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README  view on Meta::CPAN

                [ 'work', 'rainy' ],
              ];

              my $v = Algorithm::Viterbi->new(start_state => '###');
              $v->train($observations);

              print Dumper($v);

            will produce:

              $VAR1 = bless( {
                             'transition' => {
                                               'sunny' => {
                                                            'sunny' => '0.5',
                                                            'rainy' => '0.25'
                                                          },
                                               'rainy' => {
                                                            'sunny' => '0.5',
                                                            'rainy' => '0.5'
                                                          },
                                               '###' => {

lib/Algorithm/Viterbi.pm  view on Meta::CPAN

The values of the attributes in the example are the default values.
For a detailed description and use of these attributes, see below.

=cut

sub new
{
  my $class = shift; 
  my $self = {@_};
  bless $self, $class;

  $self->{unknown_transition_prob} = 0 if (!defined($self->{unknown_transition_prob}));
  $self->{start_state} = '$' if (!defined($self->{start_state}));

  return $self;
}

=item train

This method computes the start, emission and transition probabilities 

lib/Algorithm/Viterbi.pm  view on Meta::CPAN

    [ 'work', 'rainy' ],
  ];

  my $v = Algorithm::Viterbi->new(start_state => '###');
  $v->train($observations);

  print Dumper($v);

will produce:

  $VAR1 = bless( {
                 'transition' => {
                                   'sunny' => {
                                                'sunny' => '0.5',
                                                'rainy' => '0.25'
                                              },
                                   'rainy' => {
                                                'sunny' => '0.5',
                                                'rainy' => '0.5'
                                              },
                                   '###' => {