Search Results for author: Jingxin Zhang

Found 14 papers, 0 papers with code

Maximal electric power generation from varying ocean waves with LC-tuned reactive PTO force

no code implementations12 Apr 2024 Jingxin Zhang, Uzair Bin Tahir, Richard Manasseh

The reactive Power Take Off (PTO) force is the key to maximizing mechanical power absorption and electric power generation of Wave Energy Converters (WECs) from ocean waves with variable frequency, but its study is limited due to its difficulty in physical realization.

Experiment-based deep learning approach for power allocation with a programmable metasurface

no code implementations26 Jul 2023 Jingxin Zhang, Jiawei Xi, Peixing Li, Ray C. C. Cheung, Alex M. H. Wong, Jensen Li

Enabled by the tunability of a programmable metasurface, large sets of experimental data in various configurations can be collected for DNN training.

SCCAM: Supervised Contrastive Convolutional Attention Mechanism for Ante-hoc Interpretable Fault Diagnosis with Limited Fault Samples

no code implementations3 Feb 2023 Mengxuan Li, Peng Peng, Jingxin Zhang, Hongwei Wang, Weiming Shen

The comprehensive results demonstrate that the proposed SCCAM method can achieve better performance compared with the state-of-the-art methods on fault classification and root cause analysis.

Continual learning-based probabilistic slow feature analysis for multimode dynamic process monitoring

no code implementations23 Feb 2022 Jingxin Zhang, Donghua Zhou, Maoyin Chen, Xia Hong

In this paper, a novel multimode dynamic process monitoring approach is proposed by extending elastic weight consolidation (EWC) to probabilistic slow feature analysis (PSFA) in order to extract multimode slow features for online monitoring.

Continual Learning

Structure Parameter Optimized Kernel Based Online Prediction with a Generalized Optimization Strategy for Nonstationary Time Series

no code implementations18 Aug 2021 Jinhua Guo, Hao Chen, Jingxin Zhang, Sheng Chen

For structure parameters, the kernel dictionary is selected by some sparsification techniques with online selective modeling criteria, and moreover the kernel covariance matrix is intermittently optimized in the light of the covariance matrix adaptation evolution strategy (CMA-ES).

Time Series Time Series Analysis

Self-learning sparse PCA for multimode process monitoring

no code implementations7 Aug 2021 Jingxin Zhang, Donghua Zhou, Maoyin Chen

This paper proposes a novel sparse principal component analysis algorithm with self-learning ability for successive modes, where synaptic intelligence is employed to measure the importance of variables and a regularization term is added to preserve the learned knowledge of previous modes.

Self-Learning

PET Image Reconstruction with Multiple Kernels and Multiple Kernel Space Regularizers

no code implementations4 Mar 2021 Shiyao Guo, Yuxia Sheng, Shenpeng Li, Li Chai, Jingxin Zhang

To reduce the reconstruction error and the sensitivity to iteration number, we present a general class of multi-kernel matrices and two regularizers consisting of kernel image dictionary and kernel image Laplacian quatradic, and use them to derive the single-kernel regularized EM and multi-kernel regularized EM algorithms for PET image reconstruction.

Dictionary Learning Image Reconstruction

Monitoring nonstationary processes based on recursive cointegration analysis and elastic weight consolidation

no code implementations21 Jan 2021 Jingxin Zhang, Donghua Zhou, Maoyin Chen

In this paper, recursive cointegration analysis (RCA) is first proposed to distinguish the real faults from normal systems changes, where the model is updated once a new normal sample arrives and can adapt to slow change of cointegration relationship.

Monitoring multimode processes: a modified PCA algorithm with continual learning ability

no code implementations13 Dec 2020 Jingxin Zhang, Donghua Zhou, Maoyin Chen

The computational complexity and key parameters are discussed to further understand the relationship between PCA and the proposed algorithm.

Continual Learning

Process monitoring based on orthogonal locality preserving projection with maximum likelihood estimation

no code implementations13 Dec 2020 Jingxin Zhang, Maoyin Chen, Hao Chen, Xia Hong, Donghua Zhou

By integrating two powerful methods of density reduction and intrinsic dimensionality estimation, a new data-driven method, referred to as OLPP-MLE (orthogonal locality preserving projection-maximum likelihood estimation), is introduced for process monitoring.

Density Estimation Dimensionality Reduction +1

An improved mixture of probabilistic PCA for nonlinear data-driven process monitoring

no code implementations12 Dec 2020 Jingxin Zhang, Hao Chen, Songhang Chen, Xia Hong

To realize this purpose, the technique of a mixture of probabilistic principal component analysers is utilized to establish the model of the underlying nonlinear process with local PPCA models, where a novel composite monitoring statistic is proposed based on the integration of two monitoring statistics in modified PPCA-based fault detection approach.

Fault Detection

Bayesian Hypothesis Testing for Block Sparse Signal Recovery

no code implementations22 Aug 2015 Mehdi Korki, Hadi Zayyani, Jingxin Zhang

The Block-BHTA comprises the detection and recovery of the supports, and the estimation of the amplitudes of the block sparse signal.

Two-sample testing

Iterative Bayesian Reconstruction of Non-IID Block-Sparse Signals

no code implementations7 Dec 2014 Mehdi Korki, Jingxin Zhang, Cishen Zhang, Hadi Zayyani

Unlike the existing algorithms for block sparse signal recovery which assume the cluster structure of the nonzero elements of the unknown signal to be independent and identically distributed (i. i. d.

Multichannel Compressive Sensing MRI Using Noiselet Encoding

no code implementations21 Jul 2014 Kamlesh Pawar, Gary F. Egan, Jingxin Zhang

In CS-MRI, the randomly under-sampled Fourier matrix is used as the measurement matrix and the wavelet transform is usually used as sparsifying transform matrix.

Compressive Sensing

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