NAME

       mlpack_hmm_train - hidden markov model (hmm) training

SYNOPSIS

        mlpack_hmm_train [-h] [-v] -i string -t string [-b] [-g int] [-l string] [-m string] [-o string] [-s int] [-n int] [-T double] -V

DESCRIPTION

       This  program  allows a Hidden Markov Model to be trained on labeled or unlabeled data. It
       support three types of HMMs: discrete HMMs, Gaussian HMMs, or GMM HMMs.

       Either one input sequence can be specified (with  --input_file),  or,  a  file  containing
       files  in  which  input  sequences  can  be  found (when --input_file and --batch are used
       together). In addition, labels can be provided in the file specified by --labels_file, and
       if  --batch  is  used,  the  file given to --labels_file should contain a list of files of
       labels corresponding to the sequences in the file given to --input_file.

       The HMM is trained with the Baum-Welch algorithm if no labels are provided.  The tolerance
       of the Baum-Welch algorithm can be set with the --tolerance option.

       Optionally,  a  pre-created HMM model can be used as a guess for the transition matrix and
       emission probabilities; this is specifiable with --model_file.

REQUIRED OPTIONS

       --input_file (-i) [string]
              File containing input observations.

       --type (-t) [string]
              Type of HMM: discrete | gaussian | gmm.

OPTIONS

       --batch (-b)
              If true, input_file (and if passed, labels_file) are expected to contain a list  of
              files to use as input observation sequences (and label sequences).

       --gaussians (-g) [int]
              Number of gaussians in each GMM (necessary when type is 'gmm'. Default value 0.

       --help (-h)
              Default help info.

       --info [string]
              Get help on a specific module or option.  Default value ''.

       --labels_file (-l) [string]
              Optional file of hidden states, used for labeled training. Default value ''.

       --model_file (-m) [string]
              Pre-existing HMM model (optional). Default value ''.

       --output_model_file (-o) [string]
              File to save trained HMM to. Default value 'output_hmm.xml'.

       --seed (-s) [int]
              Random seed. If 0, 'std::time(NULL)' is used.  Default value 0.

       --states (-n) [int]
              Number  of hidden states in HMM (necessary, unless model_file is specified. Default
              value 0.

       --tolerance (-T) [double]
              Tolerance of the Baum-Welch algorithm. Default value 1e-05.

       --verbose (-v)
              Display informational messages and the full list of parameters and  timers  at  the
              end of execution.

       --version (-V)
              Display the version of mlpack.

ADDITIONAL INFORMATION

       For  further  information,  including  relevant papers, citations, and theory, consult the
       documentation found at http://www.mlpack.org or included with your DISTRIBUTION OF MLPACK.

                                                                              mlpack_hmm_train(1)