Search Results for author: Yuwen Li

Found 8 papers, 1 papers with code

GraphCleaner: Detecting Mislabelled Samples in Popular Graph Learning Benchmarks

1 code implementation30 May 2023 Yuwen Li, Miao Xiong, Bryan Hooi

Label errors have been found to be prevalent in popular text, vision, and audio datasets, which heavily influence the safe development and evaluation of machine learning algorithms.

Graph Learning

A Causal Intervention Scheme for Semantic Segmentation of Quasi-periodic Cardiovascular Signals

no code implementations19 Sep 2022 Xingyao Wang, Yuwen Li, Hongxiang Gao, Xianghong Cheng, Jianqing Li, Chengyu Liu

To address this issue, we establish a structural causal model as the foundation to customize the intervention approaches on Am and Ar, respectively.

Attribute Segmentation +1

Single Image Deraining via Rain-Steaks Aware Deep Convolutional Neural Network

no code implementations16 Sep 2022 Chaobing Zheng, Yuwen Li, Shiqian Wu

It is challenging to remove rain-steaks from a single rainy image because the rain steaks are spatially varying in the rainy image.

Autonomous Navigation Single Image Deraining

Adaptive Weighted Guided Image Filtering for Depth Enhancement in Shape-From-Focus

no code implementations18 Jan 2022 Yuwen Li, Zhengguo Li, Chaobing Zheng, Shiqian Wu

In order to preserve the edges accurately in the refined depth map, the guidance image is constructed from the multi-focus image sequence, and the coefficient of the AWGIF is utilized to suppress the noise while enhancing the fine depth details.

Spectral Reconstruction

Single image dehazing via combining the prior knowledge and CNNs

no code implementations10 Nov 2021 Yuwen Li, Chaobing Zheng, Shiqian Wu, Wangming Xu

If the transmission map of a pixel is small, the base layer of the haze image is used to recover a haze-free image via atmospheric scattering model, finally.

Image Dehazing Single Image Dehazing +1

Neural networks with trainable matrix activation functions

no code implementations21 Sep 2021 Yuwen Li, Zhengqi Liu, Ludmil Zikatanov

The training process of neural networks usually optimize weights and bias parameters of linear transformations, while nonlinear activation functions are pre-specified and fixed.

Temporal-Framing Adaptive Network for Heart Sound Segmentation without Prior Knowledge of State Duration

no code implementations9 May 2020 Xingyao Wang, Chengyu Liu, Yuwen Li, Xianghong Cheng, Jianqing Li, Gari D. Clifford

Moreover, the TFAN-based method achieved an overall F1 score of 99. 2%, 94. 4%, 91. 4% on LEVEL-I, -II and -III data respectively, compared to 98. 4%, 88. 54% and 79. 80% for the current state-of-the-art method.

Segmentation Time Series Analysis

Quasi-optimal adaptive mixed finite element methods for controlling natural norm errors

no code implementations8 Jul 2019 Yuwen Li

In particular, we obtain new quasi-optimal adaptive mixed methods for the Hodge Laplace, Poisson, and Stokes equations.

Numerical Analysis Numerical Analysis 65N12, 65N15, 65N30, 65N50, 41A25

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