Identifying the Genre of a Text through a Multivariate Analysis of the Use of Compound Verbs, and the Application of This to Technical Japanese Education

本研究的目的是：(1)选择在不同领域的学术或专业论文中常用的复合动词；(2)证明可以用(1)中提到的复合动词作为索引来识别说明文的类型。因此，本研究将有助于建立有效的日语习得教学方法的知识体系，特别是对专业词汇教学方法的改进。为了实现这一目标，我们选择了来自三种体裁的395个文本样本作为数据，这三种体裁分别是：(1)来自五个学术来源的说明文：来自《科学技术》的论文；日本物理学会期刊的论文；日本文学论文；经济学论文；以及教学经济学教科书；(2)现当代小说；(3)四家主要报纸的社论文章。对从每个样本中选出的41个复合动词的第二个动词的出现频率（每句）进行统计，并通过典型判别分析对所得的395个样本进行分析。从这些结果中发现，通过使用15个动词，可以正确地将文本分类为各自的类型，识别率为67.1%。结果还表明，复合动词在说明文中的使用比在小说和社论文章中的使用要少。结果进一步表明，在说明文中，日本文学论文中复合动词的出现频率最高。研究还发现，这种体裁包含了最多样化的复合动词。虽然数据有限，但本研究的发现清楚地表明，复合动词的第二动词可以作为多元分析中的一个指标。

The aim of this study is to (1) select compound verbs that are commonly used in academic or specialized papers in different fields; and (2) to demonstrate that it is possible to identify a genre of expository writings by using the compound verbs mentioned in (1) as an index. In so doing, this study is expected to contribute to the body of knowledge on effective teaching methods for Japanese language acquisition, especially to the improvement of teaching methods for specialized lexicon.As a step toward achieving this goal, 395 text samples from three genres were chosen as data Those three genres were: (1) expository writings from five academic sources: papers from Science and Technology; papers from the Journal of the Physical Society of Japan; papers from Japanese Literature; papers from Economics; and pedagogical economics textbooks; (2) modern and contemporary novels; and (3) editorial articles from four major newspapers.The frequencies of occurrences (per sentence) of the 41 selected second verbs of the compound verbs from each sample were tallied and the resultant 395 samples were analyzed through Canonical Discriminant Analysis. From these results, it was found that texts could be classified into their respective genres correctly, at a discriminant rate of 67.1%, by using 15 verbs. The results also showed that compound verbs are less used in the genre of expository writings than in novels and editorial articles. The results further demonstrated that among expository writings, papers from Japanese Literature contained the highest frequencies of occurrences of compound verbs. It was also found that this genre encompasses the most diverse range of compound verbs.Although the data was limited, the findings of this study clearly demonstrate that the second verbs of compound verbs can be employed as an index within Multivariate Analysis.