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iomanagelwnnfann Class Reference

This class manages files in lwnn format and fann format. More...

#include <iomanagelwnnfann.h>

Inheritance diagram for iomanagelwnnfann:

List of all members.

Public Member Functions
	iomanagelwnnfann ()
	Constructor Does nothing, of course, because the class has no fields!
virtual void	info_from_file (const string &filename, int *npatterns, int *ninput, int *noutput)
	Read info from file.
virtual void	load_patterns (const string &filename, float **inputs, float **targets, int ninput, int noutput, int npatterns)
	Read info from file.
Static Public Member Functions
void	info_from_file_lwnn (const string &filename, int *npatterns, int *ninput, int *noutput)
	Read info from file.
void	info_from_file_fann (const string &filename, int *npatterns, int *ninput, int *noutput)
	Read patterns from file.
void	load_patterns_lwnn (const string &filename, float **inputs, float **targets, int ninput, int noutput, int npatterns)
	Read info from file.
void	load_patterns_fann (const string &filename, float **inputs, float **targets, int ninput, int noutput, int npatterns)
	Read info from file.

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Detailed Description

This class manages files in lwnn format and fann format.

It is derived by iomanage and implemets reading in two textual formats.

FORMAT OF INPUT FILES

• lwnn: This type of files supports comments, ignoring lines beginning with #.
  Comments are not allowed between a input line and a target line.
  The first (not comment) line is the number of pairs in the file.
  The second line is the number of inputs, the third one the number of outputs.
  Then there should be 2 * no_of_pairs lines containing inputs and matching target. Numbers are delimited by spaces

• fann: This is the format used by fann (Fast Artificial Neural Network) library ( see http://fann.sourceforge.net/ ) by Steffen Nissen (lukesky@diku.dk) The code for reading is borrowed and adapted from that library.
  Format: No comments are supported. The first line should containt three integers being the number of pairs, the number of inputs and outputs Then there are no_of_pairs lines containing INPUTS and no_of_pairs lines containing outputs.

The class guesses the format of the file and reads properly a file without having to know its type.

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Member Function Documentation

virtual void iomanagelwnnfann::info_from_file (  const string &  filename, int *  npatterns, int *  ninput, int *  noutput )  [virtual]

Read info from file. Parameters: filename  the name of a file of input/output pairs npatterns  Pointer to a int where is returned the number of pairs in the file ninput  Pointer to a int where is returned the number of inputs noutput  Pointer to a int where is returned the number of outputs Can throw a runtime_error exception if file does not exist. Works with both formats and guesses the right format by itself Implements iomanage.

void iomanagelwnnfann::info_from_file_lwnn (  const string &  filename, int *  npatterns, int *  ninput, int *  noutput )  [static]

Read info from file. Parameters: filename  the name of a file of input/output pairs npatterns  Pointer to a int where is returned the number of pairs in the file ninput  Pointer to a int where is returned the number of inputs noutput  Pointer to a int where is returned the number of outputs Can throw a runtime_error exception if file does not exist. Works only with lwnn format

void iomanagelwnnfann::info_from_file_fann (  const string &  filename, int *  npatterns, int *  ninput, int *  noutput )  [static]

Read patterns from file. Parameters: filename  the name of a file of input/output pairs npatterns  Pointer to a int where is returned the number of pairs in the file ninput  Pointer to a int where is returned the number of inputs noutput  Pointer to a int where is returned the number of outputs Can throw a runtime_error exception if file does not exist. Works only with fann format

virtual void iomanagelwnnfann::load_patterns (  const string &  filename, float **  inputs, float **  targets, int  ninput, int  noutput, int  npatterns )  [virtual]

Read info from file. Parameters: filename  the name of a file of input/output pairs inputs  Read the inputs in this matrix targets  Reat the targets in this matrix ninput  Number of inputs wanted. noutput  Number of outputs wanted npatterns  Number of patterns wanted Precondition: memory in inputs and outputs has been allocated for npatterns with ninput and noutput vectors. (First index is the index of pattern, second index is the index of neuron) If the number of inputs or outputs of the patterns or the number of patterns in the file is not equal to ninput and noutput and npatterns throws a runtime_error. Can throw a runtime_error exception if the format of the file isn't right. Works with both formats and guesses the right format by itself Implements iomanage.

void iomanagelwnnfann::load_patterns_lwnn (  const string &  filename, float **  inputs, float **  targets, int  ninput, int  noutput, int  npatterns )  [static]

Read info from file. Parameters: filename  the name of a file of input/output pairs inputs  Read the inputs in this matrix targets  Reat the targets in this matrix ninput  Number of inputs wanted. noutput  Number of outputs wanted npatterns  Number of patterns wanted Precondition: memory in inputs and outputs has been allocated for npatterns with ninput and noutput vectors. (First index is the index of pattern, second index is the index of neuron) Works only with lwnn format

void iomanagelwnnfann::load_patterns_fann (  const string &  filename, float **  inputs, float **  targets, int  ninput, int  noutput, int  npatterns )  [static]

Read info from file. Parameters: filename  the name of a file of input/output pairs inputs  Read the inputs in this matrix targets  Reat the targets in this matrix ninput  Number of inputs wanted. noutput  Number of outputs wanted npatterns  Number of patterns wanted Precondition: memory in inputs and outputs has been allocated for npatterns with ninput and noutput vectors. (First index is the index of pattern, second index is the index of neuron) If the number of inputs or outputs of the patterns in the file is not equal to ninput and noutput throws a runtime_error. Can throw a runtime_error exception if the format of the file isn't right. Works only with fann format

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The documentation for this class was generated from the following file:

• iomanagelwnnfann.h

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