| Asia Pacific Journal of Corpus Research Vol. 6, No. 2, pp. 1-14 |
| Abbreviation: APJCR |
| e-ISSN: 2733-8096 |
| Publication date: 31 December 2025 |
| Received: 18 September 2025 / Received in Revised Form: 9 December 2025 / Accepted: 23 August 2025 |
| DOI: https://doi.org/10.22925/apjcr.2025.6.2.1
|
VACSR Version 4: Enhancing a CEFR-J-Based Vocabulary Self-Reflection Tool for Multilingual and Foreign Language Education |
| Yukiko Ohashi (Yamazaki University of Animal Health Technology), JAPAN |
| Copyright 2025 APJCR This is an open access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted, distribution, and reproduction in any medium, provided the original work is properly cited. |
Abstract |
| This study introduces VACSR v.4.0, an updated version of the Vocabulary Analyzer for Self-Reflection. The tool automatically analyzes vocabulary occurrences and CEFR-J levels in transcribed texts, providing information on usage frequency, unused items, and tokens not classified within CEFR-J scales. VACSR v.4.0 incorporates syntactic parsing using the Stanza library, enabling the system to distinguish parts of speech and categorize identical lexical items according to their grammatical functions. The updated version also adds the automatic display of top headwords, a feature not included in previous versions, and extends its processing capability to tokens containing diacritical marks, such as ê and û, found in other languages. The study aims to explore how VACSR v.4.0 functions with languages other than English through a pilot analysis using two French texts containing vocabulary with diacritical marks. Although the system does not yet provide linguistically accurate POS tagging or CEFR-based level assignments for French, it can still extract high-frequency vocabulary and generate meaningful frequency-based lists. These findings show that, even without full multilingual NLP integration, VACSR v.4.0 helps compile core vocabulary lists across different languages and offers preliminary insights for pedagogical decision-making in foreign-language learning contexts. |
Keywords |
| Corpus Linguistics, French Vocabulary, CEFR-J, Vocabulary, Language Education |
References |
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The Authors |
| Yukiko Ohashi is a professor at Yamazaki University of Animal Health Technology. She earned her PhD in literature in 2014. Her principal research lies in corpus linguistics. She has published several articles on aspects of language learning, in particular corpus compilation. |
The Authors’ Address |
| First and Corresponding Author Yukiko Ohashi Professor Yamazaki University of Animal Health Technology 4-7-2 Minami-Osawa, Hachioji, Tokyo 192-0364, JAPAN Email: y_watanabe@yamazaki.ac.jp  |
