--- title: "Puyang Xu · Duke University — author profile and papers" description: "Puyang Xu, Duke University: 2 papers on Elamur Research (2018–2025), h-index 12 — affiliations, topics, co-authors and who cites them in…" canonical: "https://research.elamur.ai/free/en/authors/puyang-xu/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/puyang-xu/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Puyang Xu # Puyang Xu Puyang Xu has 2 papers in our library, in 2018–2025, most of them on [Dialogue systems](https://md.research.elamur.ai/free/en/topics/dialogue-systems/); often with [Bing Yin](https://md.research.elamur.ai/free/en/authors/bing-yin/), [Changlong Yu](https://md.research.elamur.ai/free/en/authors/changlong-yu/), [Chao Zhang](https://md.research.elamur.ai/free/en/authors/chao-zhang/). 2 papers in our library · 2018–2025 [OpenAlex](https://openalex.org/A5113753678) · [**h-index 12**](https://openalex.org/authors/A5113753678) · [31 works](https://openalex.org/works?filter=author.id:A5113753678) · [870 citations](https://openalex.org/works?filter=author.id:A5113753678&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 2 works in our library](https://md.research.elamur.ai/free/en/authors/puyang-xu/#papers) · [🔗 Cited 83 times in our library](https://md.research.elamur.ai/free/en/authors/puyang-xu/cited-by/) · [⭐ Paper Stars ranking: #5485](https://md.research.elamur.ai/free/en/paper-stars/page/55/#star-5485) 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=Puyang+Xu) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Puyang+Xu) · [dblp](https://dblp.org/search?q=Puyang+Xu) · [ACL Anthology](https://aclanthology.org/search/?q=Puyang+Xu) ## Affiliations [🎓**Duke University** Durham · United States 2025 · 2 papers*current*](https://md.research.elamur.ai/free/en/universities/duke-university/) · [🎓**University of Virginia** Charlottesville · United States 2025 · 2 papers*current*](https://md.research.elamur.ai/free/en/universities/university-of-virginia/) · [🎓**Johns Hopkins University** Baltimore · United States 2009–2011 · 4 papers](https://md.research.elamur.ai/free/en/universities/johns-hopkins-university/) · [🏢**Amazon** Seattle · United States 2022–2023 · 2 papers](https://md.research.elamur.ai/free/en/companies/amazon/) · [🏢**Microsoft** Redmond · United States 2013–2014 · 2 papers](https://md.research.elamur.ai/free/en/companies/microsoft/) From the bylines of their papers (OpenAlex, 2026-10-14), ORCID and Wikidata; institutions on papers are matched by machine. 1 more institution on single bylines are not listed. ## Fields, topics and concepts Of its works in our library, with the number of works on each. 📚 Shelves 5 The field of science this work belongs to (OpenAlex fields).[Arts and Humanities · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/) · [Computer Science · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/) · [Artificial Intelligence · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [Language and Linguistics · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) · [Information Systems · 1 work](https://md.research.elamur.ai/free/en/shelves/computer-science/information-systems/) 🧭 Topics 1 Research subjects and languages the work is about.[Dialogue systems · 1 work](https://md.research.elamur.ai/free/en/topics/dialogue-systems/) ## Works by year ### 2020s [**2025** 1 paper](https://md.research.elamur.ai/free/en/authors/puyang-xu/year/2025/) ### 2010s [**2018** 1 paper](https://md.research.elamur.ai/free/en/authors/puyang-xu/year/2018/) ## Papers The most cited first (OpenAlex and our library). 1. **[An End-to-end Approach for Handling Unknown Slot Values in Dialogue State Tracking](https://md.research.elamur.ai/free/en/papers/xu-2018-end-end-approach-handling-unknown/)** *(2018 · 187 citations)* Most dialogue state trackers assume a fixed ontology that lists every value a slot can take. In industrial settings this list is often unavailable, very large, or constantly changing. End-to-end trackers that work without an SLU module therefore cannot output values they have never been told about. Xu and Hu address… 2. **[WebAgent-R1: Training Web Agents via End-to-End Multi-Turn Reinforcement Learning](https://md.research.elamur.ai/free/en/papers/wei-2025-webagent-r1-training-web-agents/)** *(2025 · 36 citations)* Reinforcement learning has improved LLMs mostly on single-turn problems like math. Web agents are harder to train this way: they must make long sequences of decisions on changing pages, and earlier RL approaches for this setting depended on offline or off-policy pipelines with extra components. WebAgent-R1 is a… ## Co-authors here 10 co-authors with a page, the most papers together first. - [Bing Yin](https://md.research.elamur.ai/free/en/authors/bing-yin/) - [Changlong Yu](https://md.research.elamur.ai/free/en/authors/changlong-yu/) - [Chao Zhang](https://md.research.elamur.ai/free/en/authors/chao-zhang/) - [Liang Qiu](https://md.research.elamur.ai/free/en/authors/liang-qiu/) - [Lihong Li](https://md.research.elamur.ai/free/en/authors/lihong-li/) - [Qi Hu](https://md.research.elamur.ai/free/en/authors/qi-hu/) - [Qin Lu](https://md.research.elamur.ai/free/en/authors/qin-lu/) - [Weizhi Zhang](https://md.research.elamur.ai/free/en/authors/weizhi-zhang/) - [Wenlin Yao](https://md.research.elamur.ai/free/en/authors/wenlin-yao/) - [Zhepei Wei](https://md.research.elamur.ai/free/en/authors/zhepei-wei/) ## 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 2018](https://md.research.elamur.ai/free/en/venues/acl/2018/) - [Conference on Empirical Methods in Natural Language Processing (EMNLP)](https://md.research.elamur.ai/free/en/venues/emnlp/): [EMNLP 2025](https://md.research.elamur.ai/free/en/venues/emnlp/2025/) ## Cited by Papers of our library cite their works 83 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/puyang-xu/cited-by/). Updated 30 October 2026