Papers by Junho Han
RECIPE4U: Student-ChatGPT Interaction Dataset in EFL Writing Education (2024.lrec-main)
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| Challenge: | generative AI is expanding in education, yet empirical analyses of large-scale and real-world interactions between students and AI systems remain limited. |
| Approach: | They present a dataset based on a semester-long experiment with 212 college students in English as Foreign Language (EFL) writing courses. |
| Outcome: | The proposed dataset includes conversation logs, students’ intent, students' self-rated satisfaction, and students’ essay edit histories. |
ConvX: A Lightweight Converter to Bridge Indexed Dense Representations and Large Language Models for Retrieval-Augmented Generation (2026.findings-acl)
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| Challenge: | Existing RAG pipelines suffer from critical efficiency limitations due to their complexity and complexity. |
| Approach: | They propose a compression-based RAG framework that directly leverages indexed dense representations produced by a retriever, substituting to long text contexts. |
| Outcome: | Empirical results show that the proposed model achieves competitive performances compared to the state-of-the-art model that uses a large ad-hoc context compressor while offering substantially improved inference efficiency. |