Papers by Xiaoxue Li

11 papers
Rethinking LLM Watermark Detection in Black-Box Settings: A Non-Intrusive Third-Party Framework (2026.findings-acl)

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Challenge: Existing secret-key schemes tightly couple detection with injection . this dependency creates a fundamental barrier for real-world governance .
Approach: et al. introduce a black-box framework for non-intrusive, third-party watermark verification . they propose a proxy model to amplify watermark-relevant signals and complementary relative measurements .
Outcome: a new framework decouples detection from injection and assesses alignment of query text with watermark distributions.
MMAC: A Multilingual, Multimodal Alignment Framework for Cultural Grounding Evaluation (2026.acl-long)

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Challenge: Existing models lack cultural alignment across modalities and languages . a new framework to assess cultural awareness across linguistics and languages is needed .
Approach: They propose a framework that integrates tri-modally aligned cultural benchmarks and a five-dimensional evaluation protocol to assess cross-country awareness disparities.
Outcome: The proposed framework assesses cultural awareness disparities across modalities and languages . it is the first dataset aligned at the input level across text, image, and speech .
Reinforcement Learning on Pre-Training Data (2026.acl-long)

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Challenge: Recent progress in large language models is driven by scaling of training compute through pre-training with nexttoken prediction (NTP) or post-training (RL) Pre-training using NTP enables models to acquire extensive knowledge and skills from general data, but it suffers from data inefficiency and catastrophic forgetting in continual learning settings.
Approach: They propose to scale training compute through pre-training with next-token prediction (NTP) or post-training by scaling reinforcement learning (RL) to improve learning from general data.
Outcome: Experiments on multiple benchmarks and models show that the proposed approach improves continual pre-training and provides a strong foundation for post-training on Qwen3-8B-Base.
The Dawn After the Dark: An Empirical Study on Factuality Hallucination in Large Language Models (2024.acl-long)

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Challenge: a growing number of researchers are studying the hallucination issue in large language models.
Approach: They propose a hallucination detection benchmark and a method to detect hallucines in LLMs.
Outcome: The proposed method detects hallucinations and mitigates them using different training stages.
Beyond Single-Audio: Advancing Multi-Audio Processing in Audio Large Language Models (2024.findings-emnlp)

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Challenge: Existing evaluations of audio large language models focus on single audio inputs, but real-world applications often require processing multiple audio streams simultaneously.
Approach: They propose a multi-audio evaluation benchmark that combines 20 audio inputs from 11 audio tasks to capture audio context.
Outcome: The proposed model outperforms baseline models and achieves high data efficiency without human annotations.
HaluEval: A Large-Scale Hallucination Evaluation Benchmark for Large Language Models (2023.emnlp-main)

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Challenge: Existing large language models (LLMs) are prone to generate hallucinations . a recent study shows that LLMs are able to generate content that conflicts with the source or cannot be verified by factual knowledge.
Approach: They propose a framework to evaluate the performance of large language models (LLMs) they propose to use a sample of generated and human-annotated hallucinated samples to evaluate their performance .
Outcome: The proposed framework generates and annotates hallucinated samples from ChatGPT . the results show that existing LLMs face great challenges in recognizing hallucines .
LLMBox: A Comprehensive Library for Large Language Models (2024.acl-demos)

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Challenge: a library to facilitate the development, use, and evaluation of large language models (LLMs) is presented.
Approach: They propose a unified library to facilitate the development, use and evaluation of large language models (LLMs).
Outcome: The proposed library is based on extensive experiments in a variety of evaluation settings.
ChainLM: Empowering Large Language Models with Improved Chain-of-Thought Prompting (2024.lrec-main)

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Challenge: Existing CoT synthesis approaches focus on simpler reasoning tasks and result in inconsistent CoT prompts.
Approach: They propose a framework for automatic generation of superior CoT prompts based on three major evolution strategies . they propose 'step-level debating' method where multiple debaters discuss each reasoning step to arrive at the correct answer.
Outcome: The proposed framework can generate superior CoT prompts from a CoT dataset.
Think More, Hallucinate Less: Mitigating Hallucinations via Dual Process of Fast and Slow Thinking (2025.findings-acl)

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Challenge: Existing studies have focused on the issue of hallucination in large language models.
Approach: They propose a framework that allows an explicit slow thinking generation process for mitigating hallucinations during inference.
Outcome: The proposed framework outperforms baseline approaches on English and Chinese datasets.
VoiceBench: Benchmarking LLM-Based Voice Assistants (2026.tacl-1)

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Challenge: Recent advances in large language models (LLMs) have enabled real-time speech interactions through LLMs.
Approach: They propose a benchmark specifically designed to assess LLM-based voice assistants.
Outcome: The proposed benchmark measures the performance of LLM-based voice assistants across eight tasks.
Small Agent Can Also Rock! Empowering Small Language Models as Hallucination Detector (2024.emnlp-main)

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Challenge: Existing studies on hallucination detection rely heavily on closed-source LLMs such as GPT-4.
Approach: They propose an LLM-based agent framework called HaluAgent that integrates LLMs, multi-functional toolbox and a memory mechanism for hallucination detection.
Outcome: The proposed framework integrates the LLM, multi-functional toolbox, and can detect hallucinations on Chinese and English datasets.

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