity measure and calculator.
org.apache.ignite.ml.tree.impurity.util	Contains util classes used in decision tree impurity calculators.

Uses of ImpurityMeasure in org.apache.ignite.ml.tree

Classes in org.apache.ignite.ml.tree with type parameters of type ImpurityMeasure

Modifier and Type	Class and Description
class	DecisionTree<T extends ImpurityMeasure<T>> Distributed decision tree trainer that allows to fit trees using row-partitioned dataset.

Uses of ImpurityMeasure in org.apache.ignite.ml.tree.impurity

Classes in org.apache.ignite.ml.tree.impurity with type parameters of type ImpurityMeasure

Modifier and Type	Interface and Description
interface	ImpurityMeasure<T extends ImpurityMeasure<T>> Base interface for impurity measures that can be used in distributed decision tree algorithm.
class	ImpurityMeasureCalculator<T extends ImpurityMeasure<T>> Base interface for impurity measure calculators that calculates all impurity measures required to find a best split.

Uses of ImpurityMeasure in org.apache.ignite.ml.tree.impurity.gini

Classes in org.apache.ignite.ml.tree.impurity.gini that implement ImpurityMeasure

Modifier and Type	Class and Description
class	GiniImpurityMeasure Gini impurity measure which is calculated the following way: \-frac{1}{L}\sum_{i=1}^{s}l_i^2 - \frac{1}{R}\sum_{i=s+1}^{n}r_i^2.

Uses of ImpurityMeasure in org.apache.ignite.ml.tree.impurity.mse

Classes in org.apache.ignite.ml.tree.impurity.mse that implement ImpurityMeasure

Modifier and Type	Class and Description
class	MSEImpurityMeasure Mean squared error (variance) impurity measure which is calculated the following way: \frac{1}{L}\sum_{i=0}^{n}(y_i - \mu)^2.

Uses of ImpurityMeasure in org.apache.ignite.ml.tree.impurity.util

Classes in org.apache.ignite.ml.tree.impurity.util with type parameters of type ImpurityMeasure

Modifier and Type	Class and Description
class	SimpleStepFunctionCompressor<T extends ImpurityMeasure<T>> Simple step function compressor.
class	StepFunction<T extends ImpurityMeasure<T>> Step function described by x and y points.
interface	StepFunctionCompressor<T extends ImpurityMeasure<T>> Base interface for step function compressors which reduces step function size.

Methods in org.apache.ignite.ml.tree.impurity.util that return ImpurityMeasure

Modifier and Type	Method and Description
T[]	StepFunction.getY()

Constructors in org.apache.ignite.ml.tree.impurity.util with parameters of type ImpurityMeasure

Constructor and Description
StepFunction(double[] x, T[] y) Constructs a new instance of step function.