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Guizhen Chen

9 accepted papers

2025

FineReason: Evaluating and Improving LLMs’ Deliberate Reasoning through Reflective Puzzle Solving

ACL 2025long

Many challenging reasoning tasks require not just rapid, intuitive responses, but a more deliberate, multi-step approach. Recent progress in large language models (LLMs) highlights an important shift from the “System 1” way of quick reactions to the “System 2” style of reflection-and-correction prob…

2025

GeoPQA: Bridging the Visual Perception Gap in MLLMs for Geometric Reasoning

EMNLP 2025

Recent advancements in reinforcement learning (RL) have enhanced the reasoning abilities of large language models (LLMs), yet the impact on multimodal LLMs (MLLMs) is limited. Particularly in vision-intensive tasks like geometric reasoning, MLLMs hallucinate frequently, leading to inaccurate reasoni

2025

JsonTuning: Towards Generalizable, Robust, and Controllable Instruction Tuning

ACL 2025finding

Instruction tuning is vital for enhancing the performance of large language models (LLMs), but existing text-to-text methods, referred to as TextTuning, struggle with issues such as generalization, robustness, and controllability due to their lack of explicit task structures. We introduce JsonTuning…

2025

Pruning General Large Language Models into Customized Expert Models

ACL 2025finding

Large Language Models (LLMs) have transformed natural language processing, yet their substantial model sizes often demand significant computational resources. To preserve computing resources and accelerate inference speed, it is crucial to prune redundant parameters, especially for experienced users…

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2024

Data Augmentation using LLMs: Data Perspectives, Learning Paradigms and Challenges

ACL 2024findings

In the rapidly evolving field of large language models (LLMs), data augmentation (DA) has emerged as a pivotal technique for enhancing model performance by diversifying training examples without the need for additional data collection. This survey explores the transformative impact of LLMs on DA, pa…

2024

Exploring the Potential of Large Language Models in Computational Argumentation

ACL 2024long

Computational argumentation has become an essential tool in various domains, including law, public policy, and artificial intelligence. It is an emerging research field in natural language processing that attracts increasing attention. Research on computational argumentation mainly involves two type…

2024

How do Large Language Models Handle Multilingualism?

NeurIPS 2024poster

Large language models (LLMs) have demonstrated impressive capabilities across diverse languages. This study explores how LLMs handle multilingualism. Based on observed language ratio shifts among layers and the relationships between network structures and certain capabilities, we hypothesize the LLM…

2024

Reasoning Paths Optimization: Learning to Reason and Explore From Diverse Paths

EMNLP 2024finding

Advanced models such as OpenAI o1 exhibit impressive problem-solving capabilities through step-by-step reasoning. However, they may still falter on more complex problems, making errors that disrupt their reasoning paths. We attribute this to the expansive solution space, where each step has the risk…

2023

Zero-Shot Text Classification via Self-Supervised Tuning

ACL 2023findings

Existing solutions to zero-shot text classification either conduct prompting with pre-trained language models, which is sensitive to the choices of templates, or rely on large-scale annotated data of relevant tasks for meta-tuning. In this work, we propose a new paradigm based on self-supervised lea…