Search Results for author: Han Chen

Found 21 papers, 4 papers with code

Triple Disentangled Representation Learning for Multimodal Affective Analysis

no code implementations29 Jan 2024 Ying Zhou, Xuefeng Liang, Han Chen, Yin Zhao, Xin Chen, Lida Yu

We revisit the disentanglement issue, and propose a novel triple disentanglement approach, TriDiRA, which disentangles the modality-invariant, effective modality-specific and ineffective modality-specific representations from input data.

Disentanglement

No More Distractions: an Adaptive Up-Sampling Algorithm to Reduce Data Artifacts

no code implementations25 Jan 2024 Han Chen

Researchers recently found out that sometimes language models achieve high accuracy on benchmark data set, but they can not generalize very well with even little changes to the original data set.

Evaluating and Personalizing User-Perceived Quality of Text-to-Speech Voices for Delivering Mindfulness Meditation with Different Physical Embodiments

no code implementations7 Jan 2024 Zhonghao Shi, Han Chen, Anna-Maria Velentza, SiQi Liu, Nathaniel Dennler, Allison O'Connell, Maja Matarić

Building on findings from Phase 1, in Phase 2, an in-person within-subject study (N=94), we used a novel framework we developed for personalizing TTS voices based on user preferences, and evaluated user-perceived quality compared to best-rated non-personalized voices from Phase 1.

Evading Detection Actively: Toward Anti-Forensics against Forgery Localization

no code implementations16 Oct 2023 Long Zhuo, Shenghai Luo, Shunquan Tan, Han Chen, Bin Li, Jiwu Huang

In adversarial training, SEAR employs a forgery localization model as a supervisor to explore tampering features and constructs a deep-learning concealer to erase corresponding traces.

Adversarial Attack Self-Supervised Learning

FedCompass: Efficient Cross-Silo Federated Learning on Heterogeneous Client Devices using a Computing Power Aware Scheduler

1 code implementation26 Sep 2023 Zilinghan Li, Pranshu Chaturvedi, Shilan He, Han Chen, Gagandeep Singh, Volodymyr Kindratenko, E. A. Huerta, Kibaek Kim, Ravi Madduri

Nonetheless, because of the disparity of computing resources among different clients (i. e., device heterogeneity), synchronous federated learning algorithms suffer from degraded efficiency when waiting for straggler clients.

Federated Learning

Synergistic Signal Denoising for Multimodal Time Series of Structure Vibration

no code implementations17 Aug 2023 Yang Yu, Han Chen

Structural Health Monitoring (SHM) plays an indispensable role in ensuring the longevity and safety of infrastructure.

Denoising Time Series

Transformer-Based Denoising of Mechanical Vibration Signals

no code implementations4 Aug 2023 Han Chen, Yang Yu, Pengtao Li

Mechanical vibration signal denoising is a pivotal task in various industrial applications, including system health monitoring and failure prediction.

Denoising

CSGCL: Community-Strength-Enhanced Graph Contrastive Learning

1 code implementation8 May 2023 Han Chen, Ziwen Zhao, Yuhua Li, Yixiong Zou, Ruixuan Li, Rui Zhang

Graph Contrastive Learning (GCL) is an effective way to learn generalized graph representations in a self-supervised manner, and has grown rapidly in recent years.

Attribute Contrastive Learning +3

Spatial-temporal Transformer-guided Diffusion based Data Augmentation for Efficient Skeleton-based Action Recognition

no code implementations26 Feb 2023 Yifan Jiang, Han Chen, Hanseok Ko

In this paper, we introduce a novel data augmentation method for skeleton-based action recognition tasks, which can effectively generate high-quality and diverse sequential actions.

Action Recognition Data Augmentation +2

Pose-Guided Graph Convolutional Networks for Skeleton-Based Action Recognition

no code implementations10 Oct 2022 Han Chen, Yifan Jiang, Hanseok Ko

Graph convolutional networks (GCNs), which can model the human body skeletons as spatial and temporal graphs, have shown remarkable potential in skeleton-based action recognition.

Action Recognition Skeleton Based Action Recognition +1

Toward reliable signals decoding for electroencephalogram: A benchmark study to EEGNeX

1 code implementation15 Jul 2022 Xia Chen, Xiangbin Teng, Han Chen, Yafeng Pan, Philipp Geyer

This study examines the efficacy of various neural network (NN) models in interpreting mental constructs via electroencephalogram (EEG) signals.

Brain Computer Interface EEG +1

Action Recognition with Domain Invariant Features of Skeleton Image

no code implementations19 Nov 2021 Han Chen, Yifan Jiang, Hanseok Ko

Due to the fast processing-speed and robustness it can achieve, skeleton-based action recognition has recently received the attention of the computer vision community.

Action Recognition Skeleton Based Action Recognition

A Teacher-Student Framework with Fourier Augmentation for COVID-19 Infection Segmentation in CT Images

no code implementations13 Oct 2021 Han Chen, Yifan Jiang, Hanseok Ko, Murray Loew

Automatic segmentation of infected regions in computed tomography (CT) images is necessary for the initial diagnosis of COVID-19.

Computed Tomography (CT) Segmentation

Identification and Avoidance of Static and Dynamic Obstacles on Point Cloud for UAVs Navigation

no code implementations14 May 2021 Han Chen, Peng Lu

The approach is able to avoid both static obstacles and dynamic ones in the same framework.

Motion Planning

Few-shot Learning for CT Scan based COVID-19 Diagnosis

no code implementations1 Feb 2021 Yifan Jiang, Han Chen, David K. Han, Hanseok Ko

To compensate for the sparseness of labeled data, the proposed method utilizes a large amount of synthetic COVID-19 CT images and adjusts the networks from the source domain (synthetic data) to the target domain (real data) with a cross-domain training mechanism.

Computed Tomography (CT) COVID-19 Diagnosis +2

Design and Implementation of Curriculum System Based on Knowledge Graph

no code implementations23 Dec 2020 Xiaobing Yu, Mike Stahr, Han Chen, Runming Yan

With the fact that the knowledge in each field in university is keeping increasing, the number of university courses is becoming larger, and the content and curriculum system is becoming much more complicated than it used to be, which bring many inconveniences to the course arrangement and analysis.

Unsupervised domain adaptation based COVID-19 CT infection segmentation network

no code implementations23 Nov 2020 Han Chen, Yifan Jiang, Murray Loew, Hanseok Ko

In this paper, we propose an unsupervised domain adaptation based segmentation network to improve the segmentation performance of the infection areas in COVID-19 CT images.

Computed Tomography (CT) Segmentation +1

COVID-19 CT Image Synthesis with a Conditional Generative Adversarial Network

no code implementations29 Jul 2020 Yifan Jiang, Han Chen, Murray Loew, Hanseok Ko

However, training a deep-learning model requires large volumes of data, and medical staff faces a high risk when collecting COVID-19 CT data due to the high infectivity of the disease.

Computed Tomography (CT) COVID-19 Diagnosis +3

Non-Convex Projected Gradient Descent for Generalized Low-Rank Tensor Regression

no code implementations30 Nov 2016 Han Chen, Garvesh Raskutti, Ming Yuan

The two main differences between the convex and non-convex approach are: (i) from a computational perspective whether the non-convex projection operator is computable and whether the projection has desirable contraction properties and (ii) from a statistical upper bound perspective, the non-convex approach has a superior rate for a number of examples.

regression

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