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Yukun Chen

9 accepted papers

2026

Breaking the Block: Preserving Data Continuity to Train Superior SAEs for Instruct Models

ICML 2026poster

Sparse Autoencoders (SAEs) have become a cornerstone in mechanistic interpretability. However, current training methods inherit the Block Training paradigm from LLM pre-training. We identify this as a critical methodological oversight when applied to instruct models. Theoretically, utilizing GSNR an…

Cited by 0SourceScholar
2026

Implicit Actor Critic Coupling via a Supervised Learning Framework for RLVR

ICML 2026poster

Recent advances in Reinforcement Learning with Verifiable Rewards (RLVR) have empowered large language models (LLMs) to tackle challenging reasoning tasks such as mathematics and programming. Despite its promise, the RLVR paradigm poses significant challenges, as existing methods often suffer from s…

Cited by 0SourceScholar
2026

RuCL: Stratified Rubric-Based Curriculum Learning for Multimodal Large Language Model Reasoning

ICML 2026poster

Reinforcement Learning with Verifiable Rewards (RLVR) has emerged as a prevailing paradigm for enhancing reasoning in Multimodal Large Language Models (MLLMs). However, relying solely on outcome supervision risks reward hacking, where models learn spurious reasoning patterns to satisfy final answer …

Cited by 4SourceScholar
2025

Leveraging Pre-Trained Models for Multimodal Class-Incremental Learning under Adaptive Fusion

ICASSP 2025accepted

Unlike traditional Multimodal Class-Incremental Learning (MCIL) methods that focus only on vision and text, this paper explores MCIL across vision, audio and text modalities, addressing challenges in integrating complementary information and mitigating catastrophic forgetting. To tackle these issues…

Cited by 0SourceScholar
2025

REFINE: Inversion-Free Backdoor Defense via Model Reprogramming

ICLR 2025poster

Backdoor attacks on deep neural networks (DNNs) have emerged as a significant security threat, allowing adversaries to implant hidden malicious behaviors during the model training phase. Pre-processing-based defense, which is one of the most important defense paradigms, typically focuses on input tr…

Cited by 2SourcePDFScholar
2025

STORYTELLER: An Enhanced Plot-Planning Framework for Coherent and Cohesive Story Generation

ACL 2025finding

Stories are central to human culture, serving to share ideas, preserve traditions, and foster connections. Automatic story generation, a key advancement in artificial intelligence (AI), offers new possibilities for creating personalized content, exploring creative ideas, and enhancing interactive ex…

Cited by 0SourcePDFScholar
2025

Taught Well Learned Ill: Towards Distillation-conditional Backdoor Attack

NeurIPS 2025poster

Knowledge distillation (KD) is a vital technique for deploying deep neural networks (DNNs) on resource-constrained devices by transferring knowledge from large teacher models to lightweight student models. While teacher models from third-party platforms may undergo security verification (e.g., backd…

Cited by 0SourcecodeScholar
2023

Eliminating Adversarial Noise via Information Discard and Robust Representation Restoration

ICML 2023poster

Deep neural networks (DNNs) are vulnerable to adversarial noise. Denoising model-based defense is a major protection strategy. However, denoising models may fail and induce negative effects in fully white-box scenarios. In this work, we start from the latent inherent properties of adversarial sample…

Cited by 8SourcePDFScholar
2020

MEBOW: Monocular Estimation of Body Orientation in the Wild

CVPR 2020poster

Body orientation estimation provides crucial visual cues in many applications, including robotics and autonomous driving. It is particularly desirable when 3-D pose estimation is difficult to infer due to poor image resolution, occlusion or indistinguishable body parts. We present COCO-MEBOW (Monocu…

Cited by 41PDFcodeScholar