Automatic Knowledge Acquisition for Case Alternation between the Passive and Active Voices in Japanese

要旨

We present a method for automatically acquiring knowledge for case alternation between the passive and active voices in Japanese.By leveraging several linguistic constraints on alternation patterns and lexical case frames obtained from a large Web corpus, our method aligns a case frame in the passive voice to a corresponding case frame in the active voice and finds an alignment between their cases.We then apply the acquired knowledge to a case alternation task and prove its usefulness.Case Frame: "-4 (be pushed down-4)" { (woman):5, (I):2, (woman):2, }-ga { (sea):229, (bottom):115, (pond):51, }-ni { (stepmother):2, (Pegasus):2, }-niyotte Case Frame: "-5 (be pushed down-5)" { (Kyoko):3, (manager):1, }-ga { (someone):143, (somebody):85, }-ni { (stair):20, (ship):7, (cliff):7, }-kara Case Frame: "-2 (push down-2)" { (man):14, (lion):5, (tiger):3, }-ga { (child):316, (child):81, (person):51, }-wo

主題