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At La Jolla, Dec 2025.
jchengajnull@nullcse.ust.hk

I am a Ph.D. candidate at the Hong Kong University of Science and Technology (HKUST), advised by Professor Yangqiu Song.

Previously, I was a research intern at Amazon Web Services AI Lab, working with Professor Zheng Zhang and Yue Zhang. I received my Bachelor's degree in Data Science from Fudan University.

My research focuses on Natural Language Processing, with particular interests in knowledge grounding and analogical reasoning.

News

🎉 Our paper AMemGym is accepted to ICLR 2026! It is the first interactive online-policy benchmark for conversational memory — revealing that static offline rankings can be misleading, and introducing a Write-Read-Utilize diagnostic framework for long-context assistants.
🚀 Excited to start my Applied Scientist Internship with the Amazon Rufus team in Palo Alto!
🎉 Delighted to share that several recent papers are accepted by the EMNLP 24 conference. Check out the evidence conflict detection / resolution, negotiation Theory of Mind, and analogies for understanding scientific concept papers below! Will attend the conference in person at Miami, FL this November.
Our recent work on story analogies has been accepted to EMNLP-2023 main conference! I will be attending the conference in person. Please feel free to reach out to me! 😊

1. Selected Publications

ICLR
2026
AMemGym: Interactive Memory Benchmarking for Assistants in Long-Horizon Conversations
Cheng Jiayang*, Dongyu Ru*, Lin Qiu, Yiyang Li, Xuezhi Cao, Yangqiu Song, Xunliang Cai

EMNLP
2025
LogiDynamics: Unraveling the Dynamics of Inductive, Abductive and Deductive Logical Inferences in LLM Reasoning
Tianshi Zheng, Cheng Jiayang, Chunyang Li, Haochen Shi, Zihao Wang, Jiaxin Bai, Yangqiu Song, Ginny Wong, Simon See

EMNLP Findings
2025
InteGround: On the Evaluation of Verification and Retrieval Planning in Integrative Grounding
Cheng Jiayang, Qianqian Zhuang, Haoran Li, Chunkit Chan, Xin Liu, Lin Qiu, Yangqiu Song

EMNLP
2024
ECon: On the Detection and Resolution of Evidence Conflicts
Cheng Jiayang, Chunkit Chan, Qianqian Zhuang, Lin Qiu, Tianhang Zhang, Tengxiao Liu, Yangqiu Song, Yue Zhang, Pengfei Liu, Zheng Zhang

EMNLP Findings
2024
NegotiationToM: A Benchmark for Stress-testing Machine Theory of Mind on Negotiation Surrounding
Chunkit Chan, Cheng Jiayang, Yauwai Yim, Zheye Deng, Wei Fan, Haoran Li, Xin Liu, Hongming Zhang, Weiqi Wang, Yangqiu Song

EMNLP
2024
Boosting Scientific Concepts Understanding: Can Analogy from Teacher Models Empower Student Models?
Siyu Yuan*, Cheng Jiayang* (equal contribution), Lin Qiu, Deqing Yang

NeurIPS
2024
Can Language Models Learn to Skip Steps?
Tengxiao Liu, Qipeng Guo, Xiangkun Hu, Cheng Jiayang, Yue Zhang, Xipeng Qiu, Zheng Zhang

LREC-COLING
2024
EventGround: Narrative Reasoning by Grounding to Eventuality-centric Knowledge Graphs
Cheng Jiayang, Lin Qiu, Chunkit Chan, Xin Liu, Yangqiu Song, Zheng Zhang

EACL Findings
2024
Exploring the Potential of ChatGPT on Sentence Level Relations: A Focus on Temporal, Causal, and Discourse Relations
Chunkit Chan, Cheng Jiayang, Weiqi Wang, Yuxin Jiang, Tianqing Fang, Xin Liu, Yangqiu Song

EMNLP
2023
StoryAnalogy: Deriving Story-level Analogies from Large Language Models to Unlock Analogical Understanding
Cheng Jiayang, Lin Qiu, Tsz Ho Chan, Tianqing Fang, Weiqi Wang, Chunkit Chan, Dongyu Ru, Qipeng Guo, Hongming Zhang, Yangqiu Song, Yue Zhang, Zheng Zhang

ICML
2022
Boosting graph structure learning with dummy nodes
Xin Liu, Cheng Jiayang, Yangqiu Song, Xin Jiang

ACL
2022
Learning from sibling mentions with scalable graph inference in fine-grained entity typing
Yi Chen*, Cheng Jiayang* (equal contribution), Haiyun Jiang, Lemao Liu, Haisong Zhang, Shuming Shi, Ruifeng Xu

2. Experiences

Academia
2023 - now
Ph.D. candidate in Computer Science at HKUST.
2021 - 2023
M.Phil. in Computer Science at HKUST.
2017 - 2021
B.Sc. in Data Science at Fudan University.
Industry
06/2025
Amazon Store Foundational AI (Palo Alto). Applied Scientist Intern on Post-training.
04/2025
Meituan Longcat Team. Research Intern on Agentic Memory.
04/2022
Amazon Web Services AI Lab (Shanghai). Applied Scientist Intern.
07/2020
Tencent AI Lab. Research Intern.
Teaching
2026 Spring
Introduction to Artificial Intelligence. COMP2211
2025 Spring
Natural Language Processing. CSIT6000R
2024 Fall
Computer Networks. COMP5621; Natural Language Processing. MSBD5018
2024 Spring
Introduction to Computer Science. COMP1021
2022 Fall
Machine Learning with Structured Data. COMP4222
2022 Spring
Big Data Mining and Management / Advanced Data Mining for Risk Management and Business Intelligence. COMP4332 /RMBI4310

Miscellaneous

In meditation.
Captain.