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HyunWoo Kim

39 accepted papers

2026

FragFM: Hierarchical Framework for Efficient Molecule Generation via Fragment-Level Discrete Flow Matching

ICLR 2026poster

We introduce FragFM, a novel hierarchical framework via fragment-level discrete flow matching for efficient molecular graph generation. FragFM generates molecules at the fragment level, leveraging a coarse-to-fine autoencoder to reconstruct details at the atom level. Together with a stochastic fragm…

Cited by 0SourceScholar
2026

Frictional Q-Learning

ICML 2026poster

Off-policy reinforcement learning suffers from extrapolation errors when a learned policy selects actions that are weakly supported in the replay buffer. In this study, we address this issue by drawing an analogy to static friction in classical mechanics. From this perspective, the replay buffer is …

Cited by 0SourceScholar
2026

Golden Goose: A Simple Trick to Synthesize Unlimited RLVR Tasks from Unverifiable Internet Text

ICML 2026poster

Reinforcement Learning with Verifiable Rewards (RLVR) has become a cornerstone for unlocking complex reasoning in Large Language Models (LLMs). Yet, scaling up RL is bottlenecked by limited existing verifiable data, where improvements increasingly saturate over prolonged training. To overcome this, …

Cited by 0SourceScholar
2026

Long Grounded Thoughts: Synthesizing Grounded Visual Problems and Distilling Reasoning Chains at Scale

ICML 2026poster

Despite rapid progress, multimodal reasoning still lacks a systematic approach to synthesize large-scale vision-centric datasets beyond visual math. We introduce a framework able to synthesize vision-centric problems spanning diverse levels of complexity, and the resulting dataset with over 1M high-…

Cited by 0SourceScholar
2026

Privasis: Synthesizing the Largest "Public" Private Dataset from Scratch

ICML 2026poster

Research involving privacy-sensitive data has always been constrained by data scarcity, standing in sharp contrast to other areas that have benefited from data scaling. To quench this thirst, we present Privasis (i.e., privacy oasis), the first million-scale fully synthetic dataset entirely built fr…

Cited by 0SourceScholar
2026

SSDi8: Accurate and Efficient 8-bit Quantization for State Space Duality

ICLR 2026poster

Recent advances in sequence modeling have highlighted Mamba as a state space architecture offering efficient long-range dependency modeling and providing a viable alternative to Transformers. Building upon this, Mamba-2 introduces the Structured State Space Duality (SSD), which integrates recurrent…

Cited by 0SourcecodeScholar
2026

ST-Veto: Spatio-Temporal Token Veto for Diffusion MLLMs via Taylor Prediction and Visual Grounding

ICML 2026poster

Vision Language Models (VLMs) achieve strong reasoning with Chain-of-Thought (CoT) prompting but incur high sequential-generation cost, error accumulation, and limited self-correction. Diffusion Multimodal Large Language Models (dMLLMs) unmask tokens in an order-agnostic process, improving efficienc…

Cited by 0SourceScholar
2026

SimpleToM: Exposing the Gap between Explicit ToM Inference and Implicit ToM Application in LLMs

ICLR 2026poster

Large language models (LLMs) are increasingly tested for a "Theory of Mind" (ToM) — the ability to attribute mental states to oneself and others. Yet most evaluations stop at explicit belief attribution in classical toy stories or stylized tasks, leaving open the questions of whether LLMs can implic…

Cited by 0SourcecodeScholar
2025

ALPACA AGAINST VICUNA: Using LLMs to Uncover Memorization of LLMs

NAACL 2025long

In this paper, we investigate the overlooked impact of instruction-tuning on memorization in large language models (LLMs), which has largely been studied in base, pre-trained models. We propose a black-box prompt optimization method where an attacker LLM agent uncovers higher levels of memorization…

2025

Geometry in Style: 3D Stylization via Surface Normal Deformation

CVPR 2025poster

We present Geometry in Style, a new method for identity-preserving mesh stylization. Existing techniques either adhere to the original shape through overly restrictive deformations such as bump maps or significantly modify the input shape using expressive deformations that may introduce artifacts or…

Cited by 0SourcePDFScholar
2025

Socratic-MCTS: Test-Time Visual Reasoning by Asking the Right Questions

EMNLP 2025

Recent research in vision-language models (VLMs) has centered around the possibility of equipping them with implicit long-form chain-of-thought reasoning—akin to the success observed in language models—via distillation and reinforcement learning. But what about the non-reasoning models already train

Cited by 0SourcePDFScholar
2024

Can LLMs Keep a Secret? Testing Privacy Implications of Language Models via Contextual Integrity Theory

ICLR 2024spotlight

Existing efforts on quantifying privacy implications for large language models (LLMs) solely focus on measuring leakage of training data. In this work, we shed light on the often-overlooked interactive settings where an LLM receives information from multiple sources and generates an output to be sha…

Cited by 86SourcePDFScholar
2024

Deal, or no deal (or who knows)? Forecasting Uncertainty in Conversations using Large Language Models

ACL 2024findings

Effective interlocutors account for the uncertain goals, beliefs, and emotions of others. But even the best human conversationalist cannot perfectly anticipate the trajectory of a dialogue. How well can language models represent inherent uncertainty in conversations? We propose FortUne Dial, an expa…

2024

Is this the real life? Is this just fantasy? The Misleading Success of Simulating Social Interactions With LLMs

EMNLP 2024main

Recent advances in large language models (LLM) have enabled richer social simulations, allowing for the study of various social phenomena. However, most recent work has used a more omniscient perspective on these simulations (e.g., single LLM to generate all interlocutors), which is fundamentally at…

Cited by 36SourcePDFScholar
2024

Learning Equi-angular Representations for Online Continual Learning

CVPR 2024poster

Online continual learning suffers from an underfitted solution due to insufficient training for prompt model updates (e.g. single-epoch training). To address the challenge we propose an efficient online continual learning method using the neural collapse phenomenon. In particular we induce neural co…

2024

Perceptions to Beliefs: Exploring Precursory Inferences for Theory of Mind in Large Language Models

EMNLP 2024main

While humans naturally develop theory of mind (ToM), the capability to understand other people’s mental states and beliefs, state-of-the-art large language models (LLMs) underperform on simple ToM benchmarks. We posit that we can extend our understanding of LLMs’ ToM abilities by evaluating key huma…

2024

VVS: Video-to-Video Retrieval with Irrelevant Frame Suppression

AAAI 2024technical

In content-based video retrieval (CBVR), dealing with large-scale collections, efficiency is as important as accuracy; thus, several video-level feature-based studies have actively been conducted. Nevertheless, owing to the severe difficulty of embedding a lengthy and untrimmed video into a single f…

2024

XDetox: Text Detoxification with Token-Level Toxicity Explanations

EMNLP 2024main

Methods for mitigating toxic content through masking and infilling often overlook the decision-making process, leading to either insufficient or excessive modifications of toxic tokens. To address this challenge, we propose XDetox, a novel method that integrates token-level toxicity explanations wit…

Cited by 0SourcePDFScholar
2023

Conservative Bayesian Model-Based Value Expansion for Offline Policy Optimization

ICLR 2023poster

Offline reinforcement learning (RL) addresses the problem of learning a performant policy from a fixed batch of data collected by following some behavior policy. Model-based approaches are particularly appealing in the offline setting since they can extract more learning signals from the logged data…

2023

FANToM: A Benchmark for Stress-testing Machine Theory of Mind in Interactions

EMNLP 2023long main

Theory of mind (ToM) evaluations currently focus on testing models using passive narratives that inherently lack interactivity. We introduce FANToM, a new benchmark designed to stress-test ToM within information-asymmetric conversational contexts via question answering. Our benchmark draws upon impo…

Cited by 0SourceScholar
2023

Relation-Aware Language-Graph Transformer for Question Answering

AAAI 2023technical

Question Answering (QA) is a task that entails reasoning over natural language contexts, and many relevant works augment language models (LMs) with graph neural networks (GNNs) to encode the Knowledge Graph (KG) information. However, most existing GNN-based modules for QA do not take advantage of ri…

2023

SODA: Million-scale Dialogue Distillation with Social Commonsense Contextualization

EMNLP 2023long main

Data scarcity has been a long standing issue in the field of open-domain social dialogue. To quench this thirst, we present SODA: the first publicly available, million-scale high-quality social dialogue dataset. By contextualizing social commonsense knowledge from a knowledge graph, we are able to d…

Cited by 0SourcecodeScholar
2022

Bridging the Gap Between Classification and Localization for Weakly Supervised Object Localization

CVPR 2022poster

Weakly supervised object localization aims to find a target object region in a given image with only weak supervision, such as image-level labels. Most existing methods use a class activation map (CAM) to generate a localization map; however, a CAM identifies only the most discriminative parts of a…

Cited by 56PDFcodeScholar
2022

Perception Prioritized Training of Diffusion Models

CVPR 2022poster

Diffusion models learn to restore noisy data, which is corrupted with different levels of noise, by optimizing the weighted sum of the corresponding loss terms, i.e., denoising score matching loss. In this paper, we show that restoring data corrupted with certain noise levels offers a proper pretext…

Cited by 254PDFcodeScholar
2022

ProsocialDialog: A Prosocial Backbone for Conversational Agents

EMNLP 2022main

Most existing dialogue systems fail to respond properly to potentially unsafe user utterances by either ignoring or passively agreeing with them. To address this issue, we introduce ProsocialDialog, the first large-scale multi-turn dialogue dataset to teach conversational agents to respond to proble…

2022

Unsupervised Visual Representation Learning via Mutual Information Regularized Assignment

NeurIPS 2022accept

This paper proposes Mutual Information Regularized Assignment (MIRA), a pseudo-labeling algorithm for unsupervised representation learning inspired by information maximization. We formulate online pseudo-labeling as an optimization problem to find pseudo-labels that maximize the mutual information b…

2022

VISOLO: Grid-Based Space-Time Aggregation for Efficient Online Video Instance Segmentation

CVPR 2022oral

For online video instance segmentation (VIS), fully utilizing the information from previous frames in an efficient manner is essential for real-time applications. Most previous methods follow a two-stage approach requiring additional computations such as RPN and RoIAlign, and do not fully exploit th…

Cited by 42PDFcodeScholar
2021

Ada-Sise: Adaptive Semantic Input Sampling for Efficient Explanation of Convolutional Neural Networks

ICASSP 2021accepted

Explainable AI (XAI) is an active research area to interpret a neural network’s decision by ensuring transparency and trust in the task-specified learned models. Recently, perturbation-based model analysis has shown better interpretation, but backpropagation techniques are still prevailing because o…

Cited by 0SourceScholar
2021

Explaining Convolutional Neural Networks through Attribution-Based Input Sampling and Block-Wise Feature Aggregation

AAAI 2021technical

As an emerging field in Machine Learning, Explainable AI (XAI) has been offering remarkable performance in interpreting the decisions made by Convolutional Neural Networks (CNNs). To achieve visual explanations for CNNs, methods based on class activation mapping and randomized input sampling have ga…

Cited by 48SourcePDFScholar
2021

How Robust are Fact Checking Systems on Colloquial Claims?

NAACL 2021long

Knowledge is now starting to power neural dialogue agents. At the same time, the risk of misinformation and disinformation from dialogue agents also rises. Verifying the veracity of information from formal sources are widely studied in computational fact checking. In this work, we ask: How robust ar…

2021

Integrated Grad-Cam: Sensitivity-Aware Visual Explanation of Deep Convolutional Networks Via Integrated Gradient-Based Scoring

ICASSP 2021accepted

Visualizing the features captured by Convolutional Neural Networks (CNNs) is one of the conventional approaches to interpret the predictions made by these models in numerous image recognition applications. Grad-CAM is a popular solution that provides such a visualization by combining the activation…

Cited by 0SourceScholar
2021

KLUE: Korean Language Understanding Evaluation

NeurIPS 2021poster

We introduce Korean Language Understanding Evaluation (KLUE) benchmark. KLUE is a collection of eight Korean natural language understanding (NLU) tasks, including Topic Classification, Semantic Textual Similarity, Natural LanguageInference, Named Entity Recognition, Relation Extraction, Dependency P…

Cited by 331SourcecodeScholar
2021

Online Class-Incremental Continual Learning with Adversarial Shapley Value

AAAI 2021technical

As image-based deep learning becomes pervasive on every device, from cell phones to smart watches, there is a growing need to develop methods that continually learn from data while minimizing memory footprint and power consumption. While memory replay techniques have shown exceptional promise for th…

2021

Perspective-taking and Pragmatics for Generating Empathetic Responses Focused on Emotion Causes

EMNLP 2021main

Empathy is a complex cognitive ability based on the reasoning of others’ affective states. In order to better understand others and express stronger empathy in dialogues, we argue that two issues must be tackled at the same time: (i) identifying which word is the cause for the other’s emotion from h…

2021

Wide-Bandwidth Soft Vibrotactile Interface Using Electrohydraulic Actuator for Haptic Steering Wheel Application

RA-L 2021

This letter presents a novel soft vibrotactile interface with a wide acceleration bandwidth that can be applied to a curved surface, such as a steering wheel. This haptic interface utilizes the surface charge-inducing characteristic of polyvinyl chloride (PVC) gel and adopts a design where hydraulic

Cited by 11SourceScholar
2019

Curiosity-Bottleneck: Exploration By Distilling Task-Specific Novelty

ICML 2019oral

Exploration based on state novelty has brought great success in challenging reinforcement learning problems with sparse rewards. However, existing novelty-based strategies become inefficient in real-world problems where observation contains not only task-dependent state novelty of our interest but a…

2019

Learning Not to Learn: Training Deep Neural Networks With Biased Data

CVPR 2019poster

We propose a novel regularization algorithm to train deep neural networks, in which data at training time is severely biased. Since a neural network efficiently learns data distribution, a network is likely to learn the bias information to categorize input data. It leads to poor performance at test…

Cited by 526PDFScholar