Exploration of heuristic research methods based on large-scale diachronic corpora

2017 Fiscal Year Final Research Report

• Project/Area Number: 26370516
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Linguistics
• Research Institution: Doshisha Women's College of Liberal Arts
• Principal Investigator: Hattori Tadasu 同志社女子大学, 表象文化学部, 教授 (40228490)
• Project Period (FY): 2014-04-01 – 2018-03-31
• Keywords: コーパス / 経年変化

Outline of Final Research Achievements

1 Explorations of new methods in corpus-based diachronic research: I proposed a new method of analyzing diachronic changes in verbal case markings. Based on the occurrence patterns of Sino-Japanese sahen verbs in the Japanese Diet minutes, many verbs show case marking shifts from dative to accusative or vice versa. I gave a description of the history of usages of the noun kanousei and the auxiliary -te gozaimasu on the basis of observed changes in the Ngram frequency ranking and the distribution of grammatical patterns.
2 Building an environment for using new diachronic corpora, and an examination of their utilizability: I extracted texts from the Imperial Diet minutes and the Documents on Japanese Foreign Policy and examined their utilizability for diachronic linguistic research. I found that, while insufficient for strict statistical analysis, they can be used for finding the period of occurrence/nonoccurrence of a specific expression.

Free Research Field

言語学・日本語学