Derivational Grammar Approach to Morphological Analysis of Japanese Sentences

摘要

In this paper, we propose a new simple Japanese morphological analysis system named MAJO. The systems which have been proposed so far are quite complicated in order to deal with conjugations of verbs and adjectives. On the other hand, it is known that the deriva- tional grammar, which does not use the concept of conjugations, makes morphological analysis simple. Although there are some literatures on the application of the derivational grammar to Japanese morphological analysis, all of them has modified their grammar to utilize existing systems. MAJO is constructed directly from the derivational grammar, so that it has less grammar rules than the previous systems. We have evaluated its performance on the EDR corpus and 8ucceeded with 98.1/100 ratio.