magpie.attributes.evaluators

Class PolynomialFitEvaluator

java.lang.Object

magpie.attributes.evaluators.BaseAttributeEvaluator

magpie.attributes.evaluators.PolynomialFitEvaluator

All Implemented Interfaces:

Options

public class PolynomialFitEvaluator
extends BaseAttributeEvaluator

Evaluate an attribute based on the RMSE of polynomial model using that attribute. This is exactly the method used by Meredig and Wolverton (2014) in their Clustering-Ranking-Modeling method.

Usage: <order>
order: Order of polynomial fit to data when evaluating attributes

Field Summary

Fields

Modifier and Type	Field and Description
protected int	order Order of polynomial used to evaluate attributes

Constructor Summary

Constructors

Constructor and Description
PolynomialFitEvaluator()

Method Summary

Modifier and Type	Method and Description
protected java.util.Comparator<java.lang.Double>	compare() Create a comparator that will sort entries from the best to worst
protected double[]	evaluateAttributes_internal(Dataset Data) Operation that actually performs the work of evaluating attributes.
java.lang.String	printUsage() Print out required format for options.
void	setOptions(java.util.List<java.lang.Object> OptionsObj) Set any options for this object.

Methods inherited from class magpie.attributes.evaluators.BaseAttributeEvaluator

evaluateAttributes, getAttributeRanks, printRankings

Methods inherited from class java.lang.Object

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

Field Detail

order

protected int order

Order of polynomial used to evaluate attributes

Constructor Detail

PolynomialFitEvaluator

public PolynomialFitEvaluator()

Method Detail

setOptions

public void setOptions(java.util.List<java.lang.Object> OptionsObj)
                throws java.lang.Exception

Description copied from interface: Options

Set any options for this object. If parsing the options fails, return an Exception with the usage as its message.

Parameters:

OptionsObj - Array of options as Objects - can be null

Throws:

java.lang.Exception - if problem with inputs

printUsage

public java.lang.String printUsage()

Description copied from interface: Options

Print out required format for options. For consistency, should start with "Usage: ".

Returns:

Usage for this function

compare

protected java.util.Comparator<java.lang.Double> compare()

Description copied from class: BaseAttributeEvaluator

Create a comparator that will sort entries from the best to worst

Specified by:

compare in class BaseAttributeEvaluator

Returns:

Whether the predictive power of an attribute increases with increasing parameter

evaluateAttributes_internal

protected double[] evaluateAttributes_internal(Dataset Data)

Description copied from class: BaseAttributeEvaluator

Operation that actually performs the work of evaluating attributes.

Specified by:

evaluateAttributes_internal in class BaseAttributeEvaluator

Parameters:

Data - Dataset used to evaluate attributes

Returns:

Predictive power of each attribute.