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Lanxue Zhang

4 accepted papers

2026

MetaGDPO: Alleviating Catastrophic Forgetting with Metacognitive Knowledge Through Group Direct Preference Optimization

AAAI 2026technical

Large Language Models demonstrate strong reasoning capabilities, which can be effectively compressed into smaller models. However, existing datasets and fine-tuning approaches still face challenges that lead to catastrophic forgetting, particularly for models smaller than 8B. First, most datasets ty

Cited by 0SourcePDFScholar
2025

Dynamic Evaluation with Cognitive Reasoning for Multi-turn Safety of Large Language Models

ACL 2025long

The rapid advancement of Large Language Models (LLMs) poses significant challenges for safety evaluation. Current static datasets struggle to identify emerging vulnerabilities due to three limitations: (1) they risk being exposed in model training data, leading to evaluation bias; (2) their limited…

2024

Sorting, Reasoning, and Extraction: An Easy-to-Hard Reasoning Framework for Document-Level Event Argument Extraction

ICASSP 2024accepted

Document-level event argument extraction is a crucial task to help understand event information. Existing methods mostly ignore the different extraction difficulties of arguments, and the lack of task planning significantly affects the extraction and reasoning abilities of the model. In this paper,…

Cited by 0SourceScholar
2023

Intra-Event and Inter-Event Dependency-Aware Graph Network for Event Argument Extraction

EMNLP 2023long findings

Event argument extraction is critical to various natural language processing tasks for providing structured information. Existing works usually extract the event arguments one by one, and mostly neglect to build dependency information among event argument roles, especially from the perspective of ev…

Cited by 0SourceScholar