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Dong Bok Lee

12 accepted papers

2025

Bayesian Neural Scaling Law Extrapolation with Prior-Data Fitted Networks

ICML 2025poster

Scaling has been a major driver of recent advancements in deep learning. Numerous empirical studies have found that scaling laws often follow the power-law and proposed several variants of power-law functions to predict the scaling behavior at larger scales. However, existing methods mostly rely on…

Cited by 0SourcePDFScholar
2025

Cost-Sensitive Freeze-thaw Bayesian Optimization for Efficient Hyperparameter Tuning

NeurIPS 2025poster

In this paper, we address the problem of cost-sensitive hyperparameter optimization (HPO) built upon freeze-thaw Bayesian optimization (BO). Specifically, we assume a scenario where users want to early-stop the HPO process when the expected performance improvement is not satisfactory with respect to…

Cited by 0SourceScholar
2025

FedSVD: Adaptive Orthogonalization for Private Federated Learning with LoRA

NeurIPS 2025poster

Low-Rank Adaptation (LoRA), which introduces a product of two trainable low-rank matrices into frozen pre-trained weights, is widely used for efficient fine-tuning of language models in federated learning (FL). However, when combined with differentially private stochastic gradient descent (DP-SGD),…

Cited by 0SourceScholar
2025

HarmAug: Effective Data Augmentation for Knowledge Distillation of Safety Guard Models

ICLR 2025poster

Safety guard models that detect malicious queries aimed at large language models (LLMs) are essential for ensuring the secure and responsible deployment of LLMs in real-world applications. However, deploying existing safety guard models with billions of parameters alongside LLMs on mobile devices is…

2025

SafeRoute: Adaptive Model Selection for Efficient and Accurate Safety Guardrails in Large Language Models

ACL 2025finding

Deploying large language models (LLMs) in real-world applications requires robust safety guard models to detect and block harmful user prompts. While large safety guard models achieve strong performance, their computational cost is substantial. To mitigate this, smaller distilled models are used, bu…

2024

Self-Supervised Dataset Distillation for Transfer Learning

ICLR 2024poster

Dataset distillation aims to optimize a small set so that a model trained on the set achieves performance similar to that of a model trained on the full dataset. While many supervised methods have achieved remarkable success in distilling a large dataset into a small set of representative samples, h…

2023

Self-Supervised Set Representation Learning for Unsupervised Meta-Learning

ICLR 2023poster

Unsupervised meta-learning (UML) essentially shares the spirit of self-supervised learning (SSL) in that their goal aims at learning models without any human supervision so that the models can be adapted to downstream tasks. Further, the learning objective of self-supervised learning, which pulls po…

Cited by 11SourcePDFScholar
2021

Contrastive Learning with Adversarial Perturbations for Conditional Text Generation

ICLR 2021poster

Recently, sequence-to-sequence (seq2seq) models with the Transformer architecture have achieved remarkable performance on various conditional text generation tasks, such as machine translation. However, most of them are trained with teacher forcing with the ground truth label given at each time step…

2021

Meta-GMVAE: Mixture of Gaussian VAE for Unsupervised Meta-Learning

ICLR 2021spotlight

Unsupervised learning aims to learn meaningful representations from unlabeled data which can captures its intrinsic structure, that can be transferred to downstream tasks. Meta-learning, whose objective is to learn to generalize across tasks such that the learned model can rapidly adapt to a novel t…

2021

Meta-StyleSpeech : Multi-Speaker Adaptive Text-to-Speech Generation

ICML 2021spotlight

With rapid progress in neural text-to-speech (TTS) models, personalized speech generation is now in high demand for many applications. For practical applicability, a TTS model should generate high-quality speech with only a few audio samples from the given speaker, that are also short in length. How…

2020

Learning to Extrapolate Knowledge: Transductive Few-shot Out-of-Graph Link Prediction

NeurIPS 2020poster

Many practical graph problems, such as knowledge graph construction and drug-drug interaction prediction, require to handle multi-relational graphs. However, handling real-world multi-relational graphs with Graph Neural Networks (GNNs) is often challenging due to their evolving nature, as new entiti…