// Train the Hidden Markov Model
public void TrainHMM()
{
// First reset it back to default values
hmm.initialize();
// Construct a list of symbol sequences representing all the training gestures
List <List <int> > seqs = new List <List <int> >();
foreach (Gesture g in gc.gestures)
{
seqs.Add(q.QuantizeGesture(g));
}
// train these equences
hmm.train(seqs);
// recompute the a priori probability
// just compute the mean of all the probabilities of the training gestures
DefaultProbability = 0.0f;
foreach (Gesture g in gc.gestures)
{
DefaultProbability += MatchGesture(g);
}
DefaultProbability /= gc.gestures.Count;
}
public static void Main()
{
bool reverse = false;
modshogun.init_shogun_with_defaults();
int N = 1;
int M = 512;
double pseudo = 1e-5;
int order = 3;
int gap = 0;
string[] fm_train_dna = Load.load_cubes("../data/fm_train_cube.dat");
StringCharFeatures charfeat = new StringCharFeatures(fm_train_dna, EAlphabet.CUBE);
StringWordFeatures feats = new StringWordFeatures(charfeat.get_alphabet());
feats.obtain_from_char(charfeat, order - 1, order, gap, reverse);
HMM hmm = new HMM(feats, N, M, pseudo);
hmm.train();
hmm.baum_welch_viterbi_train(BaumWelchViterbiType.BW_NORMAL);
int num_examples = feats.get_num_vectors();
int num_param = hmm.get_num_model_parameters();
for (int i = 0; i < num_examples; i++)
{
for (int j = 0; j < num_param; j++)
{
hmm.get_log_derivative(j, i);
}
}
int best_path = 0;
int best_path_state = 0;
for (int i = 0; i < num_examples; i++)
{
best_path += (int)hmm.best_path(i);
for (int j = 0; j < N; j++)
{
best_path_state += hmm.get_best_path_state(i, j);
}
}
double[] lik_example = hmm.get_log_likelihood();
double lik_sample = hmm.get_log_likelihood_sample();
modshogun.exit_shogun();
}
internal static ArrayList run(IList para)
{
bool reverse = false;
modshogun.init_shogun_with_defaults();
int N = (int)((int?)para[0]);
int M = (int)((int?)para[1]);
double pseudo = (double)((double?)para[2]);
int order = (int)((int?)para[3]);
int gap = (int)((int?)para[4]);
string[] fm_train_dna = Load.load_cubes("../data/fm_train_cube.dat");
StringCharFeatures charfeat = new StringCharFeatures(fm_train_dna, CUBE);
StringWordFeatures feats = new StringWordFeatures(charfeat.get_alphabet());
feats.obtain_from_char(charfeat, order-1, order, gap, reverse);
HMM hmm = new HMM(feats, N, M, pseudo);
hmm.train();
hmm.baum_welch_viterbi_train(BW_NORMAL);
int num_examples = feats.get_num_vectors();
int num_param = hmm.get_num_model_parameters();
for (int i = 0; i < num_examples; i++)
{
for(int j = 0; j < num_param; j++)
{
hmm.get_log_derivative(j, i);
}
}
int best_path = 0;
int best_path_state = 0;
for(int i = 0; i < num_examples; i++)
{
best_path += hmm.best_path(i);
for(int j = 0; j < N; j++)
{
best_path_state += hmm.get_best_path_state(i, j);
}
}
DoubleMatrix lik_example = hmm.get_log_likelihood();
double lik_sample = hmm.get_log_likelihood_sample();
ArrayList result = new ArrayList();
result.Add(lik_example);
result.Add(lik_sample);
result.Add(hmm);
modshogun.exit_shogun();
return result;
}
public static void Main()
{
bool reverse = false;
modshogun.init_shogun_with_defaults();
int N = 1;
int M = 512;
double pseudo = 1e-5;
int order = 3;
int gap = 0;
string[] fm_train_dna = Load.load_cubes("../data/fm_train_cube.dat");
StringCharFeatures charfeat = new StringCharFeatures(fm_train_dna, EAlphabet.CUBE);
StringWordFeatures feats = new StringWordFeatures(charfeat.get_alphabet());
feats.obtain_from_char(charfeat, order-1, order, gap, reverse);
HMM hmm = new HMM(feats, N, M, pseudo);
hmm.train();
hmm.baum_welch_viterbi_train(BaumWelchViterbiType.BW_NORMAL);
int num_examples = feats.get_num_vectors();
int num_param = hmm.get_num_model_parameters();
for (int i = 0; i < num_examples; i++)
for(int j = 0; j < num_param; j++) {
hmm.get_log_derivative(j, i);
}
int best_path = 0;
int best_path_state = 0;
for(int i = 0; i < num_examples; i++){
best_path += (int)hmm.best_path(i);
for(int j = 0; j < N; j++)
best_path_state += hmm.get_best_path_state(i, j);
}
double[] lik_example = hmm.get_log_likelihood();
double lik_sample = hmm.get_log_likelihood_sample();
modshogun.exit_shogun();
}