Package ciir.umass.edu.learning

Class LinearRegRank

java.lang.Object

ciir.umass.edu.learning.Ranker

ciir.umass.edu.learning.LinearRegRank

public class LinearRegRank
extends Ranker

Field Summary

Fields

Modifier and Type	Field	Description
static double	lambda
protected double[]	weight

Fields inherited from class ciir.umass.edu.learning.Ranker

bestScoreOnValidationData, features, samples, scoreOnTrainingData, scorer, validationSamples, verbose

Constructor Summary

Constructors

Constructor	Description
LinearRegRank()
LinearRegRank(java.util.List<RankList> samples, int[] features, MetricScorer scorer)

Method Summary

Modifier and Type	Method	Description
Ranker	createNew()
double	eval(DataPoint p)
void	init()	HAVE TO BE OVER-RIDDEN IN SUB-CLASSES
void	learn()
void	loadFromString(java.lang.String fullText)
java.lang.String	model()
java.lang.String	name()
void	printParameters()
protected double[]	solve(double[][] A, double[] B)	Solve a system of linear equations Ax=B, in which A has to be a square matrix with the same length as B
java.lang.String	toString()

Methods inherited from class ciir.umass.edu.learning.Ranker

copy, getFeatures, getScoreOnTrainingData, getScoreOnValidationData, PRINT, PRINT, PRINT_MEMORY_USAGE, PRINTLN, PRINTLN, PRINTTIME, rank, rank, save, setFeatures, setMetricScorer, setTrainingSet, setValidationSet

Methods inherited from class java.lang.Object

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

Field Detail

lambda

public static double lambda

weight

protected double[] weight

Constructor Detail

LinearRegRank

public LinearRegRank()

LinearRegRank

public LinearRegRank(java.util.List<RankList> samples,
                     int[] features,
                     MetricScorer scorer)

Method Detail

init

public void init()

Description copied from class: Ranker

HAVE TO BE OVER-RIDDEN IN SUB-CLASSES

Specified by:

init in class Ranker

learn

public void learn()

Specified by:

learn in class Ranker

eval

public double eval(DataPoint p)

Overrides:

eval in class Ranker

createNew

public Ranker createNew()

Specified by:

createNew in class Ranker

toString

public java.lang.String toString()

Specified by:

toString in class Ranker

model

public java.lang.String model()

Specified by:

model in class Ranker

loadFromString

public void loadFromString(java.lang.String fullText)

Specified by:

loadFromString in class Ranker

printParameters

public void printParameters()

Specified by:

printParameters in class Ranker

name

public java.lang.String name()

Specified by:

name in class Ranker

solve

protected double[] solve(double[][] A,
                         double[] B)

Solve a system of linear equations Ax=B, in which A has to be a square matrix with the same length as B

Parameters:

A -

B -

Returns:

x