brill_trainer.py 文件源码

def _update_tag_positions(self, rule):
        """
        Update _tag_positions to reflect the changes to tags that are
        made by *rule*.
        """
        # Update the tag index.
        for pos in self._positions_by_rule[rule]:
            # Delete the old tag.
            old_tag_positions = self._tag_positions[rule.original_tag]
            old_index = bisect.bisect_left(old_tag_positions, pos)
            del old_tag_positions[old_index]
            # Insert the new tag.
            new_tag_positions = self._tag_positions[rule.replacement_tag]
            bisect.insort_left(new_tag_positions, pos)