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Woohyung Lim

17 accepted papers

2026

AEGIS: Toward Expert-in-the-loop Industrial Anomaly Detection

AAAI 2026technical

Anomaly detection platforms in real-world environments require continuous interaction between automated systems and domain experts, as anomalies evolve dynamically and their definitions vary across contexts. Therefore, an effective platform must collaborate with experts and incorporate their feedbac

Cited by 0SourcePDFScholar
2026

Align While Search: Belief-Guided Exploratory Inference for World-Grounded Embodied Agents

CVPR 2026

In this paper, we propose a test-time adaptive agent that performs exploratory inference through posterior-guided belief refinement without relying on gradient-based updates or additional training for LLM agent operating under partial observability. Our agent maintains an external structured belief

Cited by 0SourcecodeScholar
2026

Designing Observation and Action Models for Efficient Reinforcement Learning with LLMs

ICML 2026poster

Large Language Models (LLMs) have emerged as powerful tools for semantic reasoning, enabling the formalization of tasks that traditionally relied on manual human intuition. This capability extends to environment design in Reinforcement Learning (RL). While prior research predominantly focuses on rew…

Cited by 0SourceScholar
2026

From Static Benchmarks to Dynamic Protocol: Agent-Centric Text Anomaly Detection for Evaluating LLM Reasoning

ICLR 2026poster

The evaluation of large language models (LLMs) has predominantly relied on static datasets, which offer limited scalability and fail to capture the evolving reasoning capabilities of recent models. To overcome these limitations, we propose an agent-centric benchmarking paradigm that moves beyond sta…

Cited by 0SourceScholar
2026

OrcheCause Agent: From Textual Knowledge to End-to-End Causal Inference

AAAI 2026technical

Causal agents have emerged as promising tools for automating causal analysis based on user queries. However, existing causal agent systems are often limited to a single causal task, limiting their ability to handle complex queries. In addition, they accept only numerical data as input, preventing th

Cited by 0SourcePDFScholar
2026

RAPID: A Rapid Prototyping Platform for Industrial Automation

AAAI 2026technical

Industrial automation in smart logistics and factories requires simulation platforms that support rapid environment building before costly physical deployment. Yet existing tools often require substantial expertise, complex setup, and long configuration times, hindering agile prototyping. We present

Cited by 0SourcePDFScholar
2026

RL-Studio: A System for Multi-Phase Reinforcement Learning Experimentation

AAAI 2026technical

Reinforcement learning (RL) has evolved beyond monolithic training, yet existing frameworks remain limited to single algorithms or simple offline-to-online transitions. We present multi-phase RL, a framework that orchestrates multiple learning phases for continual policy improvement. It enables effi

Cited by 0SourcePDFScholar
2026

ReTabAD: A Benchmark for Restoring Semantic Context in Tabular Anomaly Detection

ICLR 2026poster

In tabular anomaly detection (AD), textual semantics often carry critical signals, as the definition of an anomaly is closely tied to domain-specific context. However, existing benchmarks provide only raw data points without semantic context, overlooking rich textual metadata such as feature descrip…

Cited by 0SourceScholar
2025

Agent-Centric Actor-Critic for Asynchronous Multi-Agent Reinforcement Learning

ICML 2025poster

Multi-Agent Reinforcement Learning (MARL) struggles with coordination in sparse reward environments. Macro-actions —sequences of actions executed as single decisions— facilitate long-term planning but introduce asynchrony, complicating Centralized Training with Decentralized Execution (CTDE). Existi…

Cited by 0SourcePDFScholar
2025

Diffusion-based Semantic Outlier Generation via Nuisance Awareness for Out-of-Distribution Detection

AAAI 2025technical

Out-of-distribution (OOD) detection, determining whether a given sample is part of the in-distribution (ID) or not, has been newly explored by a generative model-based outlier synthesizing approach, especially with diffusion models. Nonetheless, existing diffusion models often produce outliers that…

Cited by 0SourcePDFScholar
2025

ImagePiece: Content-aware Re-tokenization for Efficient Image Recognition

AAAI 2025technical

Vision Transformers (ViTs) have achieved remarkable success in various computer vision tasks. However, ViTs have a huge computational cost due to their inherent reliance on multi-head self-attention (MHSA), prompting efforts to accelerate ViTs for practical applications. To this end, recent works ai…

Cited by 0SourcePDFScholar
2025

Online Pre-Training for Offline-to-Online Reinforcement Learning

ICML 2025poster

Offline-to-online reinforcement learning (RL) aims to integrate the complementary strengths of offline and online RL by pre-training an agent offline and subsequently fine-tuning it through online interactions. However, recent studies reveal that offline pre-trained agents often underperform during…

Cited by 0SourcePDFScholar
2025

Penalizing Infeasible Actions and Reward Scaling in Reinforcement Learning with Offline Data

ICML 2025spotlight

Reinforcement learning with offline data suffers from Q-value extrapolation errors. To address this issue, we first demonstrate that linear extrapolation of the Q-function beyond the data range is particularly problematic. To mitigate this, we propose guiding the gradual decrease of Q-values outside…

Cited by 0SourcePDFScholar
2025

Representation Space Augmentation for Effective Self-Supervised Learning on Tabular Data

AAAI 2025technical

Tabular data, widely used across industries, remains underexplored in deep learning. Self-supervised learning (SSL) shows promise for pre-training deep neural networks (DNNs) on tabular data, but its potential is hindered by challenges in designing suitable augmentations. Unlike image and text data,…

Cited by 0SourcePDFScholar
2024

Binning as a Pretext Task: Improving Self-Supervised Learning in Tabular Domains

ICML 2024poster

The ability of deep networks to learn superior representations hinges on leveraging the proper inductive biases, considering the inherent properties of datasets. In tabular domains, it is critical to effectively handle heterogeneous features (both categorical and numerical) in a unified manner and t…

2024

Geometrically Aligned Transfer Encoder for Inductive Transfer in Regression Tasks

ICLR 2024poster

Transfer learning is a crucial technique for handling a small amount of data that is potentially related to other abundant data. However, most of the existing methods are focused on classification tasks using images and language datasets. Therefore, in order to expand the transfer learning scheme to…

Cited by 2SourcePDFScholar
2023

Multi-Resolution Sequence Aggregation and Model-Agnostic Framework for Time-Series Forecasting

ICASSP 2023accepted

In time-series forecasting, signals such as traffic volume collected in the real world are noisy and irregularly sampled due to sensor malfunctions, so it is difficult to make accurate prediction. To resolve such difficulty, downsampling can be used to reduce noise and allow capturing slow trend of…

Cited by 0SourceScholar