mirror of
https://github.com/NekoX-Dev/NekoX.git
synced 2024-12-15 04:39:35 +01:00
111 lines
3.1 KiB
C
111 lines
3.1 KiB
C
|
/*
|
||
|
|
* GENANN - Minimal C Artificial Neural Network
|
||
|
|
*
|
||
|
|
* Copyright (c) 2015, 2016 Lewis Van Winkle
|
||
|
|
*
|
||
|
|
* http://CodePlea.com
|
||
|
|
*
|
||
|
|
* This software is provided 'as-is', without any express or implied
|
||
|
|
* warranty. In no event will the authors be held liable for any damages
|
||
|
|
* arising from the use of this software.
|
||
|
|
*
|
||
|
|
* Permission is granted to anyone to use this software for any purpose,
|
||
|
|
* including commercial applications, and to alter it and redistribute it
|
||
|
|
* freely, subject to the following restrictions:
|
||
|
|
*
|
||
|
|
* 1. The origin of this software must not be misrepresented; you must not
|
||
|
|
* claim that you wrote the original software. If you use this software
|
||
|
|
* in a product, an acknowledgement in the product documentation would be
|
||
|
|
* appreciated but is not required.
|
||
|
|
* 2. Altered source versions must be plainly marked as such, and must not be
|
||
|
|
* misrepresented as being the original software.
|
||
|
|
* 3. This notice may not be removed or altered from any source distribution.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
#ifndef __GENANN_H__
|
||
|
|
#define __GENANN_H__
|
||
|
|
|
||
|
|
#include <stdio.h>
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
extern "C" {
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#ifndef GENANN_RANDOM
|
||
|
|
/* We use the following for uniform random numbers between 0 and 1.
|
||
|
|
* If you have a better function, redefine this macro. */
|
||
|
|
#define GENANN_RANDOM() (((double)rand())/RAND_MAX)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
|
||
|
|
typedef double (*genann_actfun)(double a);
|
||
|
|
|
||
|
|
|
||
|
|
typedef struct genann {
|
||
|
|
/* How many inputs, outputs, and hidden neurons. */
|
||
|
|
int inputs, hidden_layers, hidden, outputs;
|
||
|
|
|
||
|
|
/* Which activation function to use for hidden neurons. Default: gennann_act_sigmoid_cached*/
|
||
|
|
genann_actfun activation_hidden;
|
||
|
|
|
||
|
|
/* Which activation function to use for output. Default: gennann_act_sigmoid_cached*/
|
||
|
|
genann_actfun activation_output;
|
||
|
|
|
||
|
|
/* Total number of weights, and size of weights buffer. */
|
||
|
|
int total_weights;
|
||
|
|
|
||
|
|
/* Total number of neurons + inputs and size of output buffer. */
|
||
|
|
int total_neurons;
|
||
|
|
|
||
|
|
/* All weights (total_weights long). */
|
||
|
|
double *weight;
|
||
|
|
|
||
|
|
/* Stores input array and output of each neuron (total_neurons long). */
|
||
|
|
double *output;
|
||
|
|
|
||
|
|
/* Stores delta of each hidden and output neuron (total_neurons - inputs long). */
|
||
|
|
double *delta;
|
||
|
|
|
||
|
|
} genann;
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/* Creates and returns a new ann. */
|
||
|
|
genann *genann_init(int inputs, int hidden_layers, int hidden, int outputs);
|
||
|
|
|
||
|
|
/* Creates ANN from file saved with genann_write. */
|
||
|
|
genann *genann_read(FILE *in);
|
||
|
|
|
||
|
|
/* Sets weights randomly. Called by init. */
|
||
|
|
void genann_randomize(genann *ann);
|
||
|
|
|
||
|
|
/* Returns a new copy of ann. */
|
||
|
|
genann *genann_copy(genann const *ann);
|
||
|
|
|
||
|
|
/* Frees the memory used by an ann. */
|
||
|
|
void genann_free(genann *ann);
|
||
|
|
|
||
|
|
/* Runs the feedforward algorithm to calculate the ann's output. */
|
||
|
|
double const *genann_run(genann const *ann, double const *inputs);
|
||
|
|
|
||
|
|
/* Does a single backprop update. */
|
||
|
|
void genann_train(genann const *ann, double const *inputs, double const *desired_outputs, double learning_rate);
|
||
|
|
|
||
|
|
/* Saves the ann. */
|
||
|
|
void genann_write(genann const *ann, FILE *out);
|
||
|
|
|
||
|
|
|
||
|
|
double genann_act_sigmoid(double a);
|
||
|
|
double genann_act_sigmoid_cached(double a);
|
||
|
|
double genann_act_threshold(double a);
|
||
|
|
double genann_act_linear(double a);
|
||
|
|
|
||
|
|
|
||
|
|
#ifdef __cplusplus
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#endif /*__GENANN_H__*/
|