--- title: "Winnie Xu — author profile and papers — Elamur Research" description: "Winnie Xu, Columbia University Irving Medical Center: 2 papers on Elamur Research (2022–2025), h-index 8 — affiliations, topics, co-authors…" canonical: "https://research.elamur.ai/free/en/authors/winnie-xu/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/winnie-xu/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Winnie Xu # Winnie Xu Winnie Xu has 2 papers in our library, in 2022–2025, most of them on [Language models & pretraining](https://md.research.elamur.ai/free/en/topics/language-models/); often with [Aitor Lewkowycz](https://md.research.elamur.ai/free/en/authors/aitor-lewkowycz/), [Amanpreet Singh](https://md.research.elamur.ai/free/en/authors/amanpreet-singh/), [Charles Sutton](https://md.research.elamur.ai/free/en/authors/charles-sutton/). 2 papers in our library · 2022–2025 [OpenAlex](https://openalex.org/A5028046389) · [ORCID](https://orcid.org/0000-0002-5810-0851) · [**h-index 8**](https://openalex.org/authors/A5028046389) · [31 works](https://openalex.org/works?filter=author.id:A5028046389) · [205 citations](https://openalex.org/works?filter=author.id:A5028046389&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 2 works in our library](https://md.research.elamur.ai/free/en/authors/winnie-xu/#papers) · [🔗 Cited 85 times in our library](https://md.research.elamur.ai/free/en/authors/winnie-xu/cited-by/) · [1 more in our library without a page yet](#also) · [⭐ Paper Stars ranking: #7765](https://md.research.elamur.ai/free/en/paper-stars/page/78/#star-7765) 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=Winnie+Xu) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Winnie+Xu) · [dblp](https://dblp.org/search?q=Winnie+Xu) · [ACL Anthology](https://aclanthology.org/search/?q=Winnie+Xu) ## Affiliations [🏥**Columbia University Irving Medical Center** New York · United States 2023–2024 · 4 papers*current*](https://ror.org/01esghr10) · [🎓**Columbia University** New York · United States 2024 · 1 paper*current*](https://md.research.elamur.ai/free/en/universities/columbia-university/) · [🏥**Children's Hospital of Fudan University** Shanghai · China 2020 · 10 papers](https://ror.org/05n13be63) · [🎓**Fudan University** Shanghai · China 2020 · 10 papers](https://md.research.elamur.ai/free/en/universities/fudan-university/) · [🎓**University of Toronto** Toronto · Canada 2021–2022 · 5 papers](https://md.research.elamur.ai/free/en/universities/university-of-toronto/) · [🎓**University of Pennsylvania** Philadelphia · United States 2021–2023 · 4 papers](https://md.research.elamur.ai/free/en/universities/university-of-pennsylvania/) · [🏢**Cohere** San Francisco · United States 2021–2022 · 2 papers](https://md.research.elamur.ai/free/en/companies/cohere/) 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 4 The field of science this work belongs to (OpenAlex fields).[Artificial Intelligence · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [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/) · [Language and Linguistics · 2 works](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) 🧭 Topics 1 Research subjects and languages the work is about.[Language models & pretraining · 1 work](https://md.research.elamur.ai/free/en/topics/language-models/) ## Works by year ### 2020s [**2025** 1 paper](https://md.research.elamur.ai/free/en/authors/winnie-xu/year/2025/) · [**2022** 1 paper](https://md.research.elamur.ai/free/en/authors/winnie-xu/year/2022/) ## Papers The most cited first (OpenAlex and our library). 1. **[Language Model Cascades](https://md.research.elamur.ai/free/en/papers/dohan-2022-language-model-cascades/)** *(2022 · 89 citations)* The paper addresses how to reason about the many ad hoc ways large language models are chained or repeatedly queried. 2. **[Anchored Preference Optimization and Contrastive Revisions: Addressing Underspecification in Alignment](https://md.research.elamur.ai/free/en/papers/oosterlinck-2025-anchored-preference-optimization-contrastive-revisions/)** *(2025 · 20 citations)* The authors argue that preference-based alignment of LLMs is underspecified in two ways. First, the winning and losing responses in a preference pair often differ in many irrelevant aspects, which blurs what the model should learn. Second, standard contrastive objectives do not consider whether the target model is… ## All works 3 works of theirs in our library, the most cited first; 2 with a page here, the others link their original until we summarise them. 1. [**Language Model Cascades arXiv:2207.10342**David Dohan, Winnie Xu, Aitor Lewkowycz, et al.*2022 · 89 citations*](https://md.research.elamur.ai/free/en/papers/dohan-2022-language-model-cascades/) 2. **[Anchored Preference Optimization and Contrastive Revisions: Addressing Underspecification in Alignment](https://md.research.elamur.ai/free/en/papers/oosterlinck-2025-anchored-preference-optimization-contrastive-revisions/) [Transactions of the Association for Computational Linguistics (TACL)](https://md.research.elamur.ai/free/en/venues/tacl/)**Karel D'Oosterlinck, Winnie Xu, Chris Develder, et al.*2025 · 20 citations* 3. **[Deep Latent State Space Models for Time-Series Generation ↗](https://arxiv.org/abs/2212.12749) arXiv (Cornell University) · no summary yet**Linqi Zhou et al.*2022 · 4 citations* ## Co-authors here 12 of 16 co-authors with a page, the most papers together first. - [Aitor Lewkowycz](https://md.research.elamur.ai/free/en/authors/aitor-lewkowycz/) - [Amanpreet Singh](https://md.research.elamur.ai/free/en/authors/amanpreet-singh/) - [Charles Sutton](https://md.research.elamur.ai/free/en/authors/charles-sutton/) - [Chris Develder](https://md.research.elamur.ai/free/en/authors/chris-develder/) - [Christopher E. Potts](https://md.research.elamur.ai/free/en/authors/christopher-e-potts/) - [David Dohan](https://md.research.elamur.ai/free/en/authors/david-dohan/) - [Douwe Kiela](https://md.research.elamur.ai/free/en/authors/douwe-kiela/) - [Henryk Michalewski](https://md.research.elamur.ai/free/en/authors/henryk-michalewski/) - [Jacob Austin](https://md.research.elamur.ai/free/en/authors/jacob-austin/) - [Jascha Sohl-dickstein](https://md.research.elamur.ai/free/en/authors/jascha-sohl-dickstein/) - [Karel D'Oosterlinck](https://md.research.elamur.ai/free/en/authors/karel-d-oosterlinck/) - [Kevin P. Murphy](https://md.research.elamur.ai/free/en/authors/kevin-p-murphy/) ## Venues Where their works here were published, the most works first, with the editions of those that have a page. - [Transactions of the Association for Computational Linguistics (TACL)](https://md.research.elamur.ai/free/en/venues/tacl/): [Transactions of the Association for Computational Linguistics (TACL) 2025](https://md.research.elamur.ai/free/en/venues/tacl/2025/) ## Cited by Papers of our library cite their works 85 times (of the 149,439 papers whose bibliographies we read); [33 citing papers with a page here →](https://md.research.elamur.ai/free/en/authors/winnie-xu/cited-by/). Updated 2 November 2026