returns the backoff weight id . concode_field_sep int which concode_elem_sep int backoffID concode_elem_sep int firstNPlus1GramEntry concode_elem_sep int wordID concode_elem_sep int probabilityID concode_field_sep int getWordID concode_elem_sep int getProbabilityID concode_elem_sep int getFirstNPlus1GramEntry concode_elem_sep int getWhichFollower
int function ( ) { return backoffID ; }