检索结果-内蒙古大学图书馆

arXiv 2020年

作者： Cai, Yaoming Zhang, Zijia Cai, Zhihua Liu, Xiaobo Jiang, Xinwei Yan, Qin School of Computer Science China University of Geosciences Wuhan430074 China School of Automation Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems China University of Geosciences Wuhan430074 China

Hyperspectral image (HSI) clustering is a challenging task due to the high complexity of HSI data. Subspace clustering has been proven to be powerful for exploiting the intrinsic relationship between data points. Despite the impressive performance in the HSI clustering, traditional subspace clustering methods often ignore the inherent structural information among data. In this paper, we revisit the subspace clustering with graph convolution and present a novel subspace clustering framework called Graph Convolutional Subspace Clustering (GCSC) for robust HSI clustering. Specifically, the framework recasts the self-expressiveness property of the data into the non-Euclidean domain, which results in a more robust graph embedding dictionary. We show that traditional subspace clustering models are the special forms of our framework with the Euclidean data. Basing on the framework, we further propose two novel subspace clustering models by using the Frobenius norm, namely Efficient GCSC (EGCSC) and Efficient Kernel GCSC (EKGCSC). Both models have a globally optimal closed-form solution, which makes them easier to implement, train, and apply in practice. Extensive experiments on three popular HSI datasets demonstrate that EGCSC and EKGCSC can achieve state-of-the-art clustering performance and dramatically outperforms many existing methods with significant margins. Copyright © 2020, The Authors. All rights reserved.

关键词： Spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Introduction

Engineering Applications of Computational Methods

引用

Engineering Applications of Computational Methods 2020年 3卷 1-31页

作者： Wu, Min Cao, Weihua Chen, Xin She, Jinhua China University of Geosciences Wuhan China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China School of Engineering Tokyo University of Technology Tokyo Japan

The iron and steel industry is the base for the development of national economy. It directly influences the industries of construction, machinery, shipbuilding, automobile, household electrical appliances, etc. The complexity and large uncertainties of the processes in the iron and steel industry make it difficult to establish accurate mathematical models and to control the processes using conventional control methods. On the other hand, since intelligent control does not require an accurate mathematics model, and its control algorithm has self-learning and adaptive ability, this control method is playing an increasingly important role in the iron and steel industry. © 2020, Science Press.

关键词： Steelmaking

来源：评论

学校读者我要写书评

暂无评论

Design of Ultrasonic Ranging System Based on Cross-correlation Method

Design of Ultrasonic Ranging System Based on Cross-correlati...

引用

Chinese control Conference (CCC)

作者： Han Lu Zhihua Li Pei Gao School of Automation China University of Geosciences Wuhan P. R. China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan P. R. China

ISBN: (数字)9789881563903

ISBN: (纸本)9781728165233

In order to solve the problem that ultrasonic ranging is difficult to obtain the first wave, an ultrasonic ranging system based on cross-correlation method is designed. In this system, the signal generating unit is mainly responsible for transmitting high frequency sound waves, and the data acquisition unit is mainly responsible for collecting and storing the sound waves. Then, according to the time delay between the collected acoustic signals, the time difference between the signals received by the signal acquisition unit is obtained, so as to measure the distance.

关键词： Acoustics Correlation Ultrasonic variables measurement Delays Power supplies Distance measurement

来源：评论

学校读者我要写书评

暂无评论

A Privilege Management Method of Centralized Management System in the Computer Room

A Privilege Management Method of Centralized Management Syst...

引用

Chinese automation Congress (CAC)

作者： XiaoYu Dou Yan Yuan Weihua Cao Peilun Ouyang School of Automation China University of Geosciences Wuhan P. R. China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan P. R. China

ISBN: (数字)9781728176871

ISBN: (纸本)9781728176888

The computer room management system is a management system for network monitoring, bottom control, information filtering and security monitoring of computer room. It has the characteristics of multi-user and multi module. Scientific and intelligent management and control is the premise of efficient and stable work in computer room. Aiming at the problems of power supply security and efficiency, user authority configuration and management security of traditional computer room, a centralized management system of computer room based on Role Based of Access control(RBAC) is designed and implemented. This paper first introduces the structure and function of the system, then focuses on the detailed design of the user management subsystem of the system, and finally gives the realization and actual operation of the system. At present, the system has been successfully applied to a power room equipment, which proves the security, stability and efficiency of the system.

关键词： Computer security Security Encryption Databases Real-time systems Personnel complexity theory

来源：评论

学校读者我要写书评

暂无评论

Graph Convolutional Extreme Learning Machine

Graph Convolutional Extreme Learning Machine

引用

International Joint Conference on Neural Networks (IJCNN)

作者： Zijia Zhang Yaoming Cai Wenyin Gong Xiaobo Liu Zhihua Cai School of Computer Science China University of Geosciences Wuhan China School of Automation China University of Geosciences Wuhan China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China

ISBN: (数字)9781728169262

ISBN: (纸本)9781728169279

Extreme Learning Machine (ELM) has gained lots of research interest due to its universal approximation capability and fast learning speed. However, traditional ELMs are devised for regular Euclidean data, such as 2D grid and 1D sequence, and thus don't apply to non-Euclidean data, e.g., graph-structured data. To overcome this shortcoming, this paper presents a Graph Convolutional Extreme Learning Machine (termed as GCELM) for semi-supervised classification. Technically, a random graph convolutional layer is introduced to replace the random projection of original ELM, which endues ELM with the capability of dealing with graph-structured data directly. To generate a robust graph from the raw dataset, a self-representation model is adopted to construct a weighted graph. Extensive experiments on 27 UCI datasets demonstrate that GCELM outperforms many popular semi-supervised methods, and with faster learning speed. To the best of our knowledge, this is the first work that combines graph convolution with ELM.

关键词： Convolution Robustness Closed-form solutions Neural networks Training Convolutional codes Optimization

来源：评论

学校读者我要写书评

暂无评论

A Comparison Study of Three Active Disturbance Rejection Methods

A Comparison Study of Three Active Disturbance Rejection Met...

引用

第三十九届中国控制会议

作者： Youwu Du Weihua Cao Jinhua She Mingxing Fang School of Automation China University of Geosciences College of Physics and Electronic Information Anhui Normal University Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems School of Engineering Tokyo University of Technology

This paper investigates the performance of three active disturbance-rejection methods: disturbance-observer-based（DOB） control, active disturbance rejection control（ADRC）, and equivalent-input-disturbance-based（EID） control. Compared to the classic feedback control, these methods provide an additional degree of freedom to reject disturbances effectively. First, the disturbance-rejection mechanism of each of the methods is analyzed. for a proper design, the transfer function from disturbances to the output of a system approximates zero using these methods. This implies the effect of disturbances is blocked to the ***, the three methods are applied to the position control of a ball-and-beam system for comparison. The simulation results show that all these methods are insensitive to disturbances and robust to system uncertainties. And the error of the system output is smaller for the EID method than for the DOB and ADRC methods.

关键词： Active disturbance rejection control（ADRC） disturbance observer（DOB） disturbance estimation equivalent input disturbance（EID） robust control

来源：评论

学校读者我要写书评

暂无评论

Fluidspread: A New Method of Maximizing Positive Influence in Online Social Networks via Fluid Dynamics

Fluidspread: A New Method of Maximizing Positive Influence i...

引用

International Conference on control and automation (ICCA)

作者： Feng Wang Jinhua She Yasuhiro Ohyama Min Wu School of Automation China University of Geosciences Wuhan China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan China School of Engineering Tokyo University of Technology Hachioji Tokyo Japan

ISBN: (数字)9781728190938

ISBN: (纸本)9781728190945

Influence maximization aims at detecting the top-k influential users in online social networks. Almost all previous models of influence spread cannot simultaneously incorporate users' attitudes, interactions between users, and dynamic influences. However, in this study, we established a new model of influence spread via fluid dynamics, which reveals the time-evolving process for influence spread. We modeled the spread of influence as the process of fluid update based on three dimensions: the difference of fluid height, the temperature of fluids, and the difference of temperature. Moreover, we formulated the problem of maximizing positive influence and devised a Fluid-spread greedy algorithm to solve it. We conducted extensive comparisons between our approach and several baselines, and experimental results illustrate the effectiveness and efficiency of the Fluidspread model and algorithm.

关键词： Containers Dynamical systems Valves Plugs Time complexity Temperature distribution Social networking (online)

来源：评论

学校读者我要写书评

暂无评论

Position control of a Planar Single-Link Flexible-Link Manipulator Based on Enhanced Dynamic Coupling Model ⁎

引用

IFAC-PapersOnLine 2020年第2期53卷 7777-7782页

作者： Qingxin Meng Jundong Wu Ze Yan Chun-Yi Su School of Automation China University of Geosciences Wuhan Hubei 430074 China Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems Wuhan Hubei 430074 China Department of Mechanical Industrial and Aerospace Engineering Concordia University Montreal QC H3G 1M8 Canada

Position control of a planar single-link flexible-link manipulator always faces huge challenges due to the underactuated characteristic of the system and the vibration of the flexible link. Since the system state variables related to the vibration is underactuated, this paper considers enhancing the dynamic coupling of this system. An enhanced dynamic coupling model is established by making equivalent transformation for the real dynamic model of the system. This enhanced dynamic coupling model makes the vibration variables appear as active variables in the proposed energy-based controller. Therefore, the proposed controller achieves good vibration suppression effect. The stability analysis is presented to prove that the proposed controller can effectively achieve the position control objective, and the simulation results further demonstrate the superiority of the proposed control method.

关键词： Flexible-link manipulator underactuated system enhanced dynamic coupling position control vibration control

来源：评论

学校读者我要写书评

暂无评论

Stability and Neimark-Sacker Bifurcation of Leslie-Gower Predator-Prey System with Two Delays

Stability and Neimark-Sacker Bifurcation of Leslie-Gower Pre...

引用

第三十九届中国控制会议

作者： Wei Yin Weiqi Qin Xiaowei Jiang Xiangyong Chen Ming Chi School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation of Complex Systems Affiliated Hospital of Shandong Medical College School of Automation and Electrical Engineering Linyi University Huazhong University of Science and Technology

Neimark-Sacker bifurcation of a delay differential equation modeling two-enterprise interaction mechanism is investigated. for the demands of computer simulation applications, the discrete-time two-enterprise interaction model is proposed by using the forward Euler scheme. By discussing the characteristic equation of linearized part, the local stability criterion of the positive fixed point is presented. Time lag is selected as the bifurcation parameter. Then it is demonstrated that variation of time lag may result in Neimark-Sacker bifurcation. Furthermore, derivations for the directions and stability of Neimark-Sacker bifurcation are also given. Finally, we simulate the main results.

关键词： Leslie-Gower model Delay Stability Neimark-Sacker bifurcation

来源：评论

学校读者我要写书评

暂无评论

Multiscale Infrared and Visible Image Fusion Based on Phase Congruency and Saliency

Multiscale Infrared and Visible Image Fusion Based on Phase ...

引用

IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： Jun Chen Kangle Wu Linbo Luo Xiaoqiang Chen Yue Gu Xin Tian School of Automation China University of Geosciences Hubei Key Laboratory of Advanced Control and Intelligent Automation for Complex Systems School of Mechanical Engineering and Electronic Information China University of Geosciences Electronic Information School Wuhan University

ISBN: (数字)9781728163741

ISBN: (纸本)9781728163758

In this paper, in order to enhance the infrared target in infrared image and retain the edge and detail information in visible image, we propose a multi-scale decomposition fusion method based on phase congruency and saliency. In this method, the Laplacian pyramid is first used to decompose the source image into detail layers and base layers. Secondly, we use a method based on phase congruency for the fusion of detail layers. Thirdly, for the base layer, we decompose it into saliency map and residual map. The “max absolute” rule and “averag” rule are adopted for the fusion of saliency map and residual map, then the fused saliency map and residual map are added to attain the fused base image. Finally, we use the inverse transform of Laplacian pyramid to reconstruct the fused image. The experimental results show that the proposed method have better fusion effect than other methods. What's outstanding is that the infrared targets in the fused image are enhanced and abundant edges are preserved.

关键词： Image fusion Image edge detection Laplace equations Image reconstruction Discrete wavelet transforms Target recognition Fuses

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：