magpie.attributes.selectors

Class BestIndividualSelector

java.lang.Object

magpie.attributes.selectors.BaseAttributeSelector

magpie.attributes.selectors.BestIndividualSelector

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, Commandable, Options, Printable

public class BestIndividualSelector
extends BaseAttributeSelector

Selects attributes based on their individual performance. User defines a BaseAttributeEvaluator to rank the power of each individual, and how many of the top attributes by that metric to select. As this class does not consider the collective predictive power of a set of attributes, it may select attributes that correlate with each other. It is recommended that you only used this to select a single attribute.

Usage: <number> <method> [<options...>]
number: Number of top-performing attributes to select
method: Name of a BaseAttributeEvaluator class used to rank attributes.
options...: Options for the attribute evaluator (unique to each method)

See Also:

BaseAttributeEvaluator, Serialized Form

Field Summary

Fields inherited from class magpie.attributes.selectors.BaseAttributeSelector

trained

Constructor Summary

Constructors

Constructor and Description
BestIndividualSelector()

Method Summary

Modifier and Type	Method and Description
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.
protected java.util.List<java.lang.Integer>	train_protected(Dataset Data) Operation that actually does the work for training.

Methods inherited from class magpie.attributes.selectors.BaseAttributeSelector

about, applyAttributeSelection, clone, getSelectionNames, getSelections, isTrained, printCommand, printDescription, printSelections, run, runCommand, train

Methods inherited from class java.lang.Object

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

Constructor Detail

BestIndividualSelector

public BestIndividualSelector()

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

train_protected

protected java.util.List<java.lang.Integer> train_protected(Dataset Data)

Description copied from class: BaseAttributeSelector

Operation that actually does the work for training. Must generate a list of attribute IDs

Specified by:

train_protected in class BaseAttributeSelector

Parameters:

Data - Dataset used to train selector

Returns:

List of indexes of selected attributes