检索结果-内蒙古大学图书馆

International Conference on Pattern Recognition

作者： Shuang Liu Chunheng Wang Baihua Xiao Zhong Zhang Yunxue Shao State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

ISBN: (纸本)9781467322164

Traditional sparse coding has been successfully applied in texture and image classification in the past years. Yet such kind of method neglects the influence of the signs of coding coefficients, which may cause information loss in the sequential max pooling. In this paper, we propose a novel coding strategy for ground-based cloud classification, which is named soft-signed sparse coding. In our method, a constraint on the signs is explicitly added to the objective function of traditional sparse coding model, which can effectively regulate the ratio between the number of positive and negative non-zero coefficients. As a result, the proposed method can not only obtain low reconstruction error but also consider the influence of the signs of coding coefficients. The strategy is verified on two challenging cloud datasets, and the experimental results demonstrate the superior performance of our method compared with previous ones.

关键词： Encoding Image coding Clouds Dictionaries Vectors Image reconstruction Linear programming

来源：评论

学校读者我要写书评

暂无评论

Parallel Bus Rapid Transit (BRT) operation management system based on ACP approach

Parallel Bus Rapid Transit (BRT) operation management system...

引用

IEEE International Conference on Networking, Sensing and control

作者： Gang Xiong Xisong Dong Dong Fan Fenghua Zhu State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

Bus Rapid Transit (BRT) is an effective way to increase urban traffic capacity. But its operation and scheduling optimization are difficult. In this article, Parallel BRT Operation management System (PBOMS) is constructed based on ACP approach. It can detect the passenger's quantity on station platforms in real-time, traffic flow besides stations or at intersections, and the queuing length of vehicles on the road lines. It can provide short-term passenger and traffic saturation prediction in order to arrange transportation management more accurately to relieve the congestion. It can assess, improve and optimize the emergency management during holidays, public events, accidents and other emergency situations. It can improve the quality of real-time scheduling functions by using the measurement results detected from traffic videos, and so on. This system has been piloted in Guangzhou Zhongshan Avenue BRT, which was applied for BRT's monitoring, warning, forecasting, emergency management, real-time scheduling and other purposes, to improve Guangzhou BRT's smoothness, safety, efficiency and reliability.

关键词： Vehicles Data models Real time systems Monitoring Scheduling Roads

来源：评论

学校读者我要写书评

暂无评论

A target-reaching controller for mobile robots using spiking neural networks

A target-reaching controller for mobile robots using spiking...

引用

19th International Conference on Neural Information Processing, ICONIP 2012

作者： Wang, Xiuqing Hou, Zeng-Guang Lv, Feng Tan, Min Wang, Yongji Vocational and Technical Institute Hebei Normal University Shijiazhuang Hebei 050031 China State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing 100090 China State Key Laboratory of Computer Science Institute of Software Chinese Academy of Sciences Beijing 100190 China

ISBN: (纸本)9783642344770

Autonomous navigation plays important role in mobile robots. In this paper, a navigation controller based on spiking neural networks (SNNs) for mobile robots is presented. The proposed target-reaching navigation controller, in which the reactive architecture is used, is composed of three sub-controllers: the obstacle-avoidance controller and the wall-following controller using spiking neural networks (SNNs), and the goal-reaching controller. The experimental results show that the navigation controller can control the mobile robot to reach the target successfully while avoiding the obstacle and following the wall to get rid of the deadlock caused by local minimum. The proposed navigation controller does not require accurate mathematical models of the environment, and is suitable to unknown and unstructured environment. © 2012 Springer-Verlag.

关键词： Mobile robots

来源：评论

学校读者我要写书评

暂无评论

Heuristic dynamic programming-based H∞ control of discrete-time affine nonlinear systems

Heuristic dynamic programming-based H∞ control of discrete-...

引用

International Conference on Intelligent control and Information Processing (ICICIP)

作者： Hongliang Li Derong Liu Ding Wang State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

In this paper, we solve the H ∞ control problems for discrete-time affine nonlinear systems with known dynamics. An iterative heuristic dynamic programming algorithm is derived and the convergence analysis is provided. Three neural networks are used to approximate the control policy, the disturbance policy, and the value function, respectively. A simulation example is presented to demonstrate the effectiveness of the proposed scheme.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Contextual Fisher kernels for human action recognition

Contextual Fisher kernels for human action recognition

引用

International Conference on Pattern Recognition

作者： Zhong Zhang Chunheng Wang Baihua Xiao Wen Zhou Shuang Liu State Key Laboratory of Management and Control for Complex Systems Institute of Automation Chinese Academy of Sciences Beijing China

In the literature of human action recognition, despite promising results have been obtained by the traditional bag-of-words model, the relationship among spatiotemporal points has rarely been considered. Furthermore, serious quantization error also exists in this kind of strategy. In this paper, we propose a novel coding strategy named contextual Fisher kernels to overcome these limitations. We add a Gaussian function to represent contextual information into the generative model. In this way, our method explicitly considers the spatio-temporal contextual relationships between interest points and alleviates quantization error. Our method is verified on two challenging datasets (KTH and UCF sports), and the experimental results demonstrate that our method achieves better results than the state-of-the-art methods in human action recognition.

关键词： Kernel Humans Context modeling Quantization Vectors Accuracy Covariance matrix

来源：评论

学校读者我要写书评

暂无评论

A NoSQL based cached storage solution of GIS Web service

International Journal of Digital Content Technology and its ...

引用

International Journal of Digital Content Technology and its Applications 2012年第20期6卷 268-276页

作者： Liu, Jin Wu, Yangping Zhuo, Dan Hu, Qiping Wang, Yan Zhang, Wensheng State Key Lab of Software Engineering Computer School Wuhan University China International School of Software Wuhan University China State Key Lab of Management and Control for Complex Systems Institute of Automation Chinese Academy of Science China

One of challenges in GIS Web service is mass GIS data storage and processing. There are at least three obstacles that oppose dealing with this challenge: the mismatch between the frequent requirement of concurrent tasks for accessing data in GIS Web service and the poor performance of conventional storage mechanism such as relational databases;the insufficiency of relational databases to manage complex data types in GIS Web service;the horizontal scalability of storage for non-stop GIS Web service evolution. This paper proposes a distributed cached storage solution, as the mixture of MongoDB storage and Memcached cache, for GIS Web service. Both techniques are closely related to NoSQL that is a class of database management system identified by its non-adherence to the widely used relational database management system (RDBMS) model. A concise case that facilitates a better understanding of this work indicates its feasibility.

关键词： Websites

来源：评论

学校读者我要写书评

暂无评论

Design and Development of Material management System for Power Enterprise Group

Design and Development of Material Management System for Pow...

引用

IEEE International Conference on Automation and Logistics (ICAL)

作者： Xiong, Gang Hou, Jiachen Fan, Dong Dong, Xisong Yao, Yanjie Shang, Xiuqin Chinese Acad Sci Cloud Comp Ctr Dongguan Res Inst CASIA Dongguan 523808 Peoples R China Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing 100190 Peoples R China

ISBN: (纸本)9781467303644

With the fast development of the market economy in China, the material management of the Power Enterprise Group has changed and met many challenges. On the other hand, with the fast increase of Internet and data scale, some problems of enterprise material management can be solved by using IT technologies, such as database. For examples, it can help enterprises to develop the suitable management systems, so as to improve the management level and the enterprise's competitiveness. In the paper, compared with the traditional material flow management, a new flow model management was proposed for the complex management system of Power Enterprise Group, and material management system are designed and developed to realize the unified management on three tiers, i.e. Headquarter, Distribution management centers and Local power plants.

关键词： Material management system Procedure management Procedure modeling Power enterprise group

来源：评论

学校读者我要写书评

暂无评论

A Weight Regularized Relaxation Based Graph Matching Algorithm

A Weight Regularized Relaxation Based Graph Matching Algorit...

引用

2nd Sino-Foreign-Interchange Workshop on Intelligence Science and Intelligent Data Engineering (IScIDE)

作者： Liu, Zhi-Yong Qiao, Hong Xu, Lei Chinese Acad Sci Inst Automat State Key Lab Management & Control Complex Syst Beijing 100190 Peoples R China Chinese Univ Hong Kong Dept Comp Sci & Engn Sha Tin Hong Kong Peoples R China

ISBN: (纸本)9783642319181;9783642319198

In this paper we propose a regularized relaxation based graph matching algorithm. The graph matching problem is formulated as a constrained convex quadratic program, by relaxing the permutation matrix to a doubly stochastic one. To gradually push the doubly stochastic matrix back to a permutation one, a simple weighted concave regular term is added to the convex objective function. The concave regular function is not a concave relaxation of the original matching problem. However, it is shown that such a simple concave regular term has a comparative performance as the concave relaxation of the PATH following algorithm, which works only on undirected graphs. A concave-convex procedure (CCCP) together with the Frank-Wolfe algorithm is adopted to solve the matching problem, and some experimental results witness the state-of-art performance of the proposed algorithm.

关键词： graph matching CCCP Frank-Wolfe algorithm convex relaxation

来源：评论

学校读者我要写书评

暂无评论

Design of distributed H_∞ fuzzy controllers with constraint for nonlinear hyperbolic PDE systems

引用

AUTOMATICA 2012年第10期48卷 2535-2543页

作者： Wu, Huai-Ning Wang, Jun-Wei Li, Han-Xiong Beijing Univ Aeronaut & Astronaut Beihang Univ Sch Automat Sci & Elect Engn Sci & Technol Aircraft Control Lab Beijing 100191 Peoples R China City Univ Hong Kong Dept Syst Engn & Engn Management Kowloon Hong Kong Peoples R China Cent S Univ State Key Lab High Performance Complex Mfg Changsha Hunan Peoples R China

This paper investigates the problem of designing a distributed H-infinity fuzzy controller with constraint for a class of nonlinear spatially distributed processes modeled by first-order hyperbolic partial differential equations (PDEs). The purpose of this paper is to design a distributed fuzzy state feedback controller such that the closed-loop PDE system is exponentially stable with a prescribed H-infinity performance of disturbance attenuation, while the control constraint is respected. Initially, a Takagi-Sugeno (T-S) hyperbolic PDE model is proposed to accurately represent the nonlinear PDE system. Then, based on the T-S fuzzy PDE model, a distributed H-infinity fuzzy controller design with constraint is developed in terms of a set of coupled differential/algebraic linear matrix inequalities (D/ALMIs) in space. Furthermore, a suboptimal distributed H-infinity fuzzy controller with constraint is proposed to minimize the level of attenuation. The finite difference method in space and the existing linear matrix inequality (LMI) optimization techniques are employed to approximately solve the suboptimal fuzzy control design problem. Finally, the proposed design method is applied to the distributed control of a nonlinear system described by two coupled first-order hyperbolic PDEs to illustrate its effectiveness. (C) 2012 Elsevier Ltd. All rights reserved.

关键词： H-infinity control Takagi-Sugeno (T-S) models Spatially distributed processes control constraint Exponential stability Linear matrix inequalities (LMIs)

来源：评论

学校读者我要写书评

暂无评论

On a Bio-inspired Amphibious Robot Capable of Multimodal Motion

引用

IEEE-ASME TRANSACTIONS ON MECHATRONICS 2012年第5期17卷 847-856页

作者： Yu, Junzhi Ding, Rui Yang, Qinghai Tan, Min Wang, Weibing Zhang, Jianwei Chinese Acad Sci State Key Lab Management & Control Complex Syst Inst Automat Beijing 100190 Peoples R China Petrochina Res Inst Petr Explorat & Dev Beijing 100083 Peoples R China Shihezi Univ Machine & Elect Engn Coll Shihezi 832003 Peoples R China Univ Hamburg Dept Informat D-22527 Hamburg Germany

This paper addresses the system design and locomotion control for a versatile amphibious robot, AmphiRobot-II, inspired by various amphibian principles in the animal kingdom. In terms of the propulsion features of existing amphibians, a novel hybrid propulsive mechanism coupled with wheel-propeller-fin movements is proposed that integrates fish- or dolphin-like swimming and wheel-based crawling. The robot is able not only to implement flexible wheel-based movements on land, but also to perform steady and efficient fish-or dolphin-like swimming under water and can further switch between these two patterns via a specialized swivel device. To achieve multimodal motions, a body deformation steering approach is proposed for the turning locomotion on land with minimum turning radius obtained accordingly. A central pattern generator inspired underwater locomotion control is also implemented and tested on the physical robot. Based on the aforementioned design, the AmphiRobot-II prototype has been built and has successfully demonstrated to confirm the effectiveness of the hybrid propulsive scheme and the amphibious control approaches.

关键词： Amphibious robot bio-inspired robot mechanical design motion control multimodal motion

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：