smile.data.formula

Class FactorInteraction

java.lang.Object

smile.data.formula.FactorInteraction

All Implemented Interfaces:

java.io.Serializable, Term

public class FactorInteraction
extends java.lang.Object
implements Term

The interaction of all the factors appearing in the term. The interaction of one factor with another is that each of its levels is tested in each level of the other factor. For example, in a test of influences on crop yield, a watering regime factor (W: wet and dry) is crossed with a sowing density factor (D: high and low) when the response to the wet regime is tested at both high and low sowing density, and so is the response to the dry regime. If each of the four combinations of levels has replicate observations, then a cross-factored analysis can test for an interaction between the two treatment factors in their effect on the response.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
FactorInteraction(java.lang.String... factors) Constructor.

Method Summary

Modifier and Type	Method and Description
java.util.List<Feature>	bind(StructType schema) Binds the term to a schema.
int	size() Returns the number of factors in the interaction.
java.lang.String	toString()
java.util.Set<java.lang.String>	variables() Returns the list of variables used in this term.

Methods inherited from class java.lang.Object

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

Methods inherited from interface smile.data.formula.Term

expand

Constructor Detail

FactorInteraction

public FactorInteraction(java.lang.String... factors)

Constructor.

Parameters:

factors - the factors of interaction.

Method Detail

size

public int size()

Returns the number of factors in the interaction.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

variables

public java.util.Set<java.lang.String> variables()

Description copied from interface: Term

Returns the list of variables used in this term.

Specified by:

variables in interface Term

bind

public java.util.List<Feature> bind(StructType schema)

Description copied from interface: Term

Binds the term to a schema.

Specified by:

bind in interface Term