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Daewon Choi

6 accepted papers

2026

HAMLET: Switch Your Vision-Language-Action Model into a History-Aware Policy

ICLR 2026poster

Inherently, robotic manipulation tasks are history-dependent: leveraging past context could be beneficial. However, most existing Vision-Language-Action models (VLAs) have been designed without considering this aspect, i.e., they rely solely on the current observation, ignoring preceding context. In…

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2025

Mamba Drafters for Speculative Decoding

EMNLP 2025

Speculative decoding has emerged as a promising approach to accelerating large language model (LLM) generation using a fast drafter while maintaining alignment with the target model’s distribution. However, existing approaches face a trade-off: external drafters offer flexibility but can suffer from

2025

Think Clearly: Improving Reasoning via Redundant Token Pruning

EMNLP 2025

Recent large language models have shown promising capabilities in long-form reasoning, following structured chains of thought before arriving at a final answer. However, we observe that these reasoning paths tend to include substantial redundancy; analyzing attention patterns reveals that attention

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2024

Adversarial Robustification via Text-to-Image Diffusion Models

ECCV 2024oral

"Adversarial robustness has been conventionally believed as a challenging property to encode for neural networks, requiring plenty of training data. In the recent paradigm of adopting off-the-shelf models, however, access to their training data is often infeasible or not practical, while most of suc…

2023

Modality-Agnostic Self-Supervised Learning with Meta-Learned Masked Auto-Encoder

NeurIPS 2023poster

Despite its practical importance across a wide range of modalities, recent advances in self-supervised learning (SSL) have been primarily focused on a few well-curated domains, e.g., vision and language, often relying on their domain-specific knowledge. For example, Masked Auto-Encoder (MAE) has bec…

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