Thank you for visiting! I'm Long, a third-year CS Ph.D. student at the National University of Singapore (NUS), advised by Professors Min-Yen Kan, Kenji Kawaguchi, Nancy F. Chen, Shafiq Joty. I am rejoining Google Cloud AI Research team as a Student Researcher, and previously interned at Amazon Core Search and Google Cloud AI Research teams. My research focuses on efficient adaptation of language and vision-language models:

  1. Agents [A²RD (preprint), VISTA (CVPR'26), Multi-expert Prompting (EMNLP'24)].
  2. Prompt Analysis [NLPromptEval (ACL'25), FormatBias (NAACL'25)], Design [Multi-expert Prompting (EMNLP'24), Chain-of-Opinion (COLING'25)], and Optimization [adv-ICL (ACL'24)].
  3. Efficient Alignment [LongGuide (ACL'25), Probe sampling (NeurIPS'24)].
  4. Vision-Language and Coding LMs [VISTA (CVPR'26), xCodeEval (ACL'24), Unichart (EMNLP'23), OpenCQA (EMNLP'22), ChartQA (ACL'22)].

Previously, I received my B.Sc. in Mathematics (Statistics) and Computer Science at Nanyang Technological University, Singapore (NTU) advised by Prof. Shafiq Joty. At NTU, I won the SPMS Outstanding Undergraduate Award 2023 (Outstanding Achievement).

I am open to opportunities for collaboration and new research ideas. If you are interested in working with me, please feel free to contact via my email.

News

  • [May 2026] We are releasing A²RD, our state-of-the-art agentic long video generation architecture. A²RD outperforms state-of-the-art baselines by up to 30% in consistency and 20% in narrative coherence! Please check it out!
  • [Feb 2026] VISTA has been accepted to CVPR 2026! See you in Denver, 🇺🇸!
  • [Oct 2025] VISTA has been featured across numerous platforms, including YouTube (e.g., 1, 2, 3), X (formerly Twitter; e.g., 1, 2, 3), Instagram (theartificialintelligence), Facebook, Reddit, and many others!
  • [Oct 2025] My intern work at Google has been released! Check out VISTA, a test-time self-improving video agent which wins existing methods by up to 60%!
  • [Aug 2025] I joined Amazon Core Search as an Applied Scientist intern!
  • [Jun 2025] Ngoc-Hai Nguyen has been admitted to Tufts University PhD programme in Computer Science and Nhat M. Hoang has been admitted to NTU PhD programme in Computer Science! Congratulation!
  • [May 2025] Do you know if you are polite to your LLMs, they can give you better outcomes? Check out NLPromptEval accepted by ACL 2025 Main Conference!
  • [May 2025] Do you know you LLMs can self-evolve to adapt to NLP generation tasks? Check out LongGuide accepted by Findings of ACL 2025!
  • [May 2025] I joined Google Cloud AI Research as a Student Researcher!
  • [Jan 2025] I have been awarded the Research Achievement Award by School of Computing, NUS!
  • [Jan 2025] Do you know your LLMs are biased towards output formats? Check out FormatBiasEval accepted by NAACL 2025 Main Conference!
  • [Dec 2024] I passed my Qualifying Exam (QE). I am now a PhD student -> PhD candidate!
  • [Dec 2024] Do you know Value-Belief-Norm Reasoning is indeed effective for LLMs? Check out Chain-of-Opinions accepted by COLING 2025!
  • [Sep 2024] Do you know simulating an LLM as multiple experts leading to more trustworthy outcomes? Check out Multi-Expert Prompting accepted by EMNLP 2024 Main Conference, and featured by elvis!
  • [May 2024] Do you know simulating an LLM as a Generative Adversarial Network can help you optimize your prompts? Check out adv-ICL accepted by ACL 2024 Main Conference!

Selected Publications

For the full list of my publications: Publications, Google Scholar

A²RD: Agentic Autoregressive Diffusion for Long Video Consistency
Do Xuan Long, Yale Song, Min-Yen Kan, Tomas Pfister, Long T. Le
arXiv preprint, 2026

VISTA: A Test-Time Self-Improving Video Generation Agent
Do Xuan Long, Xingchen Wan, Hootan Nakhost, Chen-Yu Lee, Tomas Pfister, Sercan Ö. Arık
In Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition 2026 (CVPR 2026)

What Makes a Good Natural Language Prompt?
Do Xuan Long, Duy Dinh, Ngoc-Hai Nguyen, Kenji Kawaguchi, Nancy F. Chen, Shafiq Joty, Min-Yen Kan
In Proceedings of the 63rd Annual Meeting of the Association for Computational Linguistics (ACL 2025)

A Survey of Frontiers in LLM Reasoning: Inference Scaling, Learning to Reason, and Agentic Systems
Zixuan Ke, Fangkai Jiao, Yifei Ming, Xuan-Phi Nguyen, Austin Xu, Do Xuan Long, Minzhi Li, Chengwei Qin, Peifeng Wang, Silvio Savarese, Caiming Xiong, Shafiq Joty
In Transactions on Machine Learning Research 2025 (TMLR, Survey Certification)

Multi-expert Prompting Improves Safety, Reliability, and Usefulness of Large Language Models
Do Xuan Long, Yen Duong, Anh Tuan Luu, Kenji Kawaguchi, Min-Yen Kan, Nancy F. Chen
In Proceedings of the 2024 Conference on Empirical Methods in Natural Language Processing (EMNLP 2024)

Prompt Optimization via Adversarial In-Context Learning
Do Xuan Long*, Yiran Zhao*, Hannah Brown*, Yuxi Xie, James Xu Zhao, Nancy F. Chen, Kenji Kawaguchi, Michael Qizhe Xie, Junxian He
In Proceedings of the 62nd Annual Meeting of Association for Computational Linguistics (ACL 2024, Oral)

xCodeEval: A Large Scale Multilingual Multitask Benchmark for Code Understanding, Generation, Translation and Retrieval
Mohammad Abdullah Matin Khan*, M Saiful Bari*, Do Xuan Long, Weishi Wang, Md Rizwan Parvez, Shafiq Joty
In Proceedings of the 62nd Annual Meeting of Association for Computational Linguistics (ACL 2024)

UniChart: A Universal Vision-language Pretrained Model for Chart Comprehension and Reasoning
Ahmed Masry*, Parsa Kavehzadeh*, Do Xuan Long, Enamul Hoque, Shafiq Joty
In Proceedings of the 2023 Conference on Empirical Methods in Natural Language Processing (EMNLP 2023)

ChartQA: A Benchmark for Question Answering about Charts with Visual and Logical Reasoning
Ahmed Masry, Do Xuan Long, Jia Qing Tan, Shafiq Joty, Enamul Hoque
In Proceedings of Findings of 60th Annual Meeting of the Association for Computational Linguistics (ACL 2022 Findings)

Educations

  1. Ph.D. in Computer Science (Aug. 2023 - Present)
    National University of Singapore (NUS), 21 Lower Kent Ridge Rd, Singapore
    Advised by Min-Yen Kan, Kenji Kawaguchi, Nancy Chen, Shafiq Joty
  2. B.Sc. in Mathematical and Computer Sciences (Aug. 2019 - Jul. 2023)
    Nanyang Technological University, Singapore (NTU), 50 Nanyang Ave, Singapore
    Advised by Shafiq Joty, Double Major, Honours, Highest Distinction

Selected Research Experiences

  1. Applied Scientist Intern (Aug. 2025 - Nov. 2025)
    Amazon Core Search, San Francisco Bay Area, California, United States
    Hosted by Hsiang-Fu Yu
  2. Student Researcher (May 2025 - Jul. 2025)
    Google Cloud AI Research, San Francisco Bay Area, California, United States
    Hosted by Xingchen Wan and Sercan Ö. Arik
  3. NTU President Research Scholar (Jul. 2021 - Jul. 2023)
    Natural Language Processing group at NTU (NTU-NLP), Singapore
    Under FYP-URECA programme, advised by Prof. Shafiq Rayhan Joty
  4. Research Intern (Dec. 2021 - Jan. 2023)
    Institute for Infocomm Research, A*STAR, Singapore
    Advised by Bowei Zou and Nancy F. Chen
© 2025 Do Xuan Long. All rights reserved.