マ シケン   MA Tzuhsuan   麻　子軒    所属   京都外国語大学  外国語学部 日本語学科    職種   講師
発表年月日	2026/09
発表テーマ	Expansion of Japanese Topic-Oritend Conversation Corpus
会議名	The 6th Asia Pacific Corpus Linguistics Conference（APCLC2026）
学会区分	国際学会
発表形式	口頭（一般）
単独共同区分	共同
国名	日本
開催地名	富山
発表者・共同発表者	◎Naoki Nakamata, Tzuhsuan Ma
概要	This presentation introduces the expansion of the Japanese Topic-Oriented Conversation Corpus (J-TOCC). While the first phase focused on 15 everyday topics, the second phase adds 16 SDG-related topics. In each topic, the same pairs of participants engaged in five-minute conversations, allowing topic-based differences to be examined while controlling for speaker variation. Together, the corpus now contains about 310 hours of conversation and approximately four million words. In addition to transcripts, it provides short-unit and long-unit morphological analyses, search code, and participant metadata such as topic familiarity and estimated vocabulary size. The corpus also offers topic-specific keyword lists based on log-likelihood ratios, providing valuable data for research on Japanese conversation, discourse, and language education.