databionics.esom.grid
Class MatrixGrid

java.lang.Object
  databionics.esom.grid.Grid
      databionics.esom.grid.MatrixGrid

Direct Known Subclasses:

CircularGrid1D, Grid1D, RectangularGrid

public abstract class MatrixGrid
extends Grid

Abstract base class for all grid structures that can store the weight vectors in a 2D matrix.

Field Summary

protected static org.apache.log4j.Logger	log interface to log4j system
protected cern.colt.matrix.DoubleMatrix2D	weights matrix to store weights

Fields inherited from class databionics.esom.grid.Grid

dim, distanceFunction, distanceFunctionName, size

Constructor Summary

MatrixGrid()
Standard constructor

MatrixGrid(int size, int dim)
Constructor with sizes

Method Summary

cern.colt.matrix.DoubleMatrix1D	getNeuron(int index) Access to a weight vector by the neuron's index
cern.colt.matrix.DoubleMatrix2D	getWeights() Get weights
protected void	init() Initialize the matrix
void	setDim(int dim) Set the value of dim.
void	setSize(int size) Set the value of size.

Methods inherited from class databionics.esom.grid.Grid

dim, findNeighbors, getDistanceFunction, getDistanceFunctionName, init, init, init, setDistanceFunction, setDistanceFunction, size, transformRadius

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static final org.apache.log4j.Logger log

interface to log4j system

weights

protected cern.colt.matrix.DoubleMatrix2D weights

matrix to store weights

Constructor Detail

MatrixGrid

public MatrixGrid()

Standard constructor

MatrixGrid

public MatrixGrid(int size,
                  int dim)

Constructor with sizes

Parameters:

size - number of grid points

dim - number of weights per neuron

Method Detail

setSize

public void setSize(int size)

Set the value of size.

Overrides:

setSize in class Grid

Parameters:

size - value of size.

setDim

public void setDim(int dim)

Set the value of dim.

Overrides:

setDim in class Grid

Parameters:

dim - size value of dim.

init

protected void init()

Initialize the matrix

getNeuron

public cern.colt.matrix.DoubleMatrix1D getNeuron(int index)

Access to a weight vector by the neuron's index

Specified by:

getNeuron in class Grid

Parameters:

index - index of neuron

getWeights

public cern.colt.matrix.DoubleMatrix2D getWeights()

Get weights

Returns:

matrix of weight vectors