... distinguishingbetween one -word, two -word, and multiple -word phrases as follows: Each one -word phrase with tagT simply receives the label T , instead of T -T . Two- word phrases with tag sequence ... Since consecutivewords within a rule stem from consecutive words inthe training corpus and thus are already consistent,the boundary word tags are more informative thantags of words between the ... bycombining the tag of the target phrase’s left-most word with the tag of its right-most word. The creation of complex rules based on all initial rules obtained from the current sentence now pro-ceeds...