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Haifeng Xu

3 papers hereh-index 00 citations4 works total

Matching runs newest-first, so older work may not be attached to this profile yet.

author position
  • last author3

Across the 3 of 3 papers where every author was matched, so the position is known.

fields
  • cs.CL1
  • cs.LG1
  • stat.ML1
same name
  • Haifeng Xu — 17 papers, h 25
  • Haifeng Xu — 8 papers, h 11
  • Haifeng Xu — 5 papers
  • Haifeng Xu — 5 papers, h 3
  • Haifeng Xu — 4 papers
  • Haifeng Xu — 4 papers

Either other researchers who publish under this name, or the same person where the external sources have not merged their records.

identity via Semantic Scholar / OpenAlex

collaborators

3 papers

cs.CL2026

Fine-Tuning Improves Information Conveyance in Language Models

Yuwei Cheng, Weiyi Tian, Haifeng Xu

Fine-tuning is often believed to reduce uncertainty and diversity in large language models, but existing analyses overlook output length, a key confounder, and therefore fail to ca…

cs.LG2025

Learning Personalized Ad Impact via Contextual Reinforcement Learning under Delayed Rewards

Yuwei Cheng, Zifeng Zhao, Haifeng Xu

Online advertising platforms use automated auctions to connect advertisers with potential customers, requiring effective bidding strategies to maximize profits. Accurate ad impact…

stat.ML2025

Escaping Model Collapse via Synthetic Data Verification: Near-term Improvements and Long-term Convergence

Bingji Yi, Qiyuan Liu, Yuwei Cheng +1

Synthetic data has been increasingly used to train frontier generative models. However, recent studies raise key concerns that iteratively retraining a generative model on its self…

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