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Jungwoo Lee

20 accepted papers

2026

A Regret Minimization Framework on Preference Learning in Large Language Models

ICML 2026spotlight

Reinforcement learning with verifiable rewards (RLVR) has enabled progress on reasoning-intensive tasks by relying on task-specific verifiers that provide automated correctness signals. However, many realistic language tasks are difficult to equip with reliable verifiers, motivating a growing relian…

Cited by 0SourceScholar
2026

An Adaptive Sampling Framework for Diffusion-based Dataset Distillation with High Fidelity and Diversity

AAAI 2026technical

Dataset distillation (DD) aims to generate a compact synthetic dataset that enables efficient training of neural networks while maintaining performance comparable to that achieved with the original dataset. However, existing methods often suffer from two main limitations. They either rely on computa

Cited by 0SourcePDFScholar
2026

MSG-Loc: Multi-Label Likelihood-Based Semantic Graph Matching for Object-Level Global Localization

RA-L 2026

Robots are often required to localize in environments with unknown object classes and semantic ambiguity. However, when performing global localization using semantic objects, high semantic ambiguity intensifies object misclassification and increases the likelihood of incorrect associations, which in

Cited by 0SourceScholar
2026

MSG-Loc: Multi-Label Likelihood-Based Semantic Graph Matching for Object-Level Global Localization

ICRA 2026poster

Robots are often required to localize in environments with unknown object classes and semantic ambiguity. However, when performing global localization using semantic objects, high semantic ambiguity intensifies object misclassification and increases the likelihood of incorrect associations, which in…

2026

MVP-LAM: Learning Action-Centric Latent Action via Cross-Viewpoint Reconstruction

ICML 2026poster

Learning *latent actions* from diverse human videos enables scaling robot learning beyond embodiment-specific robot datasets, and these latent actions have recently been used as pseudo-action labels for vision-language-action (VLA) model pretraining. To make VLA pretraining effective, latent actions…

Cited by 0SourceScholar
2025

Adjusting Initial Noise to Mitigate Memorization in Text-to-Image Diffusion Models

NeurIPS 2025poster

Despite their impressive generative capabilities, text-to-image diffusion models often memorize and replicate training data, prompting serious concerns over privacy and copyright. Recent work has attributed this memorization to an attraction basin—a region where applying classifier-free guidance (CF…

Cited by 0SourceScholar
2025

Bellman Unbiasedness: Toward Provably Efficient Distributional Reinforcement Learning with General Value Function Approximation

ICML 2025poster

Distributional reinforcement learning improves performance by capturing environmental stochasticity, but a comprehensive theoretical understanding of its effectiveness remains elusive. In addition, the intractable element of the infinite dimensionality of distributions has been overlooked. In this p…

Cited by 0SourcePDFScholar
2025

Constructing Fair Latent Space for Intersection of Fairness and Explainability

AAAI 2025technical

As the use of machine learning models has increased, numerous studies have aimed to enhance fairness. However, research on the intersection of fairness and explainability remains insufficient, leading to potential issues in gaining the trust of actual users. Here, we propose a novel module that cons…

Cited by 0SourcePDFScholar
2025

Mitigating Attention Localization in Small Scale: Self-Attention Refinement via One-step Belief Propagation

EMNLP 2025

Transformer-based self-attention mechanism serves as the core of modern language models, yet it often suffers from *localization*, where attentions collapse onto a limited subset of tokens and fail to capture long-range dependencies. To address this issue, we propose **Self-Attention One-step Belief

Cited by 0SourcePDFScholar
2025

Policy-labeled Preference Learning: Is Preference Enough for RLHF?

ICML 2025spotlight

To design reward that align with human goals, Reinforcement Learning from Human Feedback (RLHF) has emerged as a prominent technique for learning reward functions from human preferences and optimizing models using reinforcement learning algorithms. However, existing RLHF methods often misinterpret…

Cited by 0SourcePDFScholar
2024

Mitigating Spurious Correlations via Disagreement Probability

NeurIPS 2024poster

Models trained with empirical risk minimization (ERM) are prone to be biased towards spurious correlations between target labels and bias attributes, which leads to poor performance on data groups lacking spurious correlations. It is particularly challenging to address this problem when access to bi…

Cited by 1SourcePDFScholar
2024

Salience-guided Ground Factor for Robust Localization of Delivery Robots in Complex Urban Environments

ICRA 2024poster

In urban environments for delivery robots, particularly in areas such as campuses and towns, many custom features defy standard road semantic categorizations. Addressing this challenge, our paper introduces a method leveraging Salient Object Detection (SOD) to extract these unique features, employin…

Cited by 0SourceScholar
2023

Bridging the Gap Between Model Explanations in Partially Annotated Multi-Label Classification

CVPR 2023poster

Due to the expensive costs of collecting labels in multi-label classification datasets, partially annotated multi-label classification has become an emerging field in computer vision. One baseline approach to this task is to assume unobserved labels as negative labels, but this assumption induces la…

2023

On the Convergence of Continual Learning with Adaptive Methods

UAI 2023poster

One of the objectives of continual learning is to prevent catastrophic forgetting in learning multiple tasks sequentially, and the existing solutions have been driven by the conceptualization of the plasticity-stability dilemma. However, the convergence of continual learning for each sequential task…

Cited by 4SourcePDFScholar
2023

Pitfall of Optimism: Distributional Reinforcement Learning by Randomizing Risk Criterion

NeurIPS 2023poster

Distributional reinforcement learning algorithms have attempted to utilize estimated uncertainty for exploration, such as optimism in the face of uncertainty. However, using the estimated variance for optimistic exploration may cause biased data collection and hinder convergence or performance. In t…

Cited by 4SourcePDFScholar
2023

SPQR: Controlling Q-ensemble Independence with Spiked Random Model for Reinforcement Learning

NeurIPS 2023poster

Alleviating overestimation bias is a critical challenge for deep reinforcement learning to achieve successful performance on more complex tasks or offline datasets containing out-of-distribution data. In order to overcome overestimation bias, ensemble methods for Q-learning have been investigated t…

2022

Large Loss Matters in Weakly Supervised Multi-Label Classification

CVPR 2022poster

Weakly supervised multi-label classification (WSML) task, which is to learn a multi-label classification using partially observed labels per image, is becoming increasingly important due to its huge annotation cost. In this work, we first regard unobserved labels as negative labels, casting the WSML…

Cited by 79PDFcodeScholar
2021

Chebyshev Polynomial Codes: Task Entanglement-based Coding for Distributed Matrix Multiplication

ICML 2021spotlight

Distributed computing has been a prominent solution to efficiently process massive datasets in parallel. However, the existence of stragglers is one of the major concerns that slows down the overall speed of distributed computing. To deal with this problem, we consider a distributed matrix multiplic…

Cited by 13SourcePDFScholar