Search Results for author: Wenrui Zhang

Found 13 papers, 5 papers with code

Self-Supervised Time Series Representation Learning via Cross Reconstruction Transformer

1 code implementation20 May 2022 Wenrui Zhang, Ling Yang, Shijia Geng, Shenda Hong

In this paper, we aim at learning representations for time series from a new perspective and propose Cross Reconstruction Transformer (CRT) to solve the aforementioned problems in a unified way.

Contrastive Learning Representation Learning +2

A Deep Bayesian Neural Network for Cardiac Arrhythmia Classification with Rejection from ECG Recordings

1 code implementation26 Feb 2022 Wenrui Zhang, Xinxin Di, Guodong Wei, Shijia Geng, Zhaoji Fu, Shenda Hong

Finally, with the help of a clinician, we conduct case studies to explain the results of large uncertainties and incorrect predictions with small uncertainties.

A Simple Self-Supervised ECG Representation Learning Method via Manipulated Temporal-Spatial Reverse Detection

no code implementations25 Feb 2022 Wenrui Zhang, Shijia Geng, Shenda Hong

To verify the effectiveness of the proposed method, we perform a downstream task to detect atrial fibrillation (AF) which is one of the most common ECG tasks.

Representation Learning Self-Supervised Learning

MetaVA: Curriculum Meta-learning and Pre-fine-tuning of Deep Neural Networks for Detecting Ventricular Arrhythmias based on ECGs

no code implementations25 Feb 2022 Wenrui Zhang, Shijia Geng, Zhaoji Fu, Linlin Zheng, Chenyang Jiang, Shenda Hong

MAML is expected to better transfer the knowledge from a large dataset and use only a few recordings to quickly adapt the model to a new person.

Meta-Learning

Composing Recurrent Spiking Neural Networks using Locally-Recurrent Motifs and Risk-Mitigating Architectural Optimization

no code implementations4 Aug 2021 Wenrui Zhang, Hejia Geng, Peng Li

The small size of the motifs and sparse inter-motif connectivity leads to an RSNN architecture scalable to large network sizes.

Backpropagated Neighborhood Aggregation for Accurate Training of Spiking Neural Networks

no code implementations22 Jun 2021 Yukun Yang, Wenrui Zhang, Peng Li

While backpropagation (BP) has been applied to spiking neural networks (SNNs) achieving encouraging results, a key challenge involved is to backpropagate a continuous-valued loss over layers of spiking neurons exhibiting discontinuous all-or-none firing activities.

Skip-Connected Self-Recurrent Spiking Neural Networks with Joint Intrinsic Parameter and Synaptic Weight Training

no code implementations23 Oct 2020 Wenrui Zhang, Peng Li

Moreover, we propose a new backpropagation (BP) method called backpropagated intrinsic plasticity (BIP) to further boost the performance of ScSr-SNNs by training intrinsic model parameters.

Temporal Spike Sequence Learning via Backpropagation for Deep Spiking Neural Networks

1 code implementation NeurIPS 2020 Wenrui Zhang, Peng Li

Spiking neural networks (SNNs) are well suited for spatio-temporal learning and implementations on energy-efficient event-driven neuromorphic processors.

Image Classification

Boosting Throughput and Efficiency of Hardware Spiking Neural Accelerators using Time Compression Supporting Multiple Spike Codes

no code implementations10 Sep 2019 Changqing Xu, Wenrui Zhang, Yu Liu, Peng Li

Using spiking speech and image recognition datasets, we demonstrate the feasibility of supporting large time compression ratios of up to 16x, delivering up to 15. 93x, 13. 88x, and 86. 21x improvements in throughput, energy dissipation, the tradeoffs between hardware area, runtime, energy, and classification accuracy, respectively based on different spike codes on a Xilinx Zynq-7000 FPGA.

Multiple Linear Regression Haze-removal Model Based on Dark Channel Prior

no code implementations25 Apr 2019 Binghan Li, Wenrui Zhang, Mi Lu

The RESIDE dataset provides enough synthetic hazy images and their corresponding groundtruth images to train and test.

regression SSIM

Hybrid Macro/Micro Level Backpropagation for Training Deep Spiking Neural Networks

1 code implementation NeurIPS 2018 Yingyezhe Jin, Wenrui Zhang, Peng Li

We evaluate the proposed HM2-BP algorithm by training deep fully connected and convolutional SNNs based on the static MNIST [14] and dynamic neuromorphic N-MNIST [26].

speech-recognition Speech Recognition

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