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Sanghyeon Lee

8 accepted papers

2026

LLM-Guided Communication for Cooperative Multi-Agent Reinforcement Learning

ICML 2026poster

Communication is a key component in multi-agent reinforcement learning (MARL) for mitigating partial observability, yet prior approaches often rely on inefficient information exchange or fail to transmit sufficient state information. To address this, we propose LLM-driven Multi-Agent Communication (…

Cited by 0SourceScholar
2026

OPRO: Orthogonal Panel-Relative Operators for Panel-Aware In-Context Image Generation

CVPR 2026

We introduce a parameter-efficient adaptation method for panel-aware in-context image generation with pre-trained diffusion transformers. The key idea is to compose learnable, panel-specific orthogonal operators onto the backbone's frozen positional encodings. This design provides two desirable prop

Cited by 0SourceScholar
2026

Self-Improving Skill Learning for Robust Skill-based Meta-Reinforcement Learning

ICLR 2026poster

Meta-reinforcement learning (Meta-RL) facilitates rapid adaptation to unseen tasks but faces challenges in long-horizon environments. Skill-based approaches tackle this by decomposing state-action sequences into reusable skills and employing hierarchical decision-making. However, these methods are h…

Cited by 0SourcecodeScholar
2026

Strict Subgoal Execution: Reliable Long-Horizon Planning in Hierarchical Reinforcement Learning

ICLR 2026poster

Long-horizon goal-conditioned tasks pose fundamental challenges for reinforcement learning (RL), particularly when goals are distant and rewards are sparse. While hierarchical and graph-based methods offer partial solutions, their reliance on conventional hindsight relabeling often fails to correct…

Cited by 0SourceScholar
2025

Enabling Region-Specific Control via Lassos in Point-Based Colorization

AAAI 2025technical

Point-based interactive colorization techniques allow users to effortlessly colorize grayscale images using user-provided color hints. However, point-based methods often face challenges when different colors are given to semantically similar areas, leading to color intermingling and unsatisfactory r…

Cited by 0SourcePDFScholar
2024

Exclusively Penalized Q-learning for Offline Reinforcement Learning

NeurIPS 2024spotlight

Constraint-based offline reinforcement learning (RL) involves policy constraints or imposing penalties on the value function to mitigate overestimation errors caused by distributional shift. This paper focuses on a limitation in existing offline RL methods with penalized value function, indicating t…

Cited by 2SourcePDFScholar
2021

Deep Edge-Aware Interactive Colorization Against Color-Bleeding Effects

ICCV 2021poster

Deep neural networks for automatic image colorization often suffer from the color-bleeding artifact, a problematic color spreading near the boundaries between adjacent objects. Such color-bleeding artifacts debase the reality of generated outputs, limiting the applicability of colorization models in…

Cited by 41PDFScholar
2021

Efficient Adversarial Audio Synthesis VIA Progressive Upsampling

ICASSP 2021accepted

This paper proposes a novel generative model called PUGAN, which progressively synthesizes high-quality audio in a raw waveform. Progressive upsampling GAN (PUGAN) leverages the progressive generation of higher-resolution output by stacking multiple encoder-decoder architectures. Compared to an exis…

Cited by 0SourceScholar