Search Results for author: Yun Zhang

Found 18 papers, 1 papers with code

Soft BPR Loss for Dynamic Hard Negative Sampling in Recommender Systems

no code implementations25 Nov 2022 Kexin Shi, Yun Zhang, BingYi Jing, Wenjia Wang

In recommender systems, leveraging Graph Neural Networks (GNNs) to formulate the bipartite relation between users and items is a promising way.

Recommendation Systems

Epigenetic factor competition reshapes the EMT landscape

no code implementations13 Sep 2022 M. Ali Al-Radhawi, Shubham Tripathi, Yun Zhang, Eduardo D. Sontag, Herbert Levine

In such models, epigenetic factors are usually proposed to act on the chromatin regions directly involved in the expression of relevant genes.

FastBVP-Net: a lightweight pulse simulation network for measuring heart rhythm via facial videos

no code implementations25 Jun 2022 Jialiang Zhuang, YuHeng Chen, Yun Zhang, Xiujuan Zheng

Remote photoplethysmography (rPPG) is a useful camera-based health motioning method that can estimate the heart rate (HR) and heart rate variability (HRV) from facial videos.

Heart rate estimation Heart Rate Variability

Deep Learning-Based Intra Mode Derivation for Versatile Video Coding

no code implementations8 Apr 2022 Linwei Zhu, Yun Zhang, Na Li, Gangyi Jiang, Sam Kwong

To further improve the performance of intra coding in Versatile Video Coding (VVC), an intelligent intra mode derivation method is proposed in this paper, termed as Deep Learning based Intra Mode Derivation (DLIMD).

Multi-class Classification Quantization

Remote blood pressure measurement via spatiotemporal mapping of a short-time facial video

no code implementations7 Mar 2022 Jialiang Zhuang, Bin Li, Yun Zhang, YuHeng Chen, Xiujuan Zheng

Blood pressure (BP) monitoring is vital in daily healthcare, especially for cardiovascular diseases.

Distortion-Aware Loop Filtering of Intra 360^o Video Coding with Equirectangular Projection

no code implementations20 Feb 2022 Pingping Zhang, Xu Wang, Linwei Zhu, Yun Zhang, Shiqi Wang, Sam Kwong

In this paper, we propose a distortion-aware loop filtering model to improve the performance of intra coding for 360$^o$ videos projected via equirectangular projection (ERP) format.

Image Reconstruction

Sphere Face Model:A 3D Morphable Model with Hypersphere Manifold Latent Space

no code implementations4 Dec 2021 Diqiong Jiang, Yiwei Jin, FangLue Zhang, Zhe Zhu, Yun Zhang, Ruofeng Tong, Min Tang

However, the shape parameters of traditional 3DMMs satisfy the multivariate Gaussian distribution while the identity embeddings satisfy the hypersphere distribution, and this conflict makes it challenging for face reconstruction models to preserve the faithfulness and the shape consistency simultaneously.

Face Model Face Reconstruction

A Dynamic 3D Spontaneous Micro-expression Database: Establishment and Evaluation

no code implementations31 Jul 2021 Fengping Wang, Jie Li, Siqi Zhang, Chun Qi, Yun Zhang, Danmin Miao

Micro-expressions are spontaneous, unconscious facial movements that show people's true inner emotions and have great potential in related fields of psychological testing.

DymSLAM:4D Dynamic Scene Reconstruction Based on Geometrical Motion Segmentation

no code implementations10 Mar 2020 Chenjie Wang, Bin Luo, Yun Zhang, Qing Zhao, Lu Yin, Wei Wang, Xin Su, Yajun Wang, Chengyuan Li

The only input of DymSLAM is stereo video, and its output includes a dense map of the static environment, 3D model of the moving objects and the trajectories of the camera and the moving objects.

Motion Segmentation

SUR-FeatNet: Predicting the Satisfied User Ratio Curvefor Image Compression with Deep Feature Learning

1 code implementation7 Jan 2020 Hanhe Lin, Vlad Hosu, Chunling Fan, Yun Zhang, Yuchen Mu, Raouf Hamzaoui, Dietmar Saupe

We then use deep feature learning to predict samples of the SUR curve and apply the method of least squares to fit the parametric model to the predicted samples.

Image Compression Transfer Learning

Stereo-based Multi-motion Visual Odometry for Mobile Robots

no code implementations15 Oct 2019 Qing Zhao, Bin Luo, Yun Zhang

In this letter, a stereo-based multi-motion visual odometry method is proposed to acquire the poses of the robot and other moving objects.

Motion Segmentation Visual Odometry

A Novel Deep Neural Network Based Approach for Sparse Code Multiple Access

no code implementations4 Jun 2019 Jinzhi Lin, Shengzhong Feng, Zhile Yang, Yun Zhang, Yong Zhang

Furthermore, by manipulating the mapping vectors, an autoencoder is able to generalize SCMA, thus a dense code multiple access (DCMA) scheme is proposed.

Attention Distillation for Learning Video Representations

no code implementations5 Apr 2019 Miao Liu, Xin Chen, Yun Zhang, Yin Li, James M. Rehg

To this end, we make use of attention modules that learn to highlight regions in the video and aggregate features for recognition.

Action Recognition Video Recognition

R$^3$-Net: A Deep Network for Multi-oriented Vehicle Detection in Aerial Images and Videos

no code implementations16 Aug 2018 Qingpeng Li, Lichao Mou, Qizhi Xu, Yun Zhang, Xiao Xiang Zhu

In this paper, we propose a novel deep network, called rotatable region-based residual network (R$^3$-Net), to detect multi-oriented vehicles in aerial images and videos.

Motion Estimation Region Proposal

Neighborhood Preserved Sparse Representation for Robust Classification on Symmetric Positive Definite Matrices

no code implementations27 Jan 2016 Ming Yin, Shengli Xie, Yi Guo, Junbin Gao, Yun Zhang

Due to its promising classification performance, sparse representation based classification(SRC) algorithm has attracted great attention in the past few years.

Classification General Classification +2

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