smile.base.cart

Class NominalNode

java.lang.Object

smile.base.cart.InternalNode

smile.base.cart.NominalNode

All Implemented Interfaces:

java.io.Serializable, Node

public class NominalNode
extends InternalNode

A node with a nominal split variable.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NominalNode(int feature, int value, double splitScore, double deviance, Node trueChild, Node falseChild) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	branch(smile.data.Tuple x) Returns true if the instance goes to the true branch.
java.lang.String	dot(smile.data.type.StructType schema, smile.data.type.StructField response, int id) Returns a dot representation for visualization.
LeafNode	predict(smile.data.Tuple x) Evaluates the tree over an instance.
NominalNode	replace(Node trueChild, Node falseChild) Returns a new internal node with children replaced.
java.lang.String	toString(smile.data.type.StructType schema, boolean trueBranch) Returns the string representation of branch.

Methods inherited from class smile.base.cart.InternalNode

depth, deviance, falseChild, feature, leafs, merge, score, size, toString, trueChild

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NominalNode

public NominalNode(int feature,
                   int value,
                   double splitScore,
                   double deviance,
                   Node trueChild,
                   Node falseChild)

Constructor.

Method Detail

predict

public LeafNode predict(smile.data.Tuple x)

Description copied from class: InternalNode

Evaluates the tree over an instance.

Specified by:

predict in interface Node

Specified by:

predict in class InternalNode

branch

public boolean branch(smile.data.Tuple x)

Description copied from class: InternalNode

Returns true if the instance goes to the true branch.

Specified by:

branch in class InternalNode

replace

public NominalNode replace(Node trueChild,
                           Node falseChild)

Description copied from class: InternalNode

Returns a new internal node with children replaced.

Specified by:

replace in class InternalNode

dot

public java.lang.String dot(smile.data.type.StructType schema,
                            smile.data.type.StructField response,
                            int id)

Description copied from interface: Node

Returns a dot representation for visualization.

Parameters:

schema - the schema of data

response - the schema of response variable

id - node id

toString

public java.lang.String toString(smile.data.type.StructType schema,
                                 boolean trueBranch)

Description copied from class: InternalNode

Returns the string representation of branch.

Specified by:

toString in class InternalNode

Parameters:

schema - the schema of data.

trueBranch - for true or false branch.