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Xiaoze Liu

4 accepted papers

2025

CausalEval: Towards Better Causal Reasoning in Language Models

NAACL 2025long

Causal reasoning (CR) is a crucial aspect of intelligence, essential for problem-solving, decision-making, and understanding the world. While language models (LMs) can generate rationales for their outputs, their ability to reliably perform causal reasoning remains uncertain, often falling short in…

Cited by 0SourcePDFScholar
2025

Towards Federated RLHF with Aggregated Client Preference for LLMs

ICLR 2025poster

Reinforcement learning with human feedback (RLHF) fine-tunes a pretrained large language model (LLM) using user preference data, enabling it to generate content aligned with human preferences. However, due to privacy concerns, users may be reluctant to share sensitive preference data. To address thi…

Cited by 0SourcePDFScholar
2024

SHIELD: Evaluation and Defense Strategies for Copyright Compliance in LLM Text Generation

EMNLP 2024main

Large Language Models (LLMs) have transformed machine learning but raised significant legal concerns due to their potential to produce text that infringes on copyrights, resulting in several high-profile lawsuits. The legal landscape is struggling to keep pace with these rapid advancements, with ong…

2024

SaySelf: Teaching LLMs to Express Confidence with Self-Reflective Rationales

EMNLP 2024main

Large language models (LLMs) often generate inaccurate or fabricated information and generally fail to indicate their confidence, which limits their broader applications. Previous work has elicited confidence from LLMs by direct or self-consistency prompting, or constructing specific datasets for su…