org.openimaj.ml.linear.learner.perceptron

Class SimplePerceptron

java.lang.Object

org.openimaj.ml.linear.learner.perceptron.SimplePerceptron

All Implemented Interfaces:

Cloneable, org.openimaj.math.model.EstimatableModel<double[],Integer>, org.openimaj.math.model.Model<double[],Integer>, OnlineLearner<double[],Integer>

public class SimplePerceptron
extends Object
implements OnlineLearner<double[],Integer>, org.openimaj.math.model.EstimatableModel<double[],Integer>

Author:

Sina Samangooei (ss@ecs.soton.ac.uk)

Constructor Summary

Constructors

Constructor and Description
SimplePerceptron()

Method Summary

Modifier and Type	Method and Description
protected double	calculateError(List<? extends org.openimaj.util.pair.IndependentPair<double[],Integer>> pts)
SimplePerceptron	clone()
double[]	computeHyperplanePoint(double[] x) Compute NaN-coordinate of a point on the hyperplane given non-NaN-coordinates.
boolean	estimate(List<? extends org.openimaj.util.pair.IndependentPair<double[],Integer>> data)
double[]	getWeights()
int	numItemsToEstimate()
Integer	predict(double[] x)
void	process(double[] pt, Integer clazz)

Methods inherited from class java.lang.Object

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

Constructor Detail

SimplePerceptron

public SimplePerceptron()

Method Detail

process

public void process(double[] pt,
                    Integer clazz)

Specified by:

process in interface OnlineLearner<double[],Integer>

predict

public Integer predict(double[] x)

Specified by:

predict in interface org.openimaj.math.model.Model<double[],Integer>

Specified by:

predict in interface OnlineLearner<double[],Integer>

estimate

public boolean estimate(List<? extends org.openimaj.util.pair.IndependentPair<double[],Integer>> data)

Specified by:

estimate in interface org.openimaj.math.model.EstimatableModel<double[],Integer>

numItemsToEstimate

public int numItemsToEstimate()

Specified by:

numItemsToEstimate in interface org.openimaj.math.model.EstimatableModel<double[],Integer>

calculateError

protected double calculateError(List<? extends org.openimaj.util.pair.IndependentPair<double[],Integer>> pts)

computeHyperplanePoint

public double[] computeHyperplanePoint(double[] x)

Compute NaN-coordinate of a point on the hyperplane given non-NaN-coordinates. Only one x coordinate may be nan. If more NaN are seen after the first they are assumed to be 0

Parameters:

x - the coordinates, only one may be NaN, all others must be provided

Returns:

the y-ordinate

clone

public SimplePerceptron clone()

Specified by:

clone in interface org.openimaj.math.model.EstimatableModel<double[],Integer>

Overrides:

clone in class Object

getWeights

public double[] getWeights()