Jiwei Tang (汤济玮)

M.Eng. Student in Computer Technology
Tsinghua University
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Jiwei Tang

About

I am a Master's student in Computer Technology at Tsinghua University, advised by Prof. Hai-Tao Zheng. My research lies in Natural Language Processing, with a particular focus on Large Language Models. I am currently a research intern at the Ling Team of Ant Group (Foundation Model Team), where I work on efficient agentic language models.

Research interests: Machine Learning · Natural Language Processing

Education

M.Eng. in Computer Technology
Tsinghua University · 2024.09 – 2027.06 (expected)
Tsinghua University Merit Student · Department-level Scholarship
B.Eng. in Computer Science and Technology
Jinan University · 2020.09 – 2024.06 · Rank: 1 / 99
National Scholarship · Outstanding Graduate · Outstanding Thesis · Excellent Student (×2)

Publications

GMSA: Enhancing Context Compression via Group Merging and Layer Semantic Alignment
Jiwei Tang, et al.
ACL 2026 (Oral, Best Paper Nomination)
[Paper] [Code]
COMI: Coarse-to-Fine Context Compression via Marginal Information Gain
Jiwei Tang, et al.
ICLR 2026
[Paper] [Code] [Twitter] [Press]
Read As Human: Compressing Context via Parallelizable Close Reading and Skimming
Jiwei Tang, et al.
ACL 2026
[Paper] [Code] [Twitter] [Press]
Perception Compressor: A Training-Free Prompt Compression Framework in Long Context Scenarios
Jiwei Tang, et al.
Findings of NAACL 2025
[Paper] [Code]
When Hard Negatives Hurt: Bridging the Generative-Discriminative Gap in Hard Negative Synthesis
*Zhicheng Zhang, *Jiwei Tang, et al.
KDD 2026
[Paper]
CoS: Towards Optimal Event Scheduling via Chain-of-Scheduling
Yiming Zhao, Jiwei Tang, et al.
AAAI 2026
[Paper]
* denotes equal contribution.

Under Review

Beyond Position Bias: Shifting Context Compression from Position-Driven to Semantic-Driven
Jiwei Tang, et al.
NeurIPS 2026 (under review)
[Paper]
CoS-R1: Enhancing Chain-of-Scheduling Reasoning Capability via Reinforcement Learning
Jiwei Tang, et al.
TMC 2026 (under review)
[Paper]

Experience

Research Intern — Ant Group
Post Training at Ling Team · Foundation Model Team · 2026.04 – Present
Mentor: Junjie Ou
Research Intern — Alibaba Group
Future Living Lab · Foundation Model Team · 2025.07 – 2026.04
Mentor: Shilei Liu

Skills

© 2026 Jiwei Tang · Last updated: August 2026