--- title: "Yufei Xu — author profile and papers — Elamur Research" description: "Yufei Xu, Chinese Research Academy of Environmental Sciences: 3 papers on Elamur Research (2025–2026), h-index 18 — affiliations…" canonical: "https://research.elamur.ai/free/en/authors/yufei-xu/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/yufei-xu/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Yufei Xu # Yufei Xu Yufei Xu has 3 papers in our library, in 2025–2026, most of them on [Language models & pretraining](https://md.research.elamur.ai/free/en/topics/language-models/), [Evaluation & benchmarks](https://md.research.elamur.ai/free/en/topics/evaluation-benchmarks/), [Reasoning](https://md.research.elamur.ai/free/en/topics/reasoning/); often with [Xuesong Yao](https://md.research.elamur.ai/free/en/authors/xuesong-yao/), [Zhengyin Du](https://md.research.elamur.ai/free/en/authors/zhengyin-du/), [Jiecao Chen](https://md.research.elamur.ai/free/en/authors/jiecao-chen/). 3 papers in our library · 2025–2026 [OpenAlex](https://openalex.org/A5108682662) · [ORCID](https://orcid.org/0009-0001-9714-9412) · [**h-index 18**](https://openalex.org/authors/A5108682662) · [85 works](https://openalex.org/works?filter=author.id:A5108682662) · [1,278 citations](https://openalex.org/works?filter=author.id:A5108682662&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 3 works in our library](https://md.research.elamur.ai/free/en/authors/yufei-xu/#papers) · [🔗 Cited 21 times in our library](https://md.research.elamur.ai/free/en/authors/yufei-xu/cited-by/) · [⭐ Paper Stars ranking: #9878](https://md.research.elamur.ai/free/en/paper-stars/page/99/#star-9878) 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=Yufei+Xu) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Yufei+Xu) · [dblp](https://dblp.org/search?q=Yufei+Xu) · [ACL Anthology](https://aclanthology.org/search/?q=Yufei+Xu) ## Affiliations [🎓**Chongqing University of Technology** Chongqing · China 2025–2026 · 2 papers*current*](https://ror.org/04vgbd477) · [🤝**Chinese Research Academy of Environmental Sciences** Beijing · China 2026 · 1 paper*current*](https://ror.org/05t8xvx87) · [🎓**Nanjing University of Aeronautics and Astronautics** Nanjing · China 2009–2012 · 11 papers](https://md.research.elamur.ai/free/en/universities/nanjing-university-of-aeronautics-and-astronautics/) · [🎓**Hangzhou Dianzi University** Hangzhou · China 2017–2023 · 7 papers](https://md.research.elamur.ai/free/en/universities/hangzhou-dianzi-university/) · [🎓**Jiangsu University** Zhenjiang · China 2022–2025 · 5 papers](https://ror.org/03jc41j30) · [🎓**Jianghan University** Wuhan · China 2023–2025 · 4 papers](https://ror.org/041c9x778) · [🎓**Beihang University** Beijing · China 2010–2025 · 3 papers](https://md.research.elamur.ai/free/en/universities/beihang-university/) · [🏢**ByteDance** Beijing · China 2025 · 2 papers](https://md.research.elamur.ai/free/en/companies/bytedance/) · [🎓**Liaoning Technical University** Fuxin · China 2024–2025 · 2 papers](https://ror.org/01n2bd587) · [🎓**Sichuan University** Chengdu · China 2022–2025 · 2 papers](https://md.research.elamur.ai/free/en/universities/sichuan-university/) From the bylines of their papers (OpenAlex, 2026-10-14), ORCID and Wikidata; institutions on papers are matched by machine. 19 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 6 The field of science this work belongs to (OpenAlex fields).[Arts and Humanities · 3 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/) · [Computer Science · 3 works](https://md.research.elamur.ai/free/en/shelves/computer-science/) · [Artificial Intelligence · 3 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [Language and Linguistics · 3 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) · [Computer Vision and Pattern Recognition · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/computer-vision-and-pattern-recognition/) · [Information Systems · 1 work](https://md.research.elamur.ai/free/en/shelves/computer-science/information-systems/) 🧭 Topics 3 Research subjects and languages the work is about.[Language models & pretraining · 3 works](https://md.research.elamur.ai/free/en/topics/language-models/) · [Evaluation & benchmarks · 1 work](https://md.research.elamur.ai/free/en/topics/evaluation-benchmarks/) · [Reasoning · 1 work](https://md.research.elamur.ai/free/en/topics/reasoning/) ## Works by year ### 2020s [**2026** 1 paper](https://md.research.elamur.ai/free/en/authors/yufei-xu/year/2026/) · [**2025** 2 papers](https://md.research.elamur.ai/free/en/authors/yufei-xu/year/2025/) ## Papers The most cited first (OpenAlex and our library). 1. **[ToolHop: A Query-Driven Benchmark for Evaluating Large Language Models in Multi-Hop Tool Use](https://md.research.elamur.ai/free/en/papers/ye-2025-toolhop-query-driven-benchmark-evaluating/)** *(2025 · 15 citations)* Benchmarks for LLM tool use rarely test true multi-hop behaviour. Most build datasets tool-first: they gather tools and then synthesize queries for them. Such tools often do not depend on one another, and answers cannot be checked reliably, so evaluation falls back on model-based judging, which carries bias. ToolHop… 2. **[Feedback-Driven Tool-Use Improvements in Large Language Models via Automated Build Environments](https://md.research.elamur.ai/free/en/papers/ye-2026-feedback-driven-tool-use-improvements/)** *(2026 · 6 citations)* Training LLMs to call tools with reinforcement learning is difficult for two reasons. Online APIs make training environments unstable and costly to maintain, and judging trajectories usually requires a strong LLM as evaluator, which brings bias. The authors propose FTRL, which removes both problems. An automated… 3. **[Recitation over Reasoning: How Cutting-Edge Language Models Can Fail on Elementary School-Level Reasoning Problems?](https://md.research.elamur.ai/free/en/papers/yan-2025-recitation-over-reasoning-how-cutting/)** *(2025 · 5 citations)* The paper asks whether frontier LLMs actually reason through simple problems or mostly reproduce memorized solution templates. ## Co-authors here 11 co-authors with a page, the most papers together first. - [Xuesong Yao](https://md.research.elamur.ai/free/en/authors/xuesong-yao/) ×3 - [Zhengyin Du](https://md.research.elamur.ai/free/en/authors/zhengyin-du/) ×3 - [Jiecao Chen](https://md.research.elamur.ai/free/en/authors/jiecao-chen/) ×2 - [Junjie Ye](https://md.research.elamur.ai/free/en/authors/junjie-ye/) ×2 - [Qi Zhang](https://md.research.elamur.ai/free/en/authors/qi-zhang/) ×2 - [Tao Gui](https://md.research.elamur.ai/free/en/authors/tao-gui/) ×2 - [Zhiheng Xi](https://md.research.elamur.ai/free/en/authors/zhiheng-xi/) ×2 - [Siyu Yuan](https://md.research.elamur.ai/free/en/authors/siyu-yuan/) - [Xiaoran Fan](https://md.research.elamur.ai/free/en/authors/xiaoran-fan/) - [Xuanjing Huang](https://md.research.elamur.ai/free/en/authors/xuanjing-huang/) - [Zehui Chen](https://md.research.elamur.ai/free/en/authors/zehui-chen/) ## 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/) - [Findings of the Association for Computational Linguistics](https://md.research.elamur.ai/free/en/venues/findings/): [Findings of the Association for Computational Linguistics 2026](https://md.research.elamur.ai/free/en/venues/findings/2026/) - [International Joint Conference on Natural Language Processing (IJCNLP)](https://md.research.elamur.ai/free/en/venues/ijcnlp/): [IJCNLP 2025](https://md.research.elamur.ai/free/en/venues/ijcnlp/2025/) ## Cited by Papers of our library cite their works 21 times (of the 149,439 papers whose bibliographies we read); [9 citing papers with a page here →](https://md.research.elamur.ai/free/en/authors/yufei-xu/cited-by/). Updated 1 November 2026