--- title: "Hyunwoo Ko · Yonsei University — author profile and papers" description: "Hyunwoo Ko, Yonsei University: 3 papers on Elamur Research (2024–2025), h-index 3 — affiliations, topics, co-authors and who cites them…" canonical: "https://research.elamur.ai/free/en/authors/hyunwoo-ko/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/hyunwoo-ko/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Hyunwoo Ko # Hyunwoo Ko Hyunwoo Ko has 3 papers in our library, in 2024–2025, most of them on [Multilingual & cross-lingual NLP](https://md.research.elamur.ai/free/en/topics/multilingual-nlp/), [Reasoning](https://md.research.elamur.ai/free/en/topics/reasoning/), [Language models & pretraining](https://md.research.elamur.ai/free/en/topics/language-models/); often with [Guijin Son](https://md.research.elamur.ai/free/en/authors/guijin-son/), [Hitesh Laxmichand Patel](https://md.research.elamur.ai/free/en/authors/hitesh-laxmichand-patel/), [James Thorne](https://md.research.elamur.ai/free/en/authors/james-thorne/). 3 papers in our library · 2024–2025 [OpenAlex](https://openalex.org/A5088036513) · [**h-index 3**](https://openalex.org/authors/A5088036513) · [19 works](https://openalex.org/works?filter=author.id:A5088036513) · [67 citations](https://openalex.org/works?filter=author.id:A5088036513&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 3 works in our library](https://md.research.elamur.ai/free/en/authors/hyunwoo-ko/#papers) · [🔗 Cited 67 times in our library](https://md.research.elamur.ai/free/en/authors/hyunwoo-ko/cited-by/) · [2 more in our library without a page yet](#also) · [⭐ Paper Stars ranking: #8819](https://md.research.elamur.ai/free/en/paper-stars/page/89/#star-8819) The profile is the library's match of the name; two people with one name are not always told apart. Elsewhere: [Google Scholar](https://scholar.google.com/citations?view_op=search_authors&mauthors=Hyunwoo+Ko) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Hyunwoo+Ko) · [dblp](https://dblp.org/search?q=Hyunwoo+Ko) · [ACL Anthology](https://aclanthology.org/search/?q=Hyunwoo+Ko) ## Affiliations [🎓**Yonsei University** Seoul · South Korea 2025–2026 · 2 papers*current*](https://md.research.elamur.ai/free/en/universities/yonsei-university/) From the bylines of their papers (OpenAlex, 2026-10-14), ORCID and Wikidata; institutions on papers are matched by machine. 3 more institutions on single bylines are not listed. ## Fields, topics and concepts Of its works in our library, with the number of works on each. 📚 Shelves 10 The field of science this work belongs to (OpenAlex fields).[Computer Science · 3 works](https://md.research.elamur.ai/free/en/shelves/computer-science/) · [Arts and Humanities · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/) · [Artificial Intelligence · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [Computer Vision and Pattern Recognition · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/computer-vision-and-pattern-recognition/) · [Language and Linguistics · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) · [Applied Mathematics · 1 work](https://md.research.elamur.ai/free/en/shelves/mathematics/applied-mathematics/) · [Decision Sciences · 1 work](https://md.research.elamur.ai/free/en/shelves/decision-sciences/) · [Information Systems · 1 work](https://md.research.elamur.ai/free/en/shelves/computer-science/information-systems/) · [Management Science and Operations Research · 1 work](https://md.research.elamur.ai/free/en/shelves/decision-sciences/management-science-and-operations-research/) · [Mathematics · 1 work](https://md.research.elamur.ai/free/en/shelves/mathematics/) 🧭 Topics 3 Research subjects and languages the work is about.[Language models & pretraining · 1 work](https://md.research.elamur.ai/free/en/topics/language-models/) · [Multilingual & cross-lingual NLP · 2 works](https://md.research.elamur.ai/free/en/topics/multilingual-nlp/) · [Reasoning · 2 works](https://md.research.elamur.ai/free/en/topics/reasoning/) ## Works by year ### 2020s [**2025** 2 papers](https://md.research.elamur.ai/free/en/authors/hyunwoo-ko/year/2025/) · [**2024** 1 paper](https://md.research.elamur.ai/free/en/authors/hyunwoo-ko/year/2024/) ## Papers The most cited first (OpenAlex and our library). 1. **[LLM-as-a-Judge & Reward Model: What They Can and Cannot Do](https://md.research.elamur.ai/free/en/papers/son-2024-llm-judge-reward-model-they/)** *(2024 · 27 citations)* Automated evaluators, meaning LLM-as-a-Judge setups and reward models (RMs), increasingly replace human raters when scoring long-form LLM outputs and guiding RL-based alignment. 2. **[Linguistic Generalizability of Test-Time Scaling in Mathematical Reasoning](https://md.research.elamur.ai/free/en/papers/son-2025-linguistic-generalizability-test-time-scaling/)** *(2025 · 24 citations)* The paper asks whether test-time scaling methods, which spend extra compute at inference, help mathematical reasoning across many languages as they do in English. 3. **[Pushing on Multilingual Reasoning Models with Language-Mixed Chain-of-Thought](https://md.research.elamur.ai/free/en/papers/son-2025-pushing-multilingual-reasoning-models-language/)** *(2025 · 7 citations)* Most open work on distilling long chain-of-thought reasoning into smaller models targets English or Chinese. ## All works 5 works of theirs in our library, the most cited first; 3 with a page here, the others link their original until we summarise them. 1. [**LLM-as-a-Judge & Reward Model: What They Can and Cannot Do arXiv:2409.11239**Guijin Son, Hyunwoo Ko, Hoyoung Lee, et al.*2024 · 27 citations*](https://md.research.elamur.ai/free/en/papers/son-2024-llm-judge-reward-model-they/) 2. **[Linguistic Generalizability of Test-Time Scaling in Mathematical Reasoning](https://md.research.elamur.ai/free/en/papers/son-2025-linguistic-generalizability-test-time-scaling/) [Annual Meeting of the Association for Computational Linguistics (ACL)](https://md.research.elamur.ai/free/en/venues/acl/)**Guijin Son, Jiwoo Hong, Hyunwoo Ko, et al.*2025 · 24 citations* 3. **[When AI Co-Scientists Fail: SPOT-a Benchmark for Automated Verification of Scientific Research ↗](https://arxiv.org/abs/2505.11855) arXiv:2505.11855 · no summary yet**Guijin Son et al.*2025 · 13 citations* 4. [**Pushing on Multilingual Reasoning Models with Language-Mixed Chain-of-Thought arXiv:2510.04230**Guijin Son, Donghun Yang, Hitesh Laxmichand Patel, et al.*2025 · 7 citations*](https://md.research.elamur.ai/free/en/papers/son-2025-pushing-multilingual-reasoning-models-language/) 5. **[Soohak: A Mathematician-Curated Benchmark for Evaluating Research-level Math Capabilities of LLMs ↗](https://arxiv.org/abs/2605.09063) arXiv:2605.09063 · no summary yet**Guijin Son et al.*2026 · 1 citation* ## Co-authors here 6 co-authors with a page, the most papers together first. - [Guijin Son](https://md.research.elamur.ai/free/en/authors/guijin-son/) ×3 - [Hitesh Laxmichand Patel](https://md.research.elamur.ai/free/en/authors/hitesh-laxmichand-patel/) - [James Thorne](https://md.research.elamur.ai/free/en/authors/james-thorne/) - [Jiwoo Hong](https://md.research.elamur.ai/free/en/authors/jiwoo-hong/) - [Yewon Kim](https://md.research.elamur.ai/free/en/authors/yewon-kim/) - [Youngjae Yu](https://md.research.elamur.ai/free/en/authors/youngjae-yu/) ## Venues Where their works here were published, the most works first, with the editions of those that have a page. - [Annual Meeting of the Association for Computational Linguistics (ACL)](https://md.research.elamur.ai/free/en/venues/acl/): [ACL 2025](https://md.research.elamur.ai/free/en/venues/acl/2025/) ## Cited by Papers of our library cite their works 67 times (of the 149,439 papers whose bibliographies we read); [19 citing papers with a page here →](https://md.research.elamur.ai/free/en/authors/hyunwoo-ko/cited-by/). Updated 1 November 2026