サ変動詞の活用のゆれについて・続 : 大規模な電子資料の利用による分析の精密化

大阪大学Osaka Universityこの数年来,コーパスに基づく日本語研究を取り巻く環境は急速な進展を見せている。利用可能な電子資料の面で言えば,広義コーパス・狭義コーパスともに選択の幅が広がりつつある。この小論では,最近利用可能になった2種類の大規模な電子資料－国会会議録のデータと,筆者の試作した巨大なWebコーパス－を用いて一字漢語複合サ変動詞の活用のゆれの問題の主要部分を調査・分析する。この問題については過去の拙論で朝日新聞6年分の記事データに基づく分析を行ったことがあるが,そのときには確かめようのなかった活用のゆれの通時変化の様相を観察することができるとともに,筆者が「属する」類と呼んだ一群の動詞については五段活用化の進行の程度に基づく下位分類をさらに精密化することができることを示す。The morphological changes of compound sahen-verbs with a one-letter sino-word stem are re-analyzed based on two kinds of electronic texts of large size. In the first half of this paper, the results of an analysis of the verbs of the zoku-suru group based upon the texts of Kokkai Kaigiroku, the minutes of the National Diet of Japan, are described. It was found that, using the Kokkai Kaigiroku data, we may observe the way the morphological change of the zoku-suru group proceeded during the past sixty years. We were also enabled to make the author\u27s previous synchronic analysis of the zoku-suru verbs more precise and make a three-way, rather than two-way, distinction among the verbs of the zoku-suru group according to the degree of morphological change. In addition, the results of an analysis of the verbs belonging to the sin-zuru group are also discussed briefly. In the second half of this paper, the morphological changes of the zoku-suru group are analyzed using a huge Web corpus, which was created by the author recently. Using this, we were able to observe the differences in the degree of morphological change of individual verbs even more precisely, thus finding a four-way distinction among the verbs of the zoku-suru group