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hybrid-model optimization algorithm based on the Gaussian process and particle swarm optimization for mixed-variable Research Article

Han YAN, Chongquan ZHONG, Yuhu WU, Liyong ZHANG, Wei LU

Frontiers of Information Technology & Electronic Engineering 2023, Volume 24, Issue 11,   Pages 1557-1573 doi: 10.1631/FITEE.2200515

Abstract: s (CNNs) have been developed quickly in many real-world fields. However, CNN’s performance depends heavily on its hyperparameters, while finding suitable hyperparameters for CNNs working in application fields is challenging for three reasons: (1) the problem of encoding for different types of hyperparameters in CNNs, (2) expensive computational costs in evaluating candidate hyperparameter configuration, and (3) the problem of ensuring convergence rates and model performance during hyperparameter search. To overcome these problems and challenges, a hybrid-model optimization algorithm is proposed in this paper to search suitable hyperparameter configurations automatically based on the and (GPPSO) algorithm. First, a new encoding method is designed to efficiently deal with the CNN hyperparameter problem. Second, a hybrid-surrogate-assisted model is proposed to reduce the high cost of evaluating candidate hyperparameter configurations. Third, a novel activation function is suggested to improve the model performance and ensure the convergence rate. Intensive experiments are performed on imageclassification benchmark datasets to demonstrate the superior performance of GPPSO over state-of-the-art methods. Moreover, a case study on metal fracture diagnosis is carried out to evaluate the GPPSO algorithm performance in practical applications. Experimental results demonstrate the effectiveness and efficiency of GPPSO, achieving accuracy of 95.26% and 76.36% only through 0.04 and 1.70 GPU days on the CIFAR-10 and CIFAR-100 datasets, respectively.

Keywords： Convolutional neural network     Gaussian process     Hybrid model     Hyperparameter optimization     Mixed-variable    

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Data Centric Design: A New Approach to Design of Microstructural Material Systems Article

Wei Chen, Akshay Iyer, Ramin Bostanabad

Engineering 2022, Volume 10, Issue 3,   Pages 89-98 doi: 10.1016/j.eng.2021.05.022

Abstract: storage, microstructure characterization and reconstruction (MCR), machine learning (ML), materials modeling

Keywords： Materials informatics     Machine learning     Microstructure     Reconstruction     Bayesian optimization     Mixed-variablemodeling     Dimension reduction     Materials design    

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Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Frontiers of Mechanical Engineering 2022, Volume 17, Issue 3, doi: 10.1007/s11465-022-0691-5

Abstract: This study traces the development of dexterous hand research and proposes a novel antagonistic variablefinger mechanism not only achieves passive compliance against physical impacts, but also implements the variable

Keywords： multifingered hand     mechanism design     robot safety     variable stiffness actuator    

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A neural network-based production process modeling and variable importance analysis approach in corn

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 3,   Pages 358-371 doi: 10.1007/s11705-022-2190-y

Abstract: In this paper, a neural network-based production process modeling and variable importance analysis approachdimensionality reduction, multilayer perceptron/convolutional neural network/recurrent neural network based modelingUltimately, variable importance analysis is carried out by the extended weight connection method, and

Keywords： big data     corn to sugar factory     neural network     variable importance analysis    

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Electromagnetic interference modeling and suppression techniques in variable-frequency drive systems

Le YANG, Shuo WANG, Jianghua FENG

Frontiers of Mechanical Engineering 2018, Volume 13, Issue 3,   Pages 329-353 doi: 10.1007/s11465-018-0466-1

Abstract: Electromagnetic interference (EMI) causes electromechanical damage to the motors and degrades the reliability of variable-frequencyIn this article, EMI modeling techniques for different function units in a VFD system, including inductionThe EMI models for the motors are categorized based on modeling techniques and model topologies.Modeling techniques for conventional rectifier-inverter systems are also summarized.

Keywords： variable-frequency drive (VFD)     electromagnetic interference (EMI)     motor drive modeling     EMI noise suppression    

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Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Frontiers of Structural and Civil Engineering 2021, Volume 15, Issue 4,   Pages 1016-1024 doi: 10.1007/s11709-021-0751-7

Abstract: This study investigated the use of recycled tire-derived aggregate (TDA) mixed with kaolin as a methodThirteen 1g physical modeling tests were prepared in a rigid box of 0.6 m × 0.9 m in plan and 0.6 m inweight) of powdery, shredded, small-sized granular (G 1–4 mm) or large-sized granular (G 5–8 mm) TDA was mixedWhen kaolin mixed with 20% G (5–8 mm), the UBC showed a threefold increase over that for the unreinforcedIt was observed that the UBC calculated using finite element modeling overestimated the experimental

Keywords： kaolin     physical modeling tests     stabilization     numerical modeling    

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Optimization and modeling of biohydrogen production by mixed bacterial cultures from raw cassava starch

Shaojie Wang,Zhihong Ma,Ting Zhang,Meidan Bao,Haijia Su

Frontiers of Chemical Science and Engineering 2017, Volume 11, Issue 1,   Pages 100-106 doi: 10.1007/s11705-017-1617-3

Abstract: The production of bio-hydrogen from raw cassava starch via a mixed-culture dark fermentation process

Keywords： cassava     biohydrogen     mixed cultures     kinetics    

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Framework based on building information modeling, mixed reality, and a cloud platform to support information

Berardo NATICCHIA, Alessandra CORNELI, Alessandro CARBONARI

Frontiers of Engineering Management 2020, Volume 7, Issue 1,   Pages 131-141 doi: 10.1007/s42524-019-0071-y

Abstract: The introduction of building information modeling (BIM) in the construction industry can provide a valuableMoreover, mixed reality is proposed to support specific information that is relevant to geometric features

Keywords： information flow management     BIM     mixed reality     common data environment     facility management    

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Comprehensive kinetostatic modeling and morphology characterization of cable-driven continuum robots

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 3, doi: 10.1007/s11465-023-0756-0

Abstract: In this study, a general kinetostatic modeling and morphology characterization methodology that comprehensivelyFirst, a novel cable-hole friction model with the variable friction coefficient and adaptive friction

Keywords： kinetostatic modeling     morphology characterization     variable friction     continuum robots     in-situ   

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Iteration framework for solving mixed lubrication computation problems

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 3,   Pages 635-648 doi: 10.1007/s11465-021-0632-8

Abstract: Smooth surface with full contacts and mixed elastohydrodynamic lubrication is tested for validation.

Keywords： mixed lubrication     discretization formula     relative error     Reynolds equation     asperity    

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Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 3,   Pages 460-469 doi: 10.1007/s11705-019-1881-5

Abstract: Mixed matrix membranes (MMMs) have a composite structure that consists of polymers and fillers, therefore

Keywords： membranes     polymeric     mixed matrix     impurities    

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Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Frontiers in Energy 2012, Volume 6, Issue 3,   Pages 280-284 doi: 10.1007/s11708-012-0203-0

Abstract: Based on the variable heat capacities of the working fluid, the irreversibility coming from the compressionMoreover, the influence of the compression and expansion efficiencies, the variable heat capacities and

Keywords： Miller cycle     variable heat capacity     irreversibility     parametric optimization    

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Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 1,   Pages 32-45 doi: 10.1007/s11465-020-0604-4

Abstract: Passive variable stiffness joints have unique advantages over active variable stiffness joints and areExisting passive variable stiffness joints rely mainly on sensors and special control algorithms, resultingThe variable stiffness mechanism can automatically adjust joint stiffness in accordance with the magnitudeThe variable stiffness principle is explained, and the design of the variable stiffness mechanism is

Keywords： variable stiffness mechanism     stiffness self-regulation     bionic robot     modeling    

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On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate

Hui Ching FAN, Hong Sen YAN

Frontiers of Mechanical Engineering 2012, Volume 7, Issue 1,   Pages 5-15 doi: 10.1007/s11465-012-0310-y

Abstract:

Without modifying the cam contour, a cam mechanism with a variable input speed trajectory offers an

Keywords： cam mechanism     variable input speed     kinematic design     dynamic design     optimal design    

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Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Frontiers of Mechanical Engineering 2021, Volume 16, Issue 4,   Pages 711-725 doi: 10.1007/s11465-021-0647-1

Abstract: Thus, this paper aims to design a novel variable stiffness actuator (VSA) that can provide safer physicalVSA follows the idea of modular design, mainly including a variable stiffness module and a drive moduleThe variable stiffness module transmits the motion from the drive module in a roundabout manner, makingAs the key component of the variable stiffness module, a stiffness adjustment mechanism with a symmetrical

Keywords： variable stiffness actuator     variable stiffness module     drive module     symmetrical structure     double-deck    

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Title Author Date Type Operation

hybrid-model optimization algorithm based on the Gaussian process and particle swarm optimization for mixed-variable

Han YAN, Chongquan ZHONG, Yuhu WU, Liyong ZHANG, Wei LU

Journal Article

Data Centric Design: A New Approach to Design of Microstructural Material Systems

Wei Chen, Akshay Iyer, Ramin Bostanabad

Journal Article

Mechanical design, modeling, and identification for a novel antagonistic variable stiffness dexterous

Journal Article

A neural network-based production process modeling and variable importance analysis approach in corn

Journal Article

Electromagnetic interference modeling and suppression techniques in variable-frequency drive systems

Le YANG, Shuo WANG, Jianghua FENG

Journal Article

Ultimate bearing capacity of strip footing resting on clay soil mixed with tire-derived aggregates

Journal Article

Optimization and modeling of biohydrogen production by mixed bacterial cultures from raw cassava starch

Shaojie Wang,Zhihong Ma,Ting Zhang,Meidan Bao,Haijia Su

Journal Article

Framework based on building information modeling, mixed reality, and a cloud platform to support information

Berardo NATICCHIA, Alessandra CORNELI, Alessandro CARBONARI

Journal Article

Comprehensive kinetostatic modeling and morphology characterization of cable-driven continuum robots

Journal Article

Iteration framework for solving mixed lubrication computation problems

Journal Article

Perspective of mixed matrix membranes for carbon capture

Shinji Kanehashi, Colin A. Scholes

Journal Article

Effect of variable heat capacities on performance of an irreversible Miller heat engine

Xingmei YE

Journal Article

Design and experimental study of a passive power-source-free stiffness-self-adjustable mechanism

Yuwang LIU, Dongqi WANG, Shangkui YANG, Jinguo LIU, Guangbo HAO

Journal Article

On the improvement design of dynamic characteristics for the roller follower of a variable-speed plate

Hui Ching FAN, Hong Sen YAN

Journal Article

Mechanical design and analysis of a novel variable stiffness actuator with symmetrical pivot adjustment

Journal Article