Abstract
This paper proposes a method of acquiring knowledge about the abbreviation possibility of verb phrases. In a certain clause containing a verb and including verb phrases, the proposed method extracts some clauses which contain the same verb and have different case postpositional particles from a large corpus. Then, our method recognizes verb phrases possible to be abbreviated by comparing the verb phrases with the verb phrases contained in the extracted clauses. In our method, the verb phrases containing important piece of information is hard to recognize as being possible to be abbreviated, and the verb phrases containing information which appear in previous sentences is easy to recognize as being possible to be abbreviated. The evaluation of our method by experiments shows that the precision is 78.0% and the recall is 67.9%.We compare our method with the method which recognizes verb phrases possible to be abbreviated by recognizing optional case elements described in a case frame dictionary as being possible to be abbreviated. By the evaluation results, we conclude that our method outperforms the method which recognizes verb phrases possible to be abbreviated by using a case frame dictionary.
