--- title: "Chejian Xu — author profile and papers — Elamur Research" description: "Chejian Xu, University of Illinois Urbana-Champaign: 2 papers on Elamur Research (2023–2026), h-index 8 — affiliations, topics, co-authors…" canonical: "https://research.elamur.ai/free/en/authors/chejian-xu/" --- [Elamur Research](https://md.research.elamur.ai/free/en/) · [this page in HTML](https://research.elamur.ai/free/en/authors/chejian-xu/) [home](https://md.research.elamur.ai/free/en/) / [authors](https://md.research.elamur.ai/free/en/authors/) / Chejian Xu # Chejian Xu Chejian Xu has 2 papers in our library, in 2023–2026, most of them on [Language models & pretraining](https://md.research.elamur.ai/free/en/topics/language-models/), [Bias, fairness & safety](https://md.research.elamur.ai/free/en/topics/bias-fairness-safety/); often with [Boxin Wang](https://md.research.elamur.ai/free/en/authors/boxin-wang/), [Bo Li](https://md.research.elamur.ai/free/en/authors/bo-li/), [Bryan Catanzaro](https://md.research.elamur.ai/free/en/authors/bryan-catanzaro/). 2 papers in our library · 2023–2026 [OpenAlex](https://openalex.org/A5004007883) · [ORCID](https://orcid.org/0009-0009-7598-639X) · [**h-index 8**](https://openalex.org/authors/A5004007883) · [21 works](https://openalex.org/works?filter=author.id:A5004007883) · [650 citations](https://openalex.org/works?filter=author.id:A5004007883&sort=cited_by_count:desc) OpenAlex, 2026-10-14 [📄 2 works in our library](https://md.research.elamur.ai/free/en/authors/chejian-xu/#papers) · [🔗 Cited 183 times in our library](https://md.research.elamur.ai/free/en/authors/chejian-xu/cited-by/) · [2 more in our library without a page yet](#also) · [⭐ Paper Stars ranking: #5846](https://md.research.elamur.ai/free/en/paper-stars/page/59/#star-5846) 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=Chejian+Xu) · [Semantic Scholar](https://www.semanticscholar.org/search?q=Chejian+Xu) · [dblp](https://dblp.org/search?q=Chejian+Xu) · [ACL Anthology](https://aclanthology.org/search/?q=Chejian+Xu) ## Affiliations [🎓**University of Illinois Urbana-Champaign** Urbana · United States 2022–2026 · 12 papers*current*](https://md.research.elamur.ai/free/en/universities/university-of-illinois-urbana-champaign/) · [🎓**Zhejiang University** Hangzhou · China 2021–2022 · 2 papers](https://md.research.elamur.ai/free/en/universities/zhejiang-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 8 The field of science this work belongs to (OpenAlex fields).[Computer Science · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/) · [Social Sciences · 1 work](https://md.research.elamur.ai/free/en/shelves/social-sciences/) · [Artificial Intelligence · 2 works](https://md.research.elamur.ai/free/en/shelves/computer-science/artificial-intelligence/) · [Safety Research · 1 work](https://md.research.elamur.ai/free/en/shelves/social-sciences/safety-research/) · [Sociology and Political Science · 1 work](https://md.research.elamur.ai/free/en/shelves/social-sciences/sociology-and-political-science/) · [Arts and Humanities · 1 work](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/) · [Computer Vision and Pattern Recognition · 1 work](https://md.research.elamur.ai/free/en/shelves/computer-science/computer-vision-and-pattern-recognition/) · [Language and Linguistics · 1 work](https://md.research.elamur.ai/free/en/shelves/arts-and-humanities/language-and-linguistics/) 🧭 Topics 2 Research subjects and languages the work is about.[Language models & pretraining · 2 works](https://md.research.elamur.ai/free/en/topics/language-models/) · [Bias, fairness & safety · 1 work](https://md.research.elamur.ai/free/en/topics/bias-fairness-safety/) ## Works by year ### 2020s [**2026** 1 paper](https://md.research.elamur.ai/free/en/authors/chejian-xu/year/2026/) · [**2023** 1 paper](https://md.research.elamur.ai/free/en/authors/chejian-xu/year/2023/) ## Papers The most cited first (OpenAlex and our library). 1. **[DecodingTrust: A Comprehensive Assessment of Trustworthiness in GPT Models](https://md.research.elamur.ai/free/en/papers/wang-2023-decodingtrust-comprehensive-assessment-trustworthiness-gpt/)** *(2023 · 259 citations)* Practitioners increasingly propose GPT models for high-stakes domains such as healthcare and finance, yet little systematic evidence exists on how reliable these models are. 2. **[From 128K to 4M: Efficient Training of Ultra-Long Context Large Language Models](https://md.research.elamur.ai/free/en/papers/xu-2026-128k-4m-efficient-training-ultra/)** *(2026 · 5 citations)* Open LLMs struggle to reason over very long inputs. Existing context-extension efforts often lack transparent data recipes, require expensive training, or lose quality on ordinary short tasks. The authors present a two-stage recipe that takes Llama-3.1-8B-Instruct from its native 128K window to 1M, 2M, and 4M tokens. ## All works 4 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. **[DecodingTrust: A Comprehensive Assessment of Trustworthiness in GPT Models](https://md.research.elamur.ai/free/en/papers/wang-2023-decodingtrust-comprehensive-assessment-trustworthiness-gpt/) [Conference on Neural Information Processing Systems (NeurIPS)](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/)**Boxin Wang, Weixin Chen, Hengzhi Pei, et al.*2023 · 259 citations* 2. **[From 128K to 4M: Efficient Training of Ultra-Long Context Large Language Models](https://md.research.elamur.ai/free/en/papers/xu-2026-128k-4m-efficient-training-ultra/) [Findings of the Association for Computational Linguistics](https://md.research.elamur.ai/free/en/venues/findings/)**Chejian Xu, Wei Ping, Peng Xu, et al.*2026 · 5 citations* 3. **[MMDT: Decoding the Trustworthiness and Safety of Multimodal Foundation Models ↗](https://arxiv.org/abs/2503.14827) arXiv (Cornell University) · no summary yet**Chejian Xu et al.*2025 · 5 citations* 4. **[DecodingTrust-Agent Platform (DTap): A Controllable and Interactive Red-Teaming Platform for AI Agents ↗](https://arxiv.org/abs/2605.04808) arXiv (Cornell University) · no summary yet**Zhaorun Chen et al.*2026* ## Co-authors here 12 of 13 co-authors with a page, the most papers together first. - [Boxin Wang](https://md.research.elamur.ai/free/en/authors/boxin-wang/) ×2 - [Bo Li](https://md.research.elamur.ai/free/en/authors/bo-li/) - [Bryan Catanzaro](https://md.research.elamur.ai/free/en/authors/bryan-catanzaro/) - [Chenhui Zhang](https://md.research.elamur.ai/free/en/authors/chenhui-zhang/) - [Chulin Xie](https://md.research.elamur.ai/free/en/authors/chulin-xie/) - [Mohammad Shoeybi](https://md.research.elamur.ai/free/en/authors/mohammad-shoeybi/) - [Peng Xu](https://md.research.elamur.ai/free/en/authors/peng-xu/) - [Rylan Schaeffer](https://md.research.elamur.ai/free/en/authors/rylan-schaeffer/) - [Simran Arora](https://md.research.elamur.ai/free/en/authors/simran-arora/) - [Wei Ping](https://md.research.elamur.ai/free/en/authors/wei-ping/) - [Weixin Chen](https://md.research.elamur.ai/free/en/authors/weixin-chen/) - [Zidi Xiong](https://md.research.elamur.ai/free/en/authors/zidi-xiong/) ## Venues Where their works here were published, the most works first, with the editions of those that have a page. - [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/) - [Conference on Neural Information Processing Systems (NeurIPS)](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/): [NeurIPS 2023](https://md.research.elamur.ai/free/en/venues/neural-information-processing-systems/2023/) ## Cited by Papers of our library cite their works 183 times (of the 149,439 papers whose bibliographies we read); [45 citing papers with a page here →](https://md.research.elamur.ai/free/en/authors/chejian-xu/cited-by/). Updated 31 October 2026