slmthread - threads the language model

       Originally written by Phill.Zhang <phill.zhang@sun.com>.  Currently maintained by Kov.Chai
       <tchaikov@gmail.com>.

slmthread add back-off-state for each slm node in the primitive_slm.  Also it compresses 32-bit float
       into 16 bit representation. These processing speeds up the looking up.

       The primitive_slm is always generated by slmprune. And the threaded_slm can be used to feed slmseg as a
       reference to segment Chinese text.

       slmthread - threads the language model

slmprune(1), slmseg(1).

perl v5.36.0                                       2023-08-08                                       SLMTHREAD(1)

slmthreadprimitive_slmthreaded_slm