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Lexin Li

3 accepted papers

2026

Residual Feature Integration is Sufficient to Prevent Negative Transfer

ICLR 2026poster

Transfer learning has become a central paradigm in modern machine learning, yet it suffers from the long-standing problem of negative transfer, where leveraging source representations can harm rather than help performance on the target task. Although empirical remedies have been proposed, there rema…

Cited by 0SourcecodeScholar
2025

Incentivizing Truthful Language Models via Peer Elicitation Games

NeurIPS 2025poster

Large Language Models (LLMs) have demonstrated strong generative capabilities but remain prone to inconsistencies and hallucinations. We introduce Peer Elicitation Games (PEG), a training-free, game-theoretic framework for aligning LLMs through a peer elicitation mechanism involving a generator and…

Cited by 0SourcecodeScholar
2023

Optimizing Pessimism in Dynamic Treatment Regimes: A Bayesian Learning Approach

AISTATS 2023poster

In this article, we propose a novel pessimism-based Bayesian learning method for optimal dynamic treatment regimes in the offline setting. When the coverage condition does not hold, which is common for offline data, the existing solutions would produce sub-optimal policies. The pessimism principle a…