Search Results for author: Sungrack Yun

Found 19 papers, 1 papers with code

Label Shift Adapter for Test-Time Adaptation under Covariate and Label Shifts

no code implementations ICCV 2023 Sunghyun Park, Seunghan Yang, Jaegul Choo, Sungrack Yun

Test-time adaptation (TTA) aims to adapt a pre-trained model to the target domain in a batch-by-batch manner during inference.

Test-time Adaptation

Progressive Random Convolutions for Single Domain Generalization

no code implementations CVPR 2023 Seokeon Choi, Debasmit Das, Sungha Choi, Seunghan Yang, Hyunsin Park, Sungrack Yun

Single domain generalization aims to train a generalizable model with only one source domain to perform well on arbitrary unseen target domains.

Domain Generalization Image Augmentation

Improving Test-Time Adaptation via Shift-agnostic Weight Regularization and Nearest Source Prototypes

no code implementations24 Jul 2022 Sungha Choi, Seunghan Yang, Seokeon Choi, Sungrack Yun

This paper proposes a novel test-time adaptation strategy that adjusts the model pre-trained on the source domain using only unlabeled online data from the target domain to alleviate the performance degradation due to the distribution shift between the source and target domains.

Test-time Adaptation

Domain Agnostic Few-shot Learning for Speaker Verification

no code implementations28 Jun 2022 Seunghan Yang, Debasmit Das, Janghoon Cho, Hyoungwoo Park, Sungrack Yun

Deep learning models for verification systems often fail to generalize to new users and new environments, even though they learn highly discriminative features.

Domain Generalization Few-Shot Learning +1

Distribution Estimation to Automate Transformation Policies for Self-Supervision

no code implementations24 Nov 2021 Seunghan Yang, Debasmit Das, Simyung Chang, Sungrack Yun, Fatih Porikli

However, it is observed that image transformations already present in the dataset might be less effective in learning such self-supervised representations.

Generative Adversarial Network Self-Supervised Learning

Federated Learning of User Verification Models Without Sharing Embeddings

no code implementations18 Apr 2021 Hossein Hosseini, Hyunsin Park, Sungrack Yun, Christos Louizos, Joseph Soriaga, Max Welling

We consider the problem of training User Verification (UV) models in federated setting, where each user has access to the data of only one class and user embeddings cannot be shared with the server or other users.

Federated Learning

Prototype-based Personalized Pruning

no code implementations25 Mar 2021 Jangho Kim, Simyung Chang, Sungrack Yun, Nojun Kwak

We verify the usefulness of PPP on a couple of tasks in computer vision and Keyword spotting.

Keyword Spotting Model Compression

SubSpectral Normalization for Neural Audio Data Processing

no code implementations25 Mar 2021 Simyung Chang, Hyoungwoo Park, Janghoon Cho, Hyunsin Park, Sungrack Yun, Kyuwoong Hwang

In this work, we introduce SubSpectral Normalization (SSN), which splits the input frequency dimension into several groups (sub-bands) and performs a different normalization for each group.

Keyword Spotting

Secure Federated Learning of User Verification Models

no code implementations1 Jan 2021 Hossein Hosseini, Hyunsin Park, Sungrack Yun, Christos Louizos, Joseph Soriaga, Max Welling

We consider the problem of training User Verification (UV) models in federated setup, where the conventional loss functions are not applicable due to the constraints that each user has access to the data of only one class and user embeddings cannot be shared with the server or other users.

Federated Learning

Efficient Action Recognition via Dynamic Knowledge Propagation

no code implementations ICCV 2021 HanUl Kim, Mihir Jain, Jun-Tae Lee, Sungrack Yun, Fatih Porikli

Efficient action recognition has become crucial to extend the success of action recognition to many real-world applications.

Action Recognition

Federated Learning of User Authentication Models

no code implementations9 Jul 2020 Hossein Hosseini, Sungrack Yun, Hyunsin Park, Christos Louizos, Joseph Soriaga, Max Welling

In this paper, we propose Federated User Authentication (FedUA), a framework for privacy-preserving training of UA models.

Federated Learning Privacy Preserving +1

Weakly Labeled Sound Event Detection Using Tri-training and Adversarial Learning

no code implementations14 Oct 2019 Hyoungwoo Park, Sungrack Yun, Jungyun Eum, Janghoon Cho, Kyuwoong Hwang

This paper considers a semi-supervised learning framework for weakly labeled polyphonic sound event detection problems for the DCASE 2019 challenge's task4 by combining both the tri-training and adversarial learning.

Event Detection Sound Event Detection

Acoustic Scene Classification Based on a Large-margin Factorized CNN

no code implementations14 Oct 2019 Janghoon Cho, Sungrack Yun, Hyoungwoo Park, Jungyun Eum, Kyuwoong Hwang

With this loss function, the samples from the same audio scene are clustered independently of the environment, and thus we can get the classifier with better generalization ability in an unseen environment.

Acoustic Scene Classification Classification +2

An End-to-End Text-independent Speaker Verification Framework with a Keyword Adversarial Network

no code implementations6 Aug 2019 Sungrack Yun, Janghoon Cho, Jungyun Eum, Wonil Chang, Kyuwoong Hwang

In training our speaker verification framework, we consider both the triplet loss minimization and adversarial gradient of the ASR network to obtain more discriminative and text-independent speaker embedding vectors.

Automatic Speech Recognition Automatic Speech Recognition (ASR) +2

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