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researcher

Xin Cheng

2 papers hereh-index 333 citations4 works total

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

author position
  • middle author2

Across the 2 of 2 papers where every author was matched, so the position is known.

fields
  • cs.CL1
  • cs.LG1
same name
  • Xin Cheng — 11 papers, h 5
  • Xin Cheng — 8 papers, h 6
  • Xin Cheng — 7 papers, h 28
  • Xin Cheng — 6 papers, h 1
  • Xin Cheng — 4 papers, h 12
  • Xin Cheng — 4 papers, h 3

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

2 papers

cs.CL2026

Online Causal Kalman Filtering for Stable and Effective Policy Optimization

Shuo He, Lang Feng, Xin Cheng +2

Reinforcement learning for large language models suffers from high-variance token-level importance sampling (IS) ratios, which would destabilize policy optimization at scale. To im…

cs.LG2026

Hierarchy-of-Groups Policy Optimization for Long-Horizon Agentic Tasks

Shuo He, Lang Feng, Qi Wei +3

Group-based reinforcement learning (RL), such as GRPO, has advanced the capabilities of large language models on long-horizon agentic tasks. To enable more fine-grained policy upda…

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