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nnutil.c File Reference

Utility functions. More...

#include <math.h>
#include <stdlib.h>
#include <string.h>
#include "nn.h"

Functions
double	nnGetLayerError (nnLayer *layer)
	Calculate error of nodes in a layer.
double	nnGetLayerRMSError (nnLayer *layer)
	Calculate RMS error of nodes in a layer.
void	nnIterateNetworkNodes (nnNet *net, void(*f)(nnLayer *layer, nnNode *node, void *data), void *data)
	Call a function for each node in a network.
void	nnIterateNetworkLinks (nnNet *net, void(*f)(nnNode *dest, nnLink *link, void *data), void *data)
	Call a function for each link in a network.
void	nnDestroyNetwork (nnNet *net)
	free() a network and all associated structures.
nnNet *	nnCreateFullyConnectedNetwork (int nlayers, const int nnodes[])
	Create a fully-connected network.
nnNet *	nnCopyNetwork (nnNet *net)
	Make a deep-copy of a network.

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Detailed Description

Utility functions.

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Function Documentation

nnNet* nnCopyNetwork (  nnNet *    net )

Make a deep-copy of a network. Performs a deep-copy of a network. The new network will be an exact copy of source, having the same topology, weights, etc. Parameters: net  The network to copy. Returns: The new network or NULL on failure.

nnNet* nnCreateFullyConnectedNetwork (  int    nlayers, const int    nnodes[] )

Create a fully-connected network. Creates a fully-connected neural network with nlayers layers. The first layer will have nnodes[0] nodes in it, the second layer will have nnodes[1] nodes in it, etc. The network will have a bias node. Parameters: nlayers  The number of layers in the network. nnodes  An array of nlayers ints that specifies how many nodes to have in each layer. Returns: The network or NULL if the network couldn't be created.

void nnDestroyNetwork (  nnNet *    net )

free() a network and all associated structures. Frees a network and all associated structures (layers, nodes, links). Any non-NULL structure pointers are recursively freed. Parameters: net  The network to free. May be NULL.

double nnGetLayerError (  nnLayer *    layer )

Calculate error of nodes in a layer. Parameters: layer  Layer to calculate error for. Returns: Error.

double nnGetLayerRMSError (  nnLayer *    layer )

Calculate RMS error of nodes in a layer. Parameters: layer  Layer to calculate error for. Returns: RMS error.

void nnIterateNetworkLinks (  nnNet *    net, void(*    f)(nnNode *dest, nnLink *link, void *data), void *    data )

Call a function for each link in a network. Parameters: net  The network to iterate over f  Pointer to the function to call data  Passed verbatim to the function

void nnIterateNetworkNodes (  nnNet *    net, void(*    f)(nnLayer *layer, nnNode *node, void *data), void *    data )

Call a function for each node in a network. Calls func for each node in a network, including the bias node, if any. args is passed to func as the argument data. func's layer argument will be NULL for the bias node. Parameters: net  The network to iterate over f  Pointer to the function to call data  Passed verbatim to the function

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Variable Documentation

const char rcsid[] [static]

Initial value: "$Id: nnutil.c 319 2003-02-22 08:57:23Z asaddi $"

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