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Optimized Spatial Filter Selection for Transfer Learning in Brain-Computer Interface

Optimized Spatial Filter Selection for Transfer Learning in ...

Metrology for Extended Reality, Artificial Intelligence and Neural Engineering (MetroXRAINE), IEEE International Conference on

作者： Mohamed A A Mohamed Joshua Giles Mahnaz Arvaneh Automatic control and Systems Engineering Department University of Sheffield Sheffield UK

ISBN: (数字)9798350378009

ISBN: (纸本)9798350378016

The Common Spatial Patterns (CSP) algorithm has shown great efficacy in extracting features for Brain-Computer Interfaces (BCIs), particularly in motor imagery BCIs. However, CSP performs poorly when dealing with limited labeled data, which leads to long calibration time at the beginning of each session. To overcome this challenge, we leverage source data, i.e., labeled data from other subjects, to transfer knowledge across subjects. This work proposes a novel approach termed Scaled and Warped CSP-based Transfer Learning (SW-CSP-TL). This method aligns source data with the temporal and amplitude structure of target data before computing CSP filters, ensuring optimization for capturing discriminative features relevant to the target domain. We evaluate the proposed SW-CSP-TL algorithm using the publicly available dataset 2a from BCI Competition IV and compare its performance with that of the classical CSP algorithm and the transfer learning CSP algorithm (CSP-TL) without amplitude scaling and temporal warping. Our algorithm exhibits superior performance particularly when the training data size is relatively small. Results demonstrate that for 5 and 15 training trials per class from the target session, SW-CSP-TL outperformed the classical CSP by an average of 10%, and 8%, respectively.

关键词： Training Transfer learning Training data Neural engineering Feature extraction Spatial filters Motors Brain-computer interfaces Standards Optimization

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On Approximate Opacity of Stochastic control systems

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IEEE Transactions on automatic control 2024年第6期70卷 3846-3861页

作者： Liu, Siyuan Yin, Xiang Dimarogonas, Dimos V. Zamani, Majid Kth Royal Institute of Technology Division of Decision and Control Systems Stockholm Sweden Shanghai Jiao Tong University and Key Lab of System Control & Information Processing Ministry of Education Department of Automation Shanghai China University of Colorado Boulder Computer Science Department CO80309 United States Ludwig Maximilian University of Munich Computer Science Department Germany

This paper investigates an important class of information-flow security property called opacity for stochastic control systems. Opacity captures whether a system's secret behavior (a subset of the system's behavior that is considered to be critical) can be kept from outside observers. Existing works on opacity for control systems only provide a binary characterization of the system's security level by determining whether the system is opaque or not. In this work, we introduce a quantifiable measure of opacity that considers the likelihood of satisfying opacity for stochastic control systems modeled as general Markov decision processes (gMDPs). We also propose verification methods tailored to the new notions of opacity for finite gMDPs by using value iteration techniques. Then, a new notion called approximate opacity-preserving stochastic simulation relation is proposed, which captures the distance between two systems' behaviors in terms of preserving opacity. Based on this new system relation, we show that one can verify opacity for stochastic control systems using their abstractions (modeled as finite gMDPs). We also discuss how to construct such abstractions for a class of gMDPs under certain stability conditions. © 1963-2012 IEEE.

关键词： Stochastic control systems

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Energy and Exergy Analysis of Pyramid-Type Solar Still Coupled with Magnetic and Electrical Effects by Using Matlab Simulation

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Frontiers in Heat and Mass Transfer 2024年第1期22卷 217-262页

作者： Karrar A.Hammoodi Hayder A.Dhahad Wissam H.Alawee Z.M.Omara Air Conditioning Engineering Department Faculty of EngineeringWarith Al-Anbiyaa UniversityBaghdadIraq Mechanical Engineering Department University of TechnologyBaghdadIraq Control and Systems Engineering Department University of TechnologyBaghdadIraq Mechanical Engineering Department Faculty of EngineeringKafrelsheikh UniversityKafrelsheikhEgypt

In the face of an escalating global water crisis,countries worldwide grapple with the crippling effects of scarcity,jeopardizing economic progress and hindering societal *** energy emerges as a beacon of hope,offering a sustainable and environmentally friendly solution to *** distillation technology,harnessing the power of the sun,transforms seawater into freshwater,expanding the availability of this precious *** solar still performance under specific climatic conditions and evaluating different configurations is crucial for practical implementation and widespread adoption of solar *** this study,we conducted theoretical investigations on three distinct solar still configurations to evaluate their performance under Baghdad’s climatic *** solar stills analyzed include the passive solar still,themodified solar still coupled with a magnetic field,and themodified solar still coupled with bothmagnetic and electrical *** results proved that the evaporation heat transfer coefficient peaked at 14:00,reaching 25.05 W/m^(2).℃for the convention pyramid solar still(CPSS),32.33 W/m^(2).℃for the magnetic pyramid solar still(MPSS),and 40.98 W/m^(2).℃for elecro-magnetic pyramid solar still(EMPSS),highlighting their efficiency in converting solar energy to ***,exergy efficiency remained notably lower,at 1.6%,5.31%,and 7.93%for the three still types,even as energy efficiency reached its maximum of 18.6%at 14:00 with a corresponding peak evaporative heat of 162.4 W/m^(2).

关键词： Pyramid solar still solar desalination energy and exergy analysis innovative solar still technique theoretical study Matlab

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Digital Twin and Virtual Reality: A Co-simulation Environment for an Educational Hydraulic Workstation 17

Digital Twin and Virtual Reality: A Co-simulation Environmen...

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17th International Conference on Development and Application systems, DAS 2024

作者： Hrib, Fanica-Valeriu Iancu, Andrei-Iulian Dosoftei, Constantin-Catalin Department of Machine Manufacturing Technology "Gheorghe Asachi" Technical University of Iasi Iasi Romania Department of Automatic Control and Applied Informatics Gheorghe Asachi" Technical University of Iasi Iasi Romania

ISBN: (纸本)9798350349290

Hydraulic system comprehension forms the pillar ofnumerous engineering fields;however, its academic assimilation remains intricate. Addressing this, our research introduces a digital twin-enabled virtual hydraulic workstation simulator developed in Automation Studio™. This simulator mirrorsa tangible hydraulic workstation, including its multifaceted components, to enhance the pedagogical paradigm of hydraulic education. We ensure the symbiosis of theoretical understanding and practical application by meticulously modeling 3D hydraulic components and executing analogous simulations. Our key findings spotlight the utility of time-dependent system behavior graphs in bolstering educational insights. The paper underscores the significance of digital twin solutions in university programs, mainly when physical resources are scarce, reinforcing educational technology’s potential to facilitate studentengagement in technically dense arenas. ©2024 IEEE.

关键词： Three dimensional computer graphics

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The value of formative evaluation in an education program

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International Journal of Applied Systemic Studies 2022年第4期9卷 381-388页

作者： Tsipianitis, Dimitris Mandellos, Georgios Systems and Automatic Control Division Electrical and Computer Engineering Department University of Patras RionGR-26504 Greece Telecommunications and Information Technology Division Electrical and Computer Engineering Department University of Patras RionGR-26504 Greece

Evaluation is a process that compares the results with the target, an initial situation with the final one. ‘Evaluate’ means making an assessment based on some measure or information and referring to some criteria. The Formative evaluation is a process which is used by trainers and trainees and provides feedback on updating current teaching and learning methods in order to improve trainer’s achievement in relation of teaching goals. In this case study a research was carried out using the technique of formative evaluation in order to evaluate two thematic areas with the cooperation of the program’s leaders. The aim of the study was to extract conclusions and opinions about the program’s value, the achievement goals and the organisation implementation requirements and how all this results will been feed backed to program managers and policymakers with the appropriate information which are necessary to adopt appropriate corrective interventions for programs quality improvement. Copyright © 2022 Inderscience Enterprises Ltd.

关键词： Quality control

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A Pre-Distillation Strategy for Object Detection Task 9

A Pre-Distillation Strategy for Object Detection Task

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9th International Conference on control, Decision and Information Technologies, CoDIT 2023

作者： Lin, Yu-Chen Chen, Wen-Hui Chen, Hung-Cheng Wang, Chia-Hung Feng Chia University Department of Automatic Control Engineering Taichung Taiwan Graduate Institute of Automation Technology National Taipei University of Technology Taipei Taiwan

ISBN: (纸本)9798350311402

In this paper, we propose a novel model compression method based on knowledge distillation, that is called Pre-Distillation, for object detection task. First, the full model is 'squashed' (by the instructor) to generate key information (a.k.a. attention mechanism), and it is also referred to as dataset condensation;it is then provided for lightweight model learning (for the student). Students can study and preview the course through lightweight models with key information that is compressed by the instructor. Additionally, students can also be able to improve their efficiency in learning and acquire integrative understanding of the subject through supplementary materials in which the they will be observing hidden information within the ground truth. This paper is verified and quantified by the public databases of Pascal VOC. The results show that the previewing distillation strategy developed in this paper has higher accuracy. The accuracy of ResNet-101 is 74.02%, which is 2.28% higher than that of the un-distilled 71.74%. The method in this paper is an algorithm-based performance improvement method. Our proposed scheme is a high-efficiency distillation strategy that does not need to change the network architecture and also can avoid the occurrence of model overfitting and speed up model training. © 2023 IEEE.

关键词： Distillation

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Two approaches (GC-ECD and electrochemical sensors signals processing) to the determination of carbonyl compounds as markers of air pollution 26

Two approaches (GC-ECD and electrochemical sensors signals p...

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26th IEEE Signal Processing: Algorithms, Architectures, Arrangements, and Applications, SPA 2023

作者： Bronczyk, Karolina Adamski, Michal Dabrowska, Agata Konieczka, Adam Dabrowski, Adam Adam Mickiewicz University Faculty of Chemistry Department of Trace Analysis Poznań Poland Institute of Automatic Control and Robotics Poznan University of Technology Division of Signal Processing and Electronic Systems Poznań Poland

ISBN: (纸本)9798350304985

This article presents the application possibilities of unmanned aerial vehicles (UAVs) for the rapid and efficient determination of carbonyl compounds: formaldehyde and acetaldehyde concentrations in gaseous environmental samples. One of the described methods is the use of special electrochemical sensors (PMS5003 and SEN0231) to measure air pollution in real time (every 10 seconds). The second method involves adsorbing gas samples into sorption tubes with XAD-2 cartridges and uses chromatographic analysis: gas chromatography coupled with a selective electron capture detector (GC-ECD). The proposed analytical technique allows the determination of carbonyl compounds at low concentration levels (μg/m3) using pre-derivatization of samples with the reagent 2,3,4,5,6-pentafluorobenzyl-hydroxylamine (PFBOA). Comparing the results obtained from electrochemical sensors and chromatographic analysis, we can conclude that there are discrepancies between the determined concentrations of formaldehyde in the analyzed gas samples. © 2023 Division of Signal Processing and Electronic systems, Poznan University of technology (DSPES PUT).

关键词： Formaldehyde

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Business intelligent connection between quality and evaluation methods: a case study

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International Journal of Applied Systemic Studies 2022年第4期9卷 330-343页

作者： Mandellos, Georgios Tsipianitis, Dimitris Telecommunications and Information Technology Division Electrical and Computer Engineering Department University of Patras RionGR-26504 Greece Systems and Automatic Control Division Electrical and Computer Engineering Department University of Patras RionGR-26504 Greece

Nowadays, information and knowledge represent the fundamental wealth of an organisation. Enterprises try to utilise this wealth to gain advantage when making decisions such as a project’s acceptance. After a project finishes, a quality management plan defines its quality level. The business intelligence theories help the individual to evaluate the proposed plan in order to target the project’s results. But, do all the evaluation methods have the same reliability? We check the project’s quality by using paper and online questionnaire administration. Although the scope is the same, there are differences, giving different results. So, we intelligently investigated the quality of the university educational process. The results show that the administration method has a significant effect on overall results. Thus, the quality check of a project using questionnaires needs to have an attentive design, avoid points that introduce uncertainties and able to show the real opinion of the respondents. Copyright © 2022 Inderscience Enterprises Ltd.

关键词： Surveys

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A New Hybrid Model for Segmentation of the Skin Lesion Based on Residual Attention U-Net

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Computers, Materials & Continua 2023年第6期75卷 5177-5192页

作者： Saleh Naif Almuayqil Reham Arnous Noha Sakr Magdy M.Fadel Department of Information Systems College of Computer and Information SciencesJouf UniversitySakakaSaudi Arabia Department of Communications and Electronics Delta Higher Institute for Engineering and Technology(DHIET)MansouraEgypt Computers Engineering and Control Systems Department Faculty of EngineeringMansoura UniversityMansouraEgypt

Skin segmentation participates significantly in various biomedical applications,such as skin cancer identification and skin lesion *** paper presents a novel framework for segmenting the *** framework contains two main stages:The first stage is for removing different types of noises from the dermoscopic images,such as hair,speckle,and impulse noise,and the second stage is for segmentation of the dermoscopic images using an attention residual U-shaped Network(U-Net).The framework uses variational Autoencoders(VAEs)for removing the hair noises,the Generative Adversarial Denoising Network(DGAN-Net),the Denoising U-shaped U-Net(D-U-NET),and Batch Renormalization U-Net(Br-U-NET)for remov-ing the speckle noise,and the Laplacian Vector Median Filter(MLVMF)for removing the impulse *** the second main stage,the residual attention u-net was used for *** framework achieves(35.11,31.26,27.01,and 26.16),(36.34,33.23,31.32,and 28.65),and(36.33,32.21,28.54,and 27.11)for removing hair,speckle,and impulse noise,respectively,based on Peak Signal Noise Ratio(PSNR)at the level of(0.1,0.25,0.5,and 0.75)of *** framework also achieves an accuracy of nearly 94.26 in the dice score in the process of segmentation before removing noise and 95.22 after removing different types of *** experiments have shown the efficiency of the used model in removing noise according to the structural similarity index measure(SSIM)and PSNR and in the segmentation process as well.

关键词： Skin tumor speckle noise impulse noise hair noise deep learning segmentation

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Multi-objective robust controller synthesis with integral quadratic constraints in discrete-time

arXiv

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arXiv 2025年

作者： Schwenkel, Lukas Köhler, Johannes Müller, Matthias A. Scherer, Carsten W. Allgöwer, Frank University of Stuttgart Institute for Systems Theory and Automatic Control Germany ETH Zürich Institute for Dynamical Systems and Control Switzerland Leibniz University Hannover Institute for Automatic Control Germany University of Stuttgart Department of Mathematics Germany

This article presents a novel framework for the robust controller synthesis problem in discrete-time systems using dynamic Integral Quadratic Constraints (IQCs). We present an algorithm to minimize closed-loop performance measures such as the H∞-norm, the energy-to-peak gain, the peak-to-peak gain, or a multi-objective mix thereof. While IQCs provide a powerful tool for modeling structured uncertainties and nonlinearities, existing synthesis methods are limited to the H∞-norm, continuous-time systems, or special system structures. By minimizing the energy-to-peak and peak-to-peak gain, the proposed synthesis can be utilized to bound the peak of the output, which is crucial in many applications requiring robust constraint satisfaction, input-to-state stability, reachability analysis, or other pointwise-in-time bounds. Numerical examples demonstrate the robustness and performance of the controllers synthesized with the proposed algorithm. Copyright © 2025, The Authors. All rights reserved.

关键词： Robust control

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