keel.Algorithms.Neural_Networks.RBFN

Class RBFUtils

java.lang.Object

keel.Algorithms.Neural_Networks.RBFN.RBFUtils

public class RBFUtils
extends java.lang.Object

Offers several utilities

Since:

JDK1.5

Version:

1.0

Author:

Writen by Victor Manuel Rivas Santos (University of Jaen) 22/07/2004, Modified by Maria Dolores Perez Godoy (University of Jaen) 17/12/2008

Constructor Summary

Constructors

Constructor and Description
RBFUtils()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	array2string(double[] _a) Creates a string from an array of doubles
static double	avegDistance(double[][] _values) Computes the average distance between vectors in a double[][]
static void	createOutputFile(java.lang.String _origin, java.lang.String _destiny) Creates an output file following Keel rules: the header of the training/test file must be written into the result file.
static double	euclidean(double[] _a, double[] _b) Computes the euclidean distance between two vector of doubles with equal size.
static double	geomDistance(double[] center, int nCenter, double[][] _values) Computes the geometric mean of the distance between the given center and the 2 nearest vectors in a double[][]
static boolean	getVerbosity() Returns verbosity value
static double	maxDistance(double[][] _values) Computes the maximun distance between vectors in a double[][]
static int	maxInVector(double[] _vector) Returns the index of the higher value
static double[]	medVect(double[][] v) Computes the average of the rows of matrix v
static java.util.Hashtable	parameters(java.lang.String fileName) Reads a text file with parameters of the form name=value and returns a hastable containing them.
static void	printArray(double[] _a) Prints on console the elements of a double array.
static double	RMSDistance(double[] center, int nCenter, double[][] _values, int N) Computes the RMSdistance between the given center and the n nearest vectors in a double[][]
static boolean	setVerbosity(boolean _value) Sets verbosity value from a given value
static boolean	setVerbosity(java.util.Hashtable _hashtable) Sets verbosity value from hashtable containing parameters
static double[]	vector2doubles(java.util.Vector _v) Turns vector of strings into a double array.
static double[]	vector2Input(java.util.Vector _v, int _inpDim) Turns vector of strings into a double array containing only the inputs
static void	vector2InputOutput(java.util.Vector _v, int _inpDim, double[] _input, double[] _output) Turns vector of strings into two double arrays, one for inputs and other for outputs.
static double[]	vector2Output(java.util.Vector _v, int _outDim) Turns vector of strings into a double array containing only the outputs
static void	verbose(java.lang.String _cad) Prints the parameter without adding new line only if verbosity has been set to True.
static void	verboseln(java.lang.String _cad) Prints the parameter and adds a new line only if verbosity has been set to True.

Methods inherited from class java.lang.Object

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

Constructor Detail

RBFUtils

public RBFUtils()

Method Detail

setVerbosity

public static boolean setVerbosity(java.util.Hashtable _hashtable)

Sets verbosity value from hashtable containing parameters

Parameters:

_hashtable - The hashtable containing the parameters.

Returns:

Verbosity value

setVerbosity

public static boolean setVerbosity(boolean _value)

Sets verbosity value from a given value

Parameters:

_value - True or false

Returns:

Verbosity value

getVerbosity

public static boolean getVerbosity()

Returns verbosity value

Returns:

True or false

verbose

public static void verbose(java.lang.String _cad)

Prints the parameter without adding new line only if verbosity has been set to True.

Parameters:

_cad - Parameter to be printed.

verboseln

public static void verboseln(java.lang.String _cad)

Prints the parameter and adds a new line only if verbosity has been set to True.

Parameters:

_cad - Parameter to be printed.

vector2doubles

public static double[] vector2doubles(java.util.Vector _v)

Turns vector of strings into a double array.

Parameters:

_v - The vector

Returns:

The array containing the values turned into doubles.

vector2InputOutput

public static void vector2InputOutput(java.util.Vector _v,
                                      int _inpDim,
                                      double[] _input,
                                      double[] _output)
                               throws java.io.IOException

Turns vector of strings into two double arrays, one for inputs and other for outputs. It returns _input and _output because they change their values.

Parameters:

_v - The vector

_inpDim - Input dimension

_input - Array in which INPUT values are returned

_output - Array in which OUTPUT values are returned

Throws:

java.io.IOException - if the dimension of inputs or outputs is 0

vector2Input

public static double[] vector2Input(java.util.Vector _v,
                                    int _inpDim)
                             throws java.io.IOException

Turns vector of strings into a double array containing only the inputs

Parameters:

_v - The vector

_inpDim - Input dimension

Returns:

The array containing the values

Throws:

java.io.IOException - if the dimension of inputs is 0

vector2Output

public static double[] vector2Output(java.util.Vector _v,
                                     int _outDim)
                              throws java.io.IOException

Turns vector of strings into a double array containing only the outputs

Parameters:

_v - The vector

_outDim - Output dimension

Returns:

The array containing the values

Throws:

java.io.IOException - if the dimension of outputs is 0

printArray

public static void printArray(double[] _a)

Prints on console the elements of a double array.

Parameters:

_a - The array

array2string

public static java.lang.String array2string(double[] _a)

Creates a string from an array of doubles

Parameters:

_a - The array

Returns:

The string.

euclidean

public static double euclidean(double[] _a,
                               double[] _b)

Computes the euclidean distance between two vector of doubles with equal size.

Parameters:

_a - First vector

_b - Second vector

Returns:

A double that is the euclidean distance.

medVect

public static double[] medVect(double[][] v)

Computes the average of the rows of matrix v

Parameters:

v - The matrix

Returns:

A vector with this average

maxDistance

public static double maxDistance(double[][] _values)

Computes the maximun distance between vectors in a double[][]

Parameters:

_values - The array containing the vectors

Returns:

The maximun distance between vectors in a double[][]

avegDistance

public static double avegDistance(double[][] _values)

Computes the average distance between vectors in a double[][]

Parameters:

_values - The array containing the vectors

Returns:

The maximun distance between vectors in a double[][]

geomDistance

public static double geomDistance(double[] center,
                                  int nCenter,
                                  double[][] _values)

Computes the geometric mean of the distance between the given center and the 2 nearest vectors in a double[][]

Parameters:

center - centers given.

nCenter - number of centers

_values - The array containing the vectors

Returns:

The maximun distance between vectors in a double[][]

RMSDistance

public static double RMSDistance(double[] center,
                                 int nCenter,
                                 double[][] _values,
                                 int N)

Computes the RMSdistance between the given center and the n nearest vectors in a double[][]

Parameters:

center - centers given.

_values - The array containing the vectors

nCenter - number of centers

N - number of nearest elements

Returns:

The maximun distance between vectors in a double[][]

parameters

public static java.util.Hashtable parameters(java.lang.String fileName)

Reads a text file with parameters of the form name=value and returns a hastable containing them.

Parameters:

fileName - Name of the file containing the parameters.

Returns:

A hashtable with the parameters indexed by their names.

createOutputFile

public static void createOutputFile(java.lang.String _origin,
                                    java.lang.String _destiny)

Creates an output file following Keel rules: the header of the training/test file must be written into the result file.

Parameters:

_origin - Name of the training/test file

_destiny - Name of the output file

maxInVector

public static int maxInVector(double[] _vector)

Returns the index of the higher value

Parameters:

_vector - Vector the datos in which higer values will be find

Returns:

Nothing.