=head1 NAME

slmprune - prune the back-off language model to a reasonable size

=head1 SYNOPSIS

B<slmprune> I<input_slm> I<result_slm> I<cut_option> I<num>...

=head1 DESCRIPTION

This program uses entropy-based method to prune the size of back-off 
language model 'I<input_slm>' to a specific size and write to 'I<result_slm>'. 

the third parameter I<cut_option> can be [B<R>|B<C>]. It means the following numbers is the number for
(B<R>)eserve or (B<C>)ut. If (B<C>)ut, the num[k] means how many items in level K
would be cut. If (B<R>)eserve, num[k] means how many item would be reserved
in level k. 

Note that we do not ensure that during pruning process,  exactly the
the given number of items are cut or reserved, because some items may 
contains high level children, so could not be cut. 

Also it's your responsiblity to give right number of arguments based
on 'input_slm'.


=head1 NOTE

To get information of the back-off language model, try 'B<slminfo>'.


=head1 AUTHOR

Originally written by Phill.Zhang E<lt>phill.zhang@sun.comE<gt>.
Currently maintained by Kov.Chai E<lt>tchaikov@gmail.comE<gt>.

=head1 SEE ALSO

B<slminfo>(1), B<slmthread>(1).

=for comment
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