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Chi-Min Chan

15 accepted papers

2026

DC-W2S: Dual-Consensus Weak-to-Strong Training for Reliable Process Reward Modeling in Biological Reasoning

ICML 2026poster

In scientific reasoning tasks, the veracity of the reasoning process is as critical as the final outcome. While Process Reward Models (PRMs) offer a solution to the coarse-grained supervision problems inherent in Outcome Reward Models (ORMs), their deployment is hindered by the prohibitive cost of o…

Cited by 0SourceScholar
2026

MoEActok: A MoE-based Action Tokenizer for Vision-Language-Action Models

CVPR 2026

Recent works on vision-language-action (VLA) models have made great progress in exploring action tokenizers that convert continuous control signals into discrete tokens to align with LLM/VLM training paradigms.These approaches typically train a single tokenizer over entire manipulation trajectories,

Cited by 0SourcecodeScholar
2026

Semantic Voting: A Self-Evaluation-Free Approach for Efficient LLM Self-Improvement on Unverifiable Open-ended Tasks

ICLR 2026poster

The rising cost of acquiring supervised data has driven significant interest in self-improvement for large language models (LLMs). Straightforward unsupervised signals like majority voting have proven effective in generating pseudo-labels for verifiable tasks, while their applicability to unverifiab…

Cited by 0SourcecodeScholar
2026

What, Whether and How? Unveiling Process Reward Models for Thinking with Images Reasoning

AAAI 2026technical

The rapid advancement of Large Vision Language Models (LVLMs) has demonstrated excellent abilities in various visual tasks. Building upon these developments, the thinking with images paradigm has emerged, enabling models to dynamically edit and re-encode visual information at each reasoning step, mi

Cited by 0SourcePDFScholar
2025

Boosting Policy and Process Reward Models with Monte Carlo Tree Search in Open-Domain QA

ACL 2025finding

The recent introduction of OpenAI’s O1/O3 model represents a significant milestone in developing strong reasoning capabilities in Large Language Models (LLMs). By introducing more computational budget during test-time, LLMs have the potential to explore more accurate and higher-quality solutions. Ho…

2025

Empowering World Models with Reflection for Embodied Video Prediction

ICML 2025poster

Video generation models have made significant progress in simulating future states, showcasing their potential as world simulators in embodied scenarios. However, existing models often lack robust understanding, limiting their ability to perform multi-step predictions or handle Out-of-Distribution (…

Cited by 0SourcePDFScholar
2025

Graceful Forgetting in Generative Language Models

EMNLP 2025

Recently, the pretrain-finetune paradigm has become a cornerstone in various deep learning areas. While in general the pre-trained model would promote both effectiveness and efficiency of downstream tasks fine-tuning, studies have shown that not all knowledge acquired during pre-training is benefici

2025

Importance Weighting Can Help Large Language Models Self-Improve

AAAI 2025technical

Large language models (LLMs) have shown remarkable capability in numerous tasks and applications. However, fine-tuning LLMs using high-quality datasets under external supervision remains prohibitively expensive. In response, LLM self-improvement approaches have been vibrantly developed recently. The…

2025

PIP: Perturbation-based Iterative Pruning for Large Language Models

EMNLP 2025

The rapid increase in the parameter counts of Large Language Models (LLMs), which often reach into the billions or even trillions, presents significant challenges for their practical deployment, particularly in resource-constrained environments. To address this issue, we propose PIP (Perturbation-ba

Cited by 0SourcePDFScholar
2025

Safe RLHF-V: Safe Reinforcement Learning from Multi-modal Human Feedback

NeurIPS 2025poster

Multimodal large language models (MLLMs) are essential for building general-purpose AI assistants; however, they pose increasing safety risks. How can we ensure safety alignment of MLLMs to prevent undesired behaviors? Going further, it is critical to explore how to fine-tune MLLMs to preserve capab…

Cited by 0SourceScholar
2024

AgentVerse: Facilitating Multi-Agent Collaboration and Exploring Emergent Behaviors

ICLR 2024poster

Autonomous agents empowered by Large Language Models (LLMs) have undergone significant improvements, enabling them to generalize across a broad spectrum of tasks. However, in real-world scenarios, cooperation among individuals is often required to enhance the efficiency and effectiveness of task acc…

2024

ChatEval: Towards Better LLM-based Evaluators through Multi-Agent Debate

ICLR 2024poster

Text evaluation has historically posed significant challenges, often demanding substantial labor and time cost. With the emergence of large language models (LLMs), researchers have explored LLMs' potential as alternatives for human evaluation. While these single-agent-based approaches show promise,…

2023

Exploring the Impact of Model Scaling on Parameter-Efficient Tuning

EMNLP 2023long main

Parameter-efficient tuning (PET) methods can effectively drive extremely large pre-trained language models (PLMs) by training only minimal parameters. Different PET methods utilize different manually designed tunable modules. In small PLMs, there are usually noticeable performance differences among…

Cited by 0SourcecodeScholar
2023

Plug-and-Play Document Modules for Pre-trained Models

ACL 2023long

Large-scale pre-trained models (PTMs) have been widely used in document-oriented NLP tasks, such as question answering. However, the encoding-task coupling requirement results in the repeated encoding of the same documents for different tasks and queries, which is highly computationally inefficient.…

2022

On Transferability of Prompt Tuning for Natural Language Processing

NAACL 2022long

Prompt tuning (PT) is a promising parameter-efficient method to utilize extremely large pre-trained language models (PLMs), which can achieve comparable performance to full-parameter fine-tuning by only tuning a few soft prompts. However, PT requires much more training time than fine-tuning. Intuiti…