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Xuanyu Lei

7 accepted papers

2025

Efficient Dynamic Clustering-Based Document Compression for Retrieval-Augmented-Generation

EMNLP 2025

Retrieval-Augmented Generation (RAG) has emerged as a widely adopted approach for knowledge injection during large language model (LLM) inference in recent years. However, due to their limited ability to exploit fine-grained inter-document relationships, current RAG implementations face challenges i

2025

Scaffolding Coordinates to Promote Vision-Language Coordination in Large Multi-Modal Models

COLING 2025main

State-of-the-art Large Multi-Modal Models (LMMs) have demonstrated exceptional capabilities in vision-language tasks. Despite their advanced functionalities, the performances of LMMs are still limited in challenging scenarios that require complex reasoning with multiple levels of visual information.…

2024

A Cause-Effect Look at Alleviating Hallucination of Knowledge-grounded Dialogue Generation

COLING 2024main

Empowered by the large-scale pretrained language models, existing dialogue systems have demonstrated impressive performance conducting fluent and natural-sounding conversations. However, they are still plagued by the <b>hallucination</b> problem, causing unpredictable factual errors in the generated…

2024

AgentBench: Evaluating LLMs as Agents

ICLR 2024poster

The potential of Large Language Model (LLM) as agents has been widely acknowledged recently. Thus, there is an urgent need to quantitatively evaluate LLMs as agents on challenging tasks in interactive environments. We present AgentBench, a multi-dimensional benchmark that consists of 8 distinct envi…

2024

AlignBench: Benchmarking Chinese Alignment of Large Language Models

ACL 2024long

Alignment has become a critical step for instruction-tuned Large Language Models (LLMs) to become helpful assistants. However, effective evaluation of alignment for emerging Chinese LLMs is still significantly lacking, calling for real-scenario grounded, open-ended, challenging and automatic evaluat…

2024

CritiqueLLM: Towards an Informative Critique Generation Model for Evaluation of Large Language Model Generation

ACL 2024long

Since the natural language processing (NLP) community started to make large language models (LLMs) act as a critic to evaluate the quality of generated texts, most of the existing works train a critique generation model on the evaluation data labeled by GPT-4’s direct prompting. We observe that thes…

2024

SafetyBench: Evaluating the Safety of Large Language Models

ACL 2024long

With the rapid development of Large Language Models (LLMs), increasing attention has been paid to their safety concerns. Consequently, evaluating the safety of LLMs has become an essential task for facilitating the broad applications of LLMs. Nevertheless, the absence of comprehensive safety evaluat…