13.10.3 Use

HLSTATS is invoked by the command line

   HLStats [options] hmmList labFiles ....

The hmmList should contain a list of all the labels (ie model names) used in the following label files for which statistics are required. Any labels not appearing in the list are ignored and assumed to be out-of-vocabulary. The list of labels is specified in the same way as for a HMM list (see HMODEL) and the logical physical mapping is preserved to allow statistics to be collected about physical names as well as logical ones. The labFiles may be master label files. The available options are

-b fn
Compute bigram statistics and store result in the file fn.

-c N
Count the number of occurrences of each logical model listed in the hmmList and on completion list all models for which there are N or less occurrences.

-d
Compute minimum, maximum and average duration statistics for each label.

-f f
Set the matrix bigram floor probability to f (default value 0.0). This option should be used in conjunction with the -b option.

-h N
Set the bigram hashtable size to medium(N=1) or large (N=2). This option should be used in conjunction with the -b option. The default is small(N=0).

-l fn
Output a list of covering labels to file fn. Only labels occurring in the labList are counted (others are assumed to be out-of-vocabulary). However, this list may contain labels that do not occur in any of the label files. The list of labels written to fn will however contain only those labels which occur at least once.

-o
Produce backed-off bigrams rather than matrix ones. These are output in the standard ARPA/MIT-LL textual format.

-p N
Count the number of occurrences of each physical model listed in the hmmList and on completion list all models for which there are N or less occurrences.

-s st en
Set the sentence start and end labels to st and en. (Default !ENTER and !EXIT).

-t n
Set the threshold count for including a bigram in a backed-off bigram language model. This option should be used in conjunction with the -b and -o options.

-u f
Set the unigram floor probability to f when constructing a back-off bigram language model. This option should be used in conjunction with the -b and -o options.
-G fmt
Set the label file format to fmt.
-I mlf
This loads the master label file mlf. This option may be repeated to load several MLFs.
-X ext
Set label file extension to ext (default is lab).

HLSTATS also supports the standard options -A, -C, -D, -S, -T, and -V as described in section 4.4.