I'm an M.S. student in the Interdisciplinary Program in Artificial Intelligence at Seoul National University, advised by Prof. Sungroh Yoon. I work on speech-language models for natural spoken interaction: real-time, human-like voice agents that can coordinate, interrupt, and keep a conversation going the way people do.

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HEAR Who Said What: Unlocking Speaker-Attributed Reasoning via Counterfactual Voice Grounding
Dongwook Lee, Sangkwon Park, Eunwoo Song, Che Hyun Lee, Youngho Cho, Junho Kim, June Young Yi, Heeseung Kim, Sungroh Yoon
EMNLP 2026 · arXiv · Project · Code · Data · Model
_{Do speech language models actually tell voices apart, or do they just go by the words?}

NaturalFlow: Reducing Disruptive Pauses for Natural Speech Flow in Simultaneous Speech-to-Speech Translation
Dongwook Lee*, Youngho Cho*, Sangkwon Park, Heeseung Kim, Sungroh Yoon
Interspeech 2026, Oral · arXiv · Project
_{There is never only one way to say the same thing. Can we use that freedom to translate as you speak, without the choppiness?}

Still Between Us? Evaluating and Improving Voice Assistant Robustness to Third-Party Interruptions
Dongwook Lee, Eunwoo Song, Che Hyun Lee, Heeseung Kim, Sungroh Yoon
ACL 2026 · ACL Anthology · arXiv · Project
_{What happens when someone nearby tries to hijack the conversation?}

Compositional Conservatism: A Transductive Approach in Offline Reinforcement Learning
Yeda Song*, Dongwook Lee*, Gunhee Kim
ICLR 2024 · OpenReview · arXiv · Code
_{Can offline RL generalize to unseen states by reusing the pieces of states it has already seen?}

_{* equal contribution}

• HEAR: run 23 speech language models on your own audio task through one interface (vLLM, transformers, and API backends behind a single JSONL contract). Ships the HEAR speaker-attribution benchmark.
• arxiv2notion: a daily arXiv tracker that filters new papers by your research topics, summarizes them with Gemini, and files them into Notion.

• 2026 – now · M.S. student, Interdisciplinary Program in AI, Seoul National University (DSAIL)
• 2026 · Teaching Assistant, Samsung AI Expert: Speech AI
• 2025 · Research intern, Vision & Learning Lab, Seoul National University (reinforcement learning)
• 2016 – 2024 · B.S. in Computer Science and B.S. in Naval Architecture & Ocean Engineering, Seoul National University
• 2022 – 2023 · Exchange student, College of Engineering, Peking University

🗣️ Korean (native) · English (fluent) · Mandarin (fluent)