added note on fann version to be used

svn path=/trunk/externals/ann/; revision=8913

1 files changed, 752 insertions, 751 deletions

diff --git a/src/ann_mlp.c b/src/ann_mlp.c
index 096b21a..53f61da 100755
--- a/src/ann_mlp.c
+++ b/src/ann_mlp.c
@@ -1,751 +1,752 @@
-/*	nn : Neural Networks for PD
-	by Davide Morelli - info@davidemorelli.it - http://www.davidemorelli.it
-	this software is simply an interface for FANN classes
-	http://fann.sourceforge.net/
-	FANN is obviously needed for compilation
-	this software is licensed under the GNU General Public License
-*/
-
-/*
-  hacked by Georg Holzmann for some additional methods, bug fixes, ...
-  2005, grh@mur.at
-*/
-
-#include <stdio.h>
-#include <string.h>
-#include "m_pd.h"
-#include "fann.h"
-
-#ifndef VERSION 
-#define VERSION "0.2"
-#endif
-
-#ifndef __DATE__ 
-#define __DATE__ ""
-#endif
-
-#define TRAIN 0
-#define RUN  1
-
-static t_class *ann_mlp_class;
-
-typedef struct _ann_mlp {
-	t_object  x_obj;
-	struct fann *ann;
-	int mode; // 0 = training, 1 = running
-	t_symbol *filename; // name of the file where this ann is saved
-	t_symbol *filenametrain; // name of the file with training data
-	float desired_error;
-	unsigned int max_iterations;
-	unsigned int iterations_between_reports;
-  fann_type *input;     // grh: storage for input
-  t_atom *output;       // grh: storage for output (t_atom)
-  fann_type *out_float; // grh: storage for output (fann_type)
-  t_canvas *x_canvas;
-	t_outlet *l_out, *f_out;
-} t_ann_mlp;
-
-// allocation
-static void ann_mlp_allocate_storage(t_ann_mlp *x)
-{
-  unsigned int i;
-
-  if(!x->ann)
-    return;
-  
-  x->input = (fann_type *)getbytes(x->ann->num_input*sizeof(fann_type));
-  x->output = (t_atom *)getbytes(x->ann->num_output*sizeof(t_atom));
-  x->out_float = (fann_type *)getbytes(x->ann->num_output*sizeof(fann_type));
-  
-  // init storage with zeros
-  for (i=0; i<x->ann->num_input; i++)
-    x->input[i]=0;
-  for (i=0; i<x->ann->num_output; i++)
-  {
-    SETFLOAT(x->output+i, 0);
-    x->out_float[i]=0;
-  }
-}
-
-// deallocation
-static void ann_mlp_free(t_ann_mlp *x)
-{
-  if(!x->ann)
-    return;
-  
-  freebytes(x->input, x->ann->num_input * sizeof(fann_type));
-  freebytes(x->output, x->ann->num_output * sizeof(t_atom));
-  freebytes(x->out_float, x->ann->num_output * sizeof(fann_type));
-  fann_destroy(x->ann);
-}
-
-static void ann_mlp_help(t_ann_mlp *x)
-{
-	post("");
-	post("ann_mlp: neural nets for PD");
-	post("ann_mlp:Davide Morelli - info@davidemorelli.it - (c)2005");
-	post("ann_mlp:create or load an ann, train it and run it passing a list with inputs to the inlet, nn will give a list of float as output");
-	post("ann_mlp:main commands: create, filename, load, save, train-on-file, run");
-	post("ann_mlp:see help-nn.pd for details on commands and usage");
-	post("ann_mlp:this is an interface to FANN");
-
-}
-
-static void ann_mlp_createFann(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	unsigned int num_input = 2;
-	unsigned int num_output = 1;
-	unsigned int num_layers = 3;
-	unsigned int *neurons_per_layer = NULL;
-  int activated=0;
-  int i, count_args = 0;
-	float connection_rate = 1;
-	float learning_rate = (float)0.7;
-  
-  
-  // okay, start parsing init args ...
-  
-	if (argc > count_args++)
-		num_input = atom_getint(argv++);
-
-	if (argc > count_args++)
-		num_output = atom_getint(argv++);
-
-	if (argc > count_args++)
-  {
-    int hidden=0;
-    
-    num_layers = atom_getint(argv++);
-    hidden = num_layers-2;
-    
-    neurons_per_layer = (unsigned int *)getbytes(num_layers*sizeof(unsigned int));
-    
-    neurons_per_layer[0] = num_input;
-    
-    // make standard initialization (if there are too few init args)
-    for (i=1; i<hidden+1; i++)
-      neurons_per_layer[i] = 3;
-    
-    // now check init args
-    for (i=1; i<hidden+1; i++)
-    {
-      if (argc > count_args++)
-        neurons_per_layer[i] = atom_getint(argv++);
-    }
-    
-    neurons_per_layer[num_layers-1] = num_output;
-    
-    activated=1;
-  }
-	
-  if (argc > count_args++)
-		connection_rate = atom_getfloat(argv++);
-
-	if (argc > count_args++)
-		learning_rate = atom_getfloat(argv++);
-
-  // make one hidden layer as standard, if there were too few init args
-  if(!activated)
-  {
-    neurons_per_layer = (unsigned int *)getbytes(3*sizeof(unsigned int));
-    neurons_per_layer[0] = num_input;
-    neurons_per_layer[1] = 3;
-    neurons_per_layer[2] = num_output;
-  }
-
-  // ... end of parsing init args
-  
-  
-  if(x->ann)
-    ann_mlp_free(x);
-  
-  x->ann = fann_create_array(connection_rate, learning_rate, num_layers, neurons_per_layer);
-  
-  // deallocate helper array
-  freebytes(neurons_per_layer, num_layers * sizeof(unsigned int));
-  
-	if(!x->ann)
-  {
-    error("error creating the ann");
-    return;
-  }
-  
-  ann_mlp_allocate_storage(x);
-	fann_set_activation_function_hidden(x->ann, FANN_SIGMOID_SYMMETRIC);
-	fann_set_activation_function_output(x->ann, FANN_SIGMOID_SYMMETRIC);
-  
-  // set error log to stdout, so that you see it in the pd console
-  //fann_set_error_log((struct fann_error*)x->ann, stdout);
-  // unfortunately this doesn't work ... but it should do in a similar way !!
-  
-	post("created ann with:");
-	post("num_input = %i", num_input);
-	post("num_output = %i", num_output);
-	post("num_layers = %i", num_layers);
-	post("connection_rate = %f", connection_rate);
-	post("learning_rate = %f", learning_rate);
-}
-
-static void ann_mlp_print_status(t_ann_mlp *x)
-{
-		if (x->mode == TRAIN)
-			post("nn:training");
-		else
-			post("nn:running");
-}
-
-static void ann_mlp_train(t_ann_mlp *x)
-{
-	x->mode=TRAIN;
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-	fann_reset_MSE(x->ann);
-	ann_mlp_print_status(x);
-}
-
-static void ann_mlp_run(t_ann_mlp *x)
-{
-	x->mode=RUN;
-	ann_mlp_print_status(x);
-}
-
-static void ann_mlp_set_mode(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	if (argc<1)
-	{
-		error("usage: setmode 0/1: 0 for training, 1 for running");
-	}
-	else	
-	{	
-		x->mode = atom_getint(argv++);
-		ann_mlp_print_status(x);
-	}
-}
-
-static void ann_mlp_train_on_file(t_ann_mlp *x, t_symbol *s)
-{
-  // make correct path
-  char patcher_path[MAXPDSTRING];
-  char filename[MAXPDSTRING];
-
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-
-  // make correct path
-  canvas_makefilename(x->x_canvas, s->s_name, patcher_path, MAXPDSTRING);
-  sys_bashfilename(patcher_path, filename);
-  x->filenametrain = gensym(filename);
-
-  if(!x->filenametrain)
-    return;
-  
-	post("nn: starting training on file %s, please be patient and wait ... (it could take severeal minutes to complete training)", x->filenametrain->s_name);
-
-	fann_train_on_file(x->ann, x->filenametrain->s_name, x->max_iterations,
-		x->iterations_between_reports, x->desired_error);
-	
-	post("ann_mlp: finished training on file %s", x->filenametrain->s_name);
-}
-
-static void ann_mlp_set_desired_error(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	float desired_error = (float)0.001;
-	if (0<argc)
-	{
-		desired_error = atom_getfloat(argv);
-		x->desired_error = desired_error;
-		post("nn:desired_error set to %f", x->desired_error);
-	} else
-	{
-		error("you must pass me a float");
-	}
-}
-
-static void ann_mlp_set_max_iterations(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	unsigned int max_iterations = 500000;
-	if (argc>0)
-	{
-		max_iterations = atom_getint(argv);
-		x->max_iterations = max_iterations;
-		post("nn:max_iterations set to %i", x->max_iterations);
-	} else
-	{
-		error("you must pass me an int");
-	}
-}
-
-static void ann_mlp_set_iterations_between_reports(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	
-	unsigned int iterations_between_reports = 1000;
-	if (argc>0)
-	{
-		iterations_between_reports = atom_getint(argv);
-		x->iterations_between_reports = iterations_between_reports;
-		post("nn:iterations_between_reports set to %i", x->iterations_between_reports);
-	} else
-	{
-		error("you must pass me an int");
-	}
-
-}
-
-// run the ann using floats in list passed to the inlet as input values
-// and send result to outlet as list of float
-static void ann_mlp_run_the_net(t_ann_mlp *x, t_symbol *sl, unsigned int argc, t_atom *argv)
-{
-	unsigned int i=0;	
-	fann_type *calc_out;
-
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-  
-  if(argc < x->ann->num_input)
-  {
-    error("ann_mlp: too few input values!!");
-    return;
-  }
-
-	// fill input array with actual data sent to inlet
-	for (i=0;i<x->ann->num_input;i++)
-	{
-		x->input[i] = atom_getfloat(argv++);
-	}
-	
-	// run the ann
-	calc_out = fann_run(x->ann, x->input);
-
-	// fill the output array with result from ann
-	for (i=0;i<x->ann->num_output;i++)
-		SETFLOAT(x->output+i, calc_out[i]);
-
-	// send output array to outlet
-	outlet_anything(x->l_out, gensym("list"),
-                  x->ann->num_output, x->output);
-}
-
-static void ann_mlp_train_on_the_fly(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	int i=0;
-  int quantiINs, quantiOUTs;
-	float mse;
-
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-
-	quantiINs = x->ann->num_input;
-	quantiOUTs = x->ann->num_output;
-
-	if ((quantiINs + quantiOUTs)>argc)
-	{
-		error("insufficient number of arguments passed, in training mode you must prive me a list with (num_input + num_output) floats");
-		return;
-	}
-
-	// fill input array with actual data sent to inlet
-	for (i=0;i<quantiINs;i++)
-		x->input[i] = atom_getfloat(argv++);
-
-	for (i=0;i<quantiOUTs;i++)
-		x->out_float[i] = atom_getfloat(argv++);
-	
-	//fann_reset_MSE(x->ann);
-
-	fann_train(x->ann, x->input, x->out_float);
-
-	mse = fann_get_MSE(x->ann);
-	
-	outlet_float(x->f_out, mse);
-}
-
-static void ann_mlp_manage_list(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	if (x->mode)
-		ann_mlp_run_the_net(x, sl, argc, argv);
-	else
-	{
-		ann_mlp_train_on_the_fly(x, sl, argc, argv);
-	}
-}
-
-static void ann_mlp_set_filename(t_ann_mlp *x, t_symbol *s)
-{
-  // make correct path
-  char patcher_path[MAXPDSTRING];
-  char filename[MAXPDSTRING];
-  
-  if(!s)
-    return;
-  
-  // make correct path
-  canvas_makefilename(x->x_canvas, s->s_name, patcher_path, MAXPDSTRING);
-  sys_bashfilename(patcher_path, filename);
-  x->filename = gensym(filename);
-}
-
-static void ann_mlp_load_ann_from_file(t_ann_mlp *x, t_symbol *s)
-{
-  ann_mlp_set_filename(x,s);
-  
-  if(!x->filename)
-  {
-    error("ann: no filename !!!");
-    return;
-  }
-  
-  // deallocate storage
-  if(x->ann)
-    ann_mlp_free(x);
-      
-  x->ann = fann_create_from_file(x->filename->s_name);
-  
-  if (x->ann == 0)
-    error("error opening %s", x->filename->s_name);
-  else
-    post("nn:ann loaded fom file %s", x->filename->s_name);
-  
-  // allocate storage
-  ann_mlp_allocate_storage(x);
-}
-
-static void ann_mlp_save_ann_to_file(t_ann_mlp *x, t_symbol *s)
-{
-  ann_mlp_set_filename(x,s);
-	
-  if(!x->filename)
-  {
-    error("ann: no filename !!!");
-    return;
-  }
-  
-  if (x->ann == 0)
-	{
-		error("ann is not initialized");
-	} else
-	{
-		fann_save(x->ann, x->filename->s_name);
-		post("nn:ann saved in file %s", x->filename->s_name);
-	}
-}
-
-// functions for training algo:
-static void ann_mlp_set_FANN_TRAIN_INCREMENTAL(t_ann_mlp *x)
-{
-	if (x->ann == 0)
-	{
-		error("ann is not initialized");
-	} else
-	{
-		fann_set_training_algorithm(x->ann, FANN_TRAIN_INCREMENTAL);
-		post("nn:training algorithm set to FANN_TRAIN_INCREMENTAL");
-	}
-}
-static void ann_mlp_set_FANN_TRAIN_BATCH(t_ann_mlp *x)
-{
-	if (x->ann == 0)
-	{
-		error("ann is not initialized");
-	} else
-	{
-		fann_set_training_algorithm(x->ann, FANN_TRAIN_BATCH);
-		post("nn:training algorithm set to FANN_TRAIN_BATCH");
-	}
-}
-static void ann_mlp_set_FANN_TRAIN_RPROP(t_ann_mlp *x)
-{
-	if (x->ann == 0)
-	{
-		error("ann is not initialized");
-	} else
-	{
-		fann_set_training_algorithm(x->ann, FANN_TRAIN_RPROP);
-		post("nn:training algorithm set to FANN_TRAIN_RPROP");
-	}
-}
-static void ann_mlp_set_FANN_TRAIN_QUICKPROP(t_ann_mlp *x)
-{
-	if (x->ann == 0)
-	{
-		error("ann is not initialized");
-	} else
-	{
-		fann_set_training_algorithm(x->ann, FANN_TRAIN_QUICKPROP);
-		post("nn:training algorithm set to FANN_TRAIN_QUICKPROP");
-	}
-}
-
-static void ann_mlp_set_activation_function_output(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	t_symbol *parametro = 0;
-	int funzione = 0;
-
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-
-	if (argc>0) {
-		parametro = atom_gensym(argv);
-		if (strcmp(parametro->s_name, "FANN_THRESHOLD")==0)
-			funzione = FANN_THRESHOLD;
-		if (strcmp(parametro->s_name, "FANN_THRESHOLD_SYMMETRIC")==0)
-			funzione = FANN_THRESHOLD_SYMMETRIC;
-		if (strcmp(parametro->s_name, "FANN_LINEAR")==0)
-			funzione = FANN_LINEAR;
-		if (strcmp(parametro->s_name, "FANN_SIGMOID")==0)
-			funzione = FANN_SIGMOID;
-		if (strcmp(parametro->s_name, "FANN_SIGMOID_STEPWISE")==0)
-			funzione = FANN_SIGMOID_STEPWISE;
-		if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC")==0)
-			funzione = FANN_SIGMOID_SYMMETRIC;
-		if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC_STEPWISE")==0)
-			funzione = FANN_SIGMOID_SYMMETRIC_STEPWISE;
-    if (strcmp(parametro->s_name, "FANN_GAUSSIAN")==0)
-      funzione = FANN_GAUSSIAN;
-    if (strcmp(parametro->s_name, "FANN_GAUSSIAN_STEPWISE")==0)
-      funzione = FANN_GAUSSIAN_STEPWISE;
-    if (strcmp(parametro->s_name, "FANN_ELLIOT")==0)
-      funzione = FANN_ELLIOT;
-    if (strcmp(parametro->s_name, "FANN_ELLIOT_SYMMETRIC")==0)
-      funzione = FANN_ELLIOT_SYMMETRIC;
-    
-		fann_set_activation_function_output(x->ann, funzione);
-	} else
-	{
-		error("you must specify the activation function");
-	}
-	post("nn:activation function set to %s (%i)", parametro->s_name, funzione);
-
-}
-
-static void ann_mlp_set_activation_function_hidden(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-	t_symbol *parametro = 0;
-	int funzione = 0;
-
-	if (x->ann == 0)
-	{
-		error("ann not initialized");
-		return;
-	}
-
-	if (argc>0) {
-		parametro = atom_gensym(argv);
-    if (strcmp(parametro->s_name, "FANN_THRESHOLD")==0)
-      funzione = FANN_THRESHOLD;
-    if (strcmp(parametro->s_name, "FANN_THRESHOLD_SYMMETRIC")==0)
-      funzione = FANN_THRESHOLD_SYMMETRIC;
-    if (strcmp(parametro->s_name, "FANN_LINEAR")==0)
-      funzione = FANN_LINEAR;
-    if (strcmp(parametro->s_name, "FANN_SIGMOID")==0)
-      funzione = FANN_SIGMOID;
-    if (strcmp(parametro->s_name, "FANN_SIGMOID_STEPWISE")==0)
-      funzione = FANN_SIGMOID_STEPWISE;
-    if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC")==0)
-      funzione = FANN_SIGMOID_SYMMETRIC;
-    if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC_STEPWISE")==0)
-      funzione = FANN_SIGMOID_SYMMETRIC_STEPWISE;
-    if (strcmp(parametro->s_name, "FANN_GAUSSIAN")==0)
-      funzione = FANN_GAUSSIAN;
-    if (strcmp(parametro->s_name, "FANN_GAUSSIAN_STEPWISE")==0)
-      funzione = FANN_GAUSSIAN_STEPWISE;
-    if (strcmp(parametro->s_name, "FANN_ELLIOT")==0)
-      funzione = FANN_ELLIOT;
-    if (strcmp(parametro->s_name, "FANN_ELLIOT_SYMMETRIC")==0)
-      funzione = FANN_ELLIOT_SYMMETRIC;
-    
-		fann_set_activation_function_hidden(x->ann, funzione);
-	} else
-	{
-		error("you must specify the activation function");
-	}
-	post("nn:activation function set to %s (%i)", parametro->s_name, funzione);
-
-}
-
-static void ann_mlp_randomize_weights(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)
-{
-  t_float min = -1;
-  t_float max = 1;
-
-  if(!x->ann)
-  {
-    post("ann_mlp: ann is not initialized");
-    return;
-  }
-  
-  if (argc>0)
-		min = atom_getfloat(argv++);
-
-	if (argc>1)
-		max = atom_getfloat(argv++);
-    
-  fann_randomize_weights(x->ann, min, max);
-}
-
-static void ann_mlp_learnrate(t_ann_mlp *x, t_float f)
-{
-  int learnrate = 0;
-  
-  if(!x->ann)
-  {
-    post("ann_mlp: ann is not initialized");
-    return;
-  }
-  
-  learnrate = (f<0) ? 0 : f;
-  fann_set_learning_rate(x->ann, learnrate);
-}
-
-static void ann_mlp_set_activation_steepness_hidden(t_ann_mlp *x, t_float f)
-{
-  if(!x->ann)
-  {
-    post("ann_mlp: ann is not initialized");
-    return;
-  }
-  
-  fann_set_activation_steepness_hidden(x->ann, f);
-}
-
-static void ann_mlp_set_activation_steepness_output(t_ann_mlp *x, t_float f)
-{
-  if(!x->ann)
-  {
-    post("ann_mlp: ann is not initialized");
-    return;
-  }
-  
-  fann_set_activation_steepness_output(x->ann, f);
-}
-
-void fann_set_activation_steepness_hidden(struct fann * ann, fann_type steepness);
-
-static void ann_mlp_print_ann_details(t_ann_mlp *x)
-{
-	if (x->ann == 0)
-	{
-		post("ann_mlp:ann is not initialized");
-	} else
-	{
-		post("follows a description of the current ann:");
-		post("num_input=%i", x->ann->num_input);
-		post("num_output=%i", x->ann->num_output);
-		post("learning_rate=%f", x->ann->learning_rate);
-		post("connection_rate=%f", x->ann->connection_rate);
-		post("total_neurons=%i", x->ann->total_neurons);
-		post("total_connections=%i", x->ann->total_connections);
-		post("last error=%i", x->ann->errstr);
-		if (x->filename == 0)
-		{
-			post("ann_mlp:filename not set");
-		} else
-		{
-			post("filename=%s", x->filename->s_name);
-		}
-	}
-}
-
-static void ann_mlp_print_ann_print(t_ann_mlp *x)
-{
-  if(!x->ann)
-  {
-    post("ann_mlp: ann is not initialized");
-    return;
-  }
-    
-  fann_print_connections(x->ann);
-  fann_print_parameters(x->ann);
-}
-
-static void *ann_mlp_new(t_symbol *s, int argc, t_atom *argv)
-{
-	t_ann_mlp *x = (t_ann_mlp *)pd_new(ann_mlp_class);
-	x->l_out = outlet_new(&x->x_obj, &s_list);
-	x->f_out = outlet_new(&x->x_obj, &s_float);
-
-	x->desired_error = (float)0.001;
-	x->max_iterations = 500000;
-	x->iterations_between_reports = 1000;
-	x->mode=RUN;
-  x->x_canvas = canvas_getcurrent();
-  x->filename = NULL;
-  x->filenametrain = NULL;
-  x->ann = NULL;
-  x->input = NULL;
-  x->output = NULL;
-  x->out_float = NULL;
-
-	if (argc>0) {
-		x->filename = atom_gensym(argv);
-		ann_mlp_load_ann_from_file(x, NULL);
-	}
-
-	return (void *)x;
-}
-
-void ann_mlp_setup(void) {
-	post("");
-	post("ann_mlp: multilayer perceptron for PD");
-	post("version: "VERSION"");
-	post("compiled: "__DATE__);
-	post("author: Davide Morelli");
-	post("contact: info@davidemorelli.it www.davidemorelli.it");
-
-	ann_mlp_class = class_new(gensym("ann_mlp"),
-		(t_newmethod)ann_mlp_new,
-		(t_method)ann_mlp_free, sizeof(t_ann_mlp),
-		CLASS_DEFAULT, A_GIMME, 0);
-
-	// general..
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_help, gensym("help"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_createFann, gensym("create"), A_GIMME, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_train, gensym("train"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_run, gensym("run"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_mode, gensym("setmode"), A_GIMME, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_train_on_file, gensym("train-on-file"), A_DEFSYMBOL, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_manage_list, gensym("data"), A_GIMME, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_filename, gensym("filename"), A_DEFSYMBOL, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_load_ann_from_file, gensym("load"),A_DEFSYMBOL, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_save_ann_to_file, gensym("save"),A_DEFSYMBOL, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_print_ann_details, gensym("details"), 0);
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_print_ann_print, gensym("print"), 0);
-	
-	// change training parameters
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_desired_error, gensym("desired_error"),A_GIMME, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_max_iterations, gensym("max_iterations"),A_GIMME, 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_iterations_between_reports, gensym("iterations_between_reports"),A_GIMME, 0);
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_learnrate, gensym("learnrate"), A_FLOAT, 0);
-
-	// change training  and activation algorithms
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_INCREMENTAL, gensym("FANN_TRAIN_INCREMENTAL"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_BATCH, gensym("FANN_TRAIN_BATCH"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_RPROP, gensym("FANN_TRAIN_RPROP"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_QUICKPROP, gensym("FANN_TRAIN_QUICKPROP"), 0);
-	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_function_output, gensym("set_activation_function_output"),A_GIMME, 0);
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_function_hidden, gensym("set_activation_function_hidden"),A_GIMME, 0);
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_steepness_hidden, gensym("set_activation_steepness_hidden"), A_FLOAT, 0);
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_steepness_output, gensym("set_activation_steepness_output"), A_FLOAT, 0);
-	
-  // initialization:
-  class_addmethod(ann_mlp_class, (t_method)ann_mlp_randomize_weights, gensym("randomize_weights"),A_GIMME, 0);
-  
-	// the most important one: running the ann
-	class_addlist(ann_mlp_class, (t_method)ann_mlp_manage_list);
-
-
-}
+/*	ann_mlp : Neural Networks for PD

+	by Davide Morelli - info@davidemorelli.it - http://www.davidemorelli.it

+	this software is simply an interface for FANN classes

+	http://fann.sourceforge.net/

+	FANN is obviously needed for compilation

+	USE 1.2 VERSION ONLY

+	this software is licensed under the GNU General Public License

+*/

+

+/*

+  hacked by Georg Holzmann for some additional methods, bug fixes, ...

+  2005, grh@mur.at

+*/

+

+#include <stdio.h>

+#include <string.h>

+#include "m_pd.h"

+#include "fann.h"

+

+#ifndef VERSION 

+#define VERSION "0.2"

+#endif

+

+#ifndef __DATE__ 

+#define __DATE__ ""

+#endif

+

+#define TRAIN 0

+#define RUN  1

+

+static t_class *ann_mlp_class;

+

+typedef struct _ann_mlp {

+	t_object  x_obj;

+	struct fann *ann;

+	int mode; // 0 = training, 1 = running

+	t_symbol *filename; // name of the file where this ann is saved

+	t_symbol *filenametrain; // name of the file with training data

+	float desired_error;

+	unsigned int max_iterations;

+	unsigned int iterations_between_reports;

+  fann_type *input;     // grh: storage for input

+  t_atom *output;       // grh: storage for output (t_atom)

+  fann_type *out_float; // grh: storage for output (fann_type)

+  t_canvas *x_canvas;

+	t_outlet *l_out, *f_out;

+} t_ann_mlp;

+

+// allocation

+static void ann_mlp_allocate_storage(t_ann_mlp *x)

+{

+  unsigned int i;

+

+  if(!x->ann)

+    return;

+  

+  x->input = (fann_type *)getbytes(x->ann->num_input*sizeof(fann_type));

+  x->output = (t_atom *)getbytes(x->ann->num_output*sizeof(t_atom));

+  x->out_float = (fann_type *)getbytes(x->ann->num_output*sizeof(fann_type));

+  

+  // init storage with zeros

+  for (i=0; i<x->ann->num_input; i++)

+    x->input[i]=0;

+  for (i=0; i<x->ann->num_output; i++)

+  {

+    SETFLOAT(x->output+i, 0);

+    x->out_float[i]=0;

+  }

+}

+

+// deallocation

+static void ann_mlp_free(t_ann_mlp *x)

+{

+  if(!x->ann)

+    return;

+  

+  freebytes(x->input, x->ann->num_input * sizeof(fann_type));

+  freebytes(x->output, x->ann->num_output * sizeof(t_atom));

+  freebytes(x->out_float, x->ann->num_output * sizeof(fann_type));

+  fann_destroy(x->ann);

+}

+

+static void ann_mlp_help(t_ann_mlp *x)

+{

+	post("");

+	post("ann_mlp: neural nets for PD");

+	post("ann_mlp:Davide Morelli - info@davidemorelli.it - (c)2005");

+	post("ann_mlp:create or load an ann, train it and run it passing a list with inputs to the inlet, nn will give a list of float as output");

+	post("ann_mlp:main commands: create, filename, load, save, train-on-file, run");

+	post("ann_mlp:see help-nn.pd for details on commands and usage");

+	post("ann_mlp:this is an interface to FANN");

+

+}

+

+static void ann_mlp_createFann(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	unsigned int num_input = 2;

+	unsigned int num_output = 1;

+	unsigned int num_layers = 3;

+	unsigned int *neurons_per_layer = NULL;

+  int activated=0;

+  int i, count_args = 0;

+	float connection_rate = 1;

+	float learning_rate = (float)0.7;

+  

+  

+  // okay, start parsing init args ...

+  

+	if (argc > count_args++)

+		num_input = atom_getint(argv++);

+

+	if (argc > count_args++)

+		num_output = atom_getint(argv++);

+

+	if (argc > count_args++)

+  {

+    int hidden=0;

+    

+    num_layers = atom_getint(argv++);

+    hidden = num_layers-2;

+    

+    neurons_per_layer = (unsigned int *)getbytes(num_layers*sizeof(unsigned int));

+    

+    neurons_per_layer[0] = num_input;

+    

+    // make standard initialization (if there are too few init args)

+    for (i=1; i<hidden+1; i++)

+      neurons_per_layer[i] = 3;

+    

+    // now check init args

+    for (i=1; i<hidden+1; i++)

+    {

+      if (argc > count_args++)

+        neurons_per_layer[i] = atom_getint(argv++);

+    }

+    

+    neurons_per_layer[num_layers-1] = num_output;

+    

+    activated=1;

+  }

+	

+  if (argc > count_args++)

+		connection_rate = atom_getfloat(argv++);

+

+	if (argc > count_args++)

+		learning_rate = atom_getfloat(argv++);

+

+  // make one hidden layer as standard, if there were too few init args

+  if(!activated)

+  {

+    neurons_per_layer = (unsigned int *)getbytes(3*sizeof(unsigned int));

+    neurons_per_layer[0] = num_input;

+    neurons_per_layer[1] = 3;

+    neurons_per_layer[2] = num_output;

+  }

+

+  // ... end of parsing init args

+  

+  

+  if(x->ann)

+    ann_mlp_free(x);

+  

+  x->ann = fann_create_array(connection_rate, learning_rate, num_layers, neurons_per_layer);

+  

+  // deallocate helper array

+  freebytes(neurons_per_layer, num_layers * sizeof(unsigned int));

+  

+	if(!x->ann)

+  {

+    error("error creating the ann");

+    return;

+  }

+  

+  ann_mlp_allocate_storage(x);

+	fann_set_activation_function_hidden(x->ann, FANN_SIGMOID_SYMMETRIC);

+	fann_set_activation_function_output(x->ann, FANN_SIGMOID_SYMMETRIC);

+  

+  // set error log to stdout, so that you see it in the pd console

+  //fann_set_error_log((struct fann_error*)x->ann, stdout);

+  // unfortunately this doesn't work ... but it should do in a similar way !!

+  

+	post("created ann with:");

+	post("num_input = %i", num_input);

+	post("num_output = %i", num_output);

+	post("num_layers = %i", num_layers);

+	post("connection_rate = %f", connection_rate);

+	post("learning_rate = %f", learning_rate);

+}

+

+static void ann_mlp_print_status(t_ann_mlp *x)

+{

+		if (x->mode == TRAIN)

+			post("nn:training");

+		else

+			post("nn:running");

+}

+

+static void ann_mlp_train(t_ann_mlp *x)

+{

+	x->mode=TRAIN;

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+	fann_reset_MSE(x->ann);

+	ann_mlp_print_status(x);

+}

+

+static void ann_mlp_run(t_ann_mlp *x)

+{

+	x->mode=RUN;

+	ann_mlp_print_status(x);

+}

+

+static void ann_mlp_set_mode(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	if (argc<1)

+	{

+		error("usage: setmode 0/1: 0 for training, 1 for running");

+	}

+	else	

+	{	

+		x->mode = atom_getint(argv++);

+		ann_mlp_print_status(x);

+	}

+}

+

+static void ann_mlp_train_on_file(t_ann_mlp *x, t_symbol *s)

+{

+  // make correct path

+  char patcher_path[MAXPDSTRING];

+  char filename[MAXPDSTRING];

+

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+

+  // make correct path

+  canvas_makefilename(x->x_canvas, s->s_name, patcher_path, MAXPDSTRING);

+  sys_bashfilename(patcher_path, filename);

+  x->filenametrain = gensym(filename);

+

+  if(!x->filenametrain)

+    return;

+  

+	post("nn: starting training on file %s, please be patient and wait ... (it could take severeal minutes to complete training)", x->filenametrain->s_name);

+

+	fann_train_on_file(x->ann, x->filenametrain->s_name, x->max_iterations,

+		x->iterations_between_reports, x->desired_error);

+	

+	post("ann_mlp: finished training on file %s", x->filenametrain->s_name);

+}

+

+static void ann_mlp_set_desired_error(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	float desired_error = (float)0.001;

+	if (0<argc)

+	{

+		desired_error = atom_getfloat(argv);

+		x->desired_error = desired_error;

+		post("nn:desired_error set to %f", x->desired_error);

+	} else

+	{

+		error("you must pass me a float");

+	}

+}

+

+static void ann_mlp_set_max_iterations(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	unsigned int max_iterations = 500000;

+	if (argc>0)

+	{

+		max_iterations = atom_getint(argv);

+		x->max_iterations = max_iterations;

+		post("nn:max_iterations set to %i", x->max_iterations);

+	} else

+	{

+		error("you must pass me an int");

+	}

+}

+

+static void ann_mlp_set_iterations_between_reports(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	

+	unsigned int iterations_between_reports = 1000;

+	if (argc>0)

+	{

+		iterations_between_reports = atom_getint(argv);

+		x->iterations_between_reports = iterations_between_reports;

+		post("nn:iterations_between_reports set to %i", x->iterations_between_reports);

+	} else

+	{

+		error("you must pass me an int");

+	}

+

+}

+

+// run the ann using floats in list passed to the inlet as input values

+// and send result to outlet as list of float

+static void ann_mlp_run_the_net(t_ann_mlp *x, t_symbol *sl, unsigned int argc, t_atom *argv)

+{

+	unsigned int i=0;	

+	fann_type *calc_out;

+

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+  

+  if(argc < x->ann->num_input)

+  {

+    error("ann_mlp: too few input values!!");

+    return;

+  }

+

+	// fill input array with actual data sent to inlet

+	for (i=0;i<x->ann->num_input;i++)

+	{

+		x->input[i] = atom_getfloat(argv++);

+	}

+	

+	// run the ann

+	calc_out = fann_run(x->ann, x->input);

+

+	// fill the output array with result from ann

+	for (i=0;i<x->ann->num_output;i++)

+		SETFLOAT(x->output+i, calc_out[i]);

+

+	// send output array to outlet

+	outlet_anything(x->l_out, gensym("list"),

+                  x->ann->num_output, x->output);

+}

+

+static void ann_mlp_train_on_the_fly(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	int i=0;

+  int quantiINs, quantiOUTs;

+	float mse;

+

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+

+	quantiINs = x->ann->num_input;

+	quantiOUTs = x->ann->num_output;

+

+	if ((quantiINs + quantiOUTs)>argc)

+	{

+		error("insufficient number of arguments passed, in training mode you must prive me a list with (num_input + num_output) floats");

+		return;

+	}

+

+	// fill input array with actual data sent to inlet

+	for (i=0;i<quantiINs;i++)

+		x->input[i] = atom_getfloat(argv++);

+

+	for (i=0;i<quantiOUTs;i++)

+		x->out_float[i] = atom_getfloat(argv++);

+	

+	//fann_reset_MSE(x->ann);

+

+	fann_train(x->ann, x->input, x->out_float);

+

+	mse = fann_get_MSE(x->ann);

+	

+	outlet_float(x->f_out, mse);

+}

+

+static void ann_mlp_manage_list(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	if (x->mode)

+		ann_mlp_run_the_net(x, sl, argc, argv);

+	else

+	{

+		ann_mlp_train_on_the_fly(x, sl, argc, argv);

+	}

+}

+

+static void ann_mlp_set_filename(t_ann_mlp *x, t_symbol *s)

+{

+  // make correct path

+  char patcher_path[MAXPDSTRING];

+  char filename[MAXPDSTRING];

+  

+  if(!s)

+    return;

+  

+  // make correct path

+  canvas_makefilename(x->x_canvas, s->s_name, patcher_path, MAXPDSTRING);

+  sys_bashfilename(patcher_path, filename);

+  x->filename = gensym(filename);

+}

+

+static void ann_mlp_load_ann_from_file(t_ann_mlp *x, t_symbol *s)

+{

+  ann_mlp_set_filename(x,s);

+  

+  if(!x->filename)

+  {

+    error("ann: no filename !!!");

+    return;

+  }

+  

+  // deallocate storage

+  if(x->ann)

+    ann_mlp_free(x);

+      

+  x->ann = fann_create_from_file(x->filename->s_name);

+  

+  if (x->ann == 0)

+    error("error opening %s", x->filename->s_name);

+  else

+    post("nn:ann loaded fom file %s", x->filename->s_name);

+  

+  // allocate storage

+  ann_mlp_allocate_storage(x);

+}

+

+static void ann_mlp_save_ann_to_file(t_ann_mlp *x, t_symbol *s)

+{

+  ann_mlp_set_filename(x,s);

+	

+  if(!x->filename)

+  {

+    error("ann: no filename !!!");

+    return;

+  }

+  

+  if (x->ann == 0)

+	{

+		error("ann is not initialized");

+	} else

+	{

+		fann_save(x->ann, x->filename->s_name);

+		post("nn:ann saved in file %s", x->filename->s_name);

+	}

+}

+

+// functions for training algo:

+static void ann_mlp_set_FANN_TRAIN_INCREMENTAL(t_ann_mlp *x)

+{

+	if (x->ann == 0)

+	{

+		error("ann is not initialized");

+	} else

+	{

+		fann_set_training_algorithm(x->ann, FANN_TRAIN_INCREMENTAL);

+		post("nn:training algorithm set to FANN_TRAIN_INCREMENTAL");

+	}

+}

+static void ann_mlp_set_FANN_TRAIN_BATCH(t_ann_mlp *x)

+{

+	if (x->ann == 0)

+	{

+		error("ann is not initialized");

+	} else

+	{

+		fann_set_training_algorithm(x->ann, FANN_TRAIN_BATCH);

+		post("nn:training algorithm set to FANN_TRAIN_BATCH");

+	}

+}

+static void ann_mlp_set_FANN_TRAIN_RPROP(t_ann_mlp *x)

+{

+	if (x->ann == 0)

+	{

+		error("ann is not initialized");

+	} else

+	{

+		fann_set_training_algorithm(x->ann, FANN_TRAIN_RPROP);

+		post("nn:training algorithm set to FANN_TRAIN_RPROP");

+	}

+}

+static void ann_mlp_set_FANN_TRAIN_QUICKPROP(t_ann_mlp *x)

+{

+	if (x->ann == 0)

+	{

+		error("ann is not initialized");

+	} else

+	{

+		fann_set_training_algorithm(x->ann, FANN_TRAIN_QUICKPROP);

+		post("nn:training algorithm set to FANN_TRAIN_QUICKPROP");

+	}

+}

+

+static void ann_mlp_set_activation_function_output(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	t_symbol *parametro = 0;

+	int funzione = 0;

+

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+

+	if (argc>0) {

+		parametro = atom_gensym(argv);

+		if (strcmp(parametro->s_name, "FANN_THRESHOLD")==0)

+			funzione = FANN_THRESHOLD;

+		if (strcmp(parametro->s_name, "FANN_THRESHOLD_SYMMETRIC")==0)

+			funzione = FANN_THRESHOLD_SYMMETRIC;

+		if (strcmp(parametro->s_name, "FANN_LINEAR")==0)

+			funzione = FANN_LINEAR;

+		if (strcmp(parametro->s_name, "FANN_SIGMOID")==0)

+			funzione = FANN_SIGMOID;

+		if (strcmp(parametro->s_name, "FANN_SIGMOID_STEPWISE")==0)

+			funzione = FANN_SIGMOID_STEPWISE;

+		if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC")==0)

+			funzione = FANN_SIGMOID_SYMMETRIC;

+		if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC_STEPWISE")==0)

+			funzione = FANN_SIGMOID_SYMMETRIC_STEPWISE;

+    if (strcmp(parametro->s_name, "FANN_GAUSSIAN")==0)

+      funzione = FANN_GAUSSIAN;

+    if (strcmp(parametro->s_name, "FANN_GAUSSIAN_STEPWISE")==0)

+      funzione = FANN_GAUSSIAN_STEPWISE;

+    if (strcmp(parametro->s_name, "FANN_ELLIOT")==0)

+      funzione = FANN_ELLIOT;

+    if (strcmp(parametro->s_name, "FANN_ELLIOT_SYMMETRIC")==0)

+      funzione = FANN_ELLIOT_SYMMETRIC;

+    

+		fann_set_activation_function_output(x->ann, funzione);

+	} else

+	{

+		error("you must specify the activation function");

+	}

+	post("nn:activation function set to %s (%i)", parametro->s_name, funzione);

+

+}

+

+static void ann_mlp_set_activation_function_hidden(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+	t_symbol *parametro = 0;

+	int funzione = 0;

+

+	if (x->ann == 0)

+	{

+		error("ann not initialized");

+		return;

+	}

+

+	if (argc>0) {

+		parametro = atom_gensym(argv);

+    if (strcmp(parametro->s_name, "FANN_THRESHOLD")==0)

+      funzione = FANN_THRESHOLD;

+    if (strcmp(parametro->s_name, "FANN_THRESHOLD_SYMMETRIC")==0)

+      funzione = FANN_THRESHOLD_SYMMETRIC;

+    if (strcmp(parametro->s_name, "FANN_LINEAR")==0)

+      funzione = FANN_LINEAR;

+    if (strcmp(parametro->s_name, "FANN_SIGMOID")==0)

+      funzione = FANN_SIGMOID;

+    if (strcmp(parametro->s_name, "FANN_SIGMOID_STEPWISE")==0)

+      funzione = FANN_SIGMOID_STEPWISE;

+    if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC")==0)

+      funzione = FANN_SIGMOID_SYMMETRIC;

+    if (strcmp(parametro->s_name, "FANN_SIGMOID_SYMMETRIC_STEPWISE")==0)

+      funzione = FANN_SIGMOID_SYMMETRIC_STEPWISE;

+    if (strcmp(parametro->s_name, "FANN_GAUSSIAN")==0)

+      funzione = FANN_GAUSSIAN;

+    if (strcmp(parametro->s_name, "FANN_GAUSSIAN_STEPWISE")==0)

+      funzione = FANN_GAUSSIAN_STEPWISE;

+    if (strcmp(parametro->s_name, "FANN_ELLIOT")==0)

+      funzione = FANN_ELLIOT;

+    if (strcmp(parametro->s_name, "FANN_ELLIOT_SYMMETRIC")==0)

+      funzione = FANN_ELLIOT_SYMMETRIC;

+    

+		fann_set_activation_function_hidden(x->ann, funzione);

+	} else

+	{

+		error("you must specify the activation function");

+	}

+	post("nn:activation function set to %s (%i)", parametro->s_name, funzione);

+

+}

+

+static void ann_mlp_randomize_weights(t_ann_mlp *x, t_symbol *sl, int argc, t_atom *argv)

+{

+  t_float min = -1;

+  t_float max = 1;

+

+  if(!x->ann)

+  {

+    post("ann_mlp: ann is not initialized");

+    return;

+  }

+  

+  if (argc>0)

+		min = atom_getfloat(argv++);

+

+	if (argc>1)

+		max = atom_getfloat(argv++);

+    

+  fann_randomize_weights(x->ann, min, max);

+}

+

+static void ann_mlp_learnrate(t_ann_mlp *x, t_float f)

+{

+  int learnrate = 0;

+  

+  if(!x->ann)

+  {

+    post("ann_mlp: ann is not initialized");

+    return;

+  }

+  

+  learnrate = (f<0) ? 0 : f;

+  fann_set_learning_rate(x->ann, learnrate);

+}

+

+static void ann_mlp_set_activation_steepness_hidden(t_ann_mlp *x, t_float f)

+{

+  if(!x->ann)

+  {

+    post("ann_mlp: ann is not initialized");

+    return;

+  }

+  

+  fann_set_activation_steepness_hidden(x->ann, f);

+}

+

+static void ann_mlp_set_activation_steepness_output(t_ann_mlp *x, t_float f)

+{

+  if(!x->ann)

+  {

+    post("ann_mlp: ann is not initialized");

+    return;

+  }

+  

+  fann_set_activation_steepness_output(x->ann, f);

+}

+

+void fann_set_activation_steepness_hidden(struct fann * ann, fann_type steepness);

+

+static void ann_mlp_print_ann_details(t_ann_mlp *x)

+{

+	if (x->ann == 0)

+	{

+		post("ann_mlp:ann is not initialized");

+	} else

+	{

+		post("follows a description of the current ann:");

+		post("num_input=%i", x->ann->num_input);

+		post("num_output=%i", x->ann->num_output);

+		post("learning_rate=%f", x->ann->learning_rate);

+		post("connection_rate=%f", x->ann->connection_rate);

+		post("total_neurons=%i", x->ann->total_neurons);

+		post("total_connections=%i", x->ann->total_connections);

+		post("last error=%i", x->ann->errstr);

+		if (x->filename == 0)

+		{

+			post("ann_mlp:filename not set");

+		} else

+		{

+			post("filename=%s", x->filename->s_name);

+		}

+	}

+}

+

+static void ann_mlp_print_ann_print(t_ann_mlp *x)

+{

+  if(!x->ann)

+  {

+    post("ann_mlp: ann is not initialized");

+    return;

+  }

+    

+  fann_print_connections(x->ann);

+  fann_print_parameters(x->ann);

+}

+

+static void *ann_mlp_new(t_symbol *s, int argc, t_atom *argv)

+{

+	t_ann_mlp *x = (t_ann_mlp *)pd_new(ann_mlp_class);

+	x->l_out = outlet_new(&x->x_obj, &s_list);

+	x->f_out = outlet_new(&x->x_obj, &s_float);

+

+	x->desired_error = (float)0.001;

+	x->max_iterations = 500000;

+	x->iterations_between_reports = 1000;

+	x->mode=RUN;

+  x->x_canvas = canvas_getcurrent();

+  x->filename = NULL;

+  x->filenametrain = NULL;

+  x->ann = NULL;

+  x->input = NULL;

+  x->output = NULL;

+  x->out_float = NULL;

+

+	if (argc>0) {

+		x->filename = atom_gensym(argv);

+		ann_mlp_load_ann_from_file(x, NULL);

+	}

+

+	return (void *)x;

+}

+

+void ann_mlp_setup(void) {

+	post("");

+	post("ann_mlp: multilayer perceptron for PD");

+	post("version: "VERSION"");

+	post("compiled: "__DATE__);

+	post("author: Davide Morelli");

+	post("contact: info@davidemorelli.it www.davidemorelli.it");

+

+	ann_mlp_class = class_new(gensym("ann_mlp"),

+		(t_newmethod)ann_mlp_new,

+		(t_method)ann_mlp_free, sizeof(t_ann_mlp),

+		CLASS_DEFAULT, A_GIMME, 0);

+

+	// general..

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_help, gensym("help"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_createFann, gensym("create"), A_GIMME, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_train, gensym("train"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_run, gensym("run"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_mode, gensym("setmode"), A_GIMME, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_train_on_file, gensym("train-on-file"), A_DEFSYMBOL, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_manage_list, gensym("data"), A_GIMME, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_filename, gensym("filename"), A_DEFSYMBOL, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_load_ann_from_file, gensym("load"),A_DEFSYMBOL, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_save_ann_to_file, gensym("save"),A_DEFSYMBOL, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_print_ann_details, gensym("details"), 0);

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_print_ann_print, gensym("print"), 0);

+	

+	// change training parameters

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_desired_error, gensym("desired_error"),A_GIMME, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_max_iterations, gensym("max_iterations"),A_GIMME, 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_iterations_between_reports, gensym("iterations_between_reports"),A_GIMME, 0);

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_learnrate, gensym("learnrate"), A_FLOAT, 0);

+

+	// change training  and activation algorithms

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_INCREMENTAL, gensym("FANN_TRAIN_INCREMENTAL"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_BATCH, gensym("FANN_TRAIN_BATCH"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_RPROP, gensym("FANN_TRAIN_RPROP"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_FANN_TRAIN_QUICKPROP, gensym("FANN_TRAIN_QUICKPROP"), 0);

+	class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_function_output, gensym("set_activation_function_output"),A_GIMME, 0);

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_function_hidden, gensym("set_activation_function_hidden"),A_GIMME, 0);

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_steepness_hidden, gensym("set_activation_steepness_hidden"), A_FLOAT, 0);

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_set_activation_steepness_output, gensym("set_activation_steepness_output"), A_FLOAT, 0);

+	

+  // initialization:

+  class_addmethod(ann_mlp_class, (t_method)ann_mlp_randomize_weights, gensym("randomize_weights"),A_GIMME, 0);

+  

+	// the most important one: running the ann

+	class_addlist(ann_mlp_class, (t_method)ann_mlp_manage_list);

+

+

+}