检索结果-内蒙古大学图书馆

International Journal of Database Theory and Application 2014年第3期7卷 91-106页

作者： Wan, Jian Xuan, Huijia Zhang, Jilin School of Computer Science and Technology Hangzhou Dianzi University Hangzhou China Key Laboratory of Complex System Modeling and Simulation Ministry of Education Hangzhou China Electric Engineering School Zhejiang University Hangzhou China

With the advent of the information age, the data volumes of various industries are in explosive growth, which increasingly highlights the importance of data. When a disaster occurs, how to recover the data completely and rapidly is one of the important issues receiving common concerns throughout the current industrial and academic circles. Based on the traditional disaster recovery system, this paper researches and implements a PRS algorithm-based distributed disaster recovery system[1, 2] called OsnDDR, which ensures the high availability of the system under the circumstance of continuous disasters or multi-node damage. The system adopts PRS algorithm based on RS erasure code [3] to reduce the storage resource consumption caused by the data redundancy and designs the load balancing strategy to guarantee the load balancing of each disaster recovery center in the system. © 2014 SERSC.

关键词： Disasters

来源：评论

学校读者我要写书评

暂无评论

Improved optimization for data disaster recovery system over low-bandwidth networks

International Journal of Database Theory and Application

引用

International Journal of Database Theory and Application 2014年第5期7卷 1-16页

作者： Wan, Jian Hong, Xiaolong Zhang, Jinlin School of Computer Science and Technology Hangzhou Dianzi University Hangzhou China Key Laboratory of Complex System Modeling and Simulation Ministry of Education Hangzhou China Electric Engineering School Zhejiang University Hangzhou China

Data generated by various fields are increasing exponentially and thus results in challenges for data performances in both scales of diversity and complexity. The problem how to solve the bottlenecks of low-bandwidth networks has been of fatal significance for all kinds of network status. We present a new approach on improved optimization for data disaster recovery system (DDRS) over low-bandwidth networks that not only aims to improve the defects and deficiencies of mainstream DDRS but also helps ensure the reliable network resources for operators to conduct multi-services. A novel bandwidth self-adaptive approach (BSAA) for data packing replication was essentially established to make contribution to the integral performance improvement. A Hidden Markov Model (HMM) for predicting network status was also built to ensure system availability and stability. Experiments showed that the DDRS over low-bandwidth networks named InfoDr can effectively optimize the workload with better performance and better application self-adaptability for multi-services.

关键词： Hidden Markov models

来源：评论

学校读者我要写书评

暂无评论

Finite-time stability and stabilization of It stochastic time-varying systems

Finite-time stability and stabilization of It stochastic t...

引用

第三十三届中国控制会议

作者： YAN Zhiguo ZHANG Weihai LIN Zhongwei School of Electrical Engineering and Automation Qilu University of Technology College of Electrical Engineering and Automation Shandong University of Science and Technology State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources School of Control and Computer EngineeringNorth China Electric Power University

This paper deals with the finite-time stability and stabilization for continuous-time linear stochastic time-varying systems. Several necessary and sufficient conditions and a sufficient condition for finite-time stability are derived. Moreover,a sufficient condition for the existence of state feedback controller is given. Such results involve the feasibility problems of differential linear matrix inequalities with terminal constraint.

关键词： Stochastic systems,time-varying systems,finite-time stability

来源：评论

学校读者我要写书评

暂无评论

Real-coded genetic algorithm with oriented evolution towards promising region for parameter optimization

引用

computer Modelling and New Technologies 2014年第12期18卷 93-101页

作者： Chen, Zhiqiang Yun, Jiang Chen, Xudong School of Computer Science and Information Engineering 125 Chongqing Technology and Business University Chongqing China Chongqing Engineering Laboratory for Detection Control and Integrated System 19 Xuefu Avenue Nan'an Chongqing China

In this paper, a novel real-coded genetic algorithm is presented to generate offspring towards a promising polygon field with k+1 vertex, which represents a set of promising points in the entire population at a particular generation. A set of 19 test problems available in the global parameter optimization literature is used to test the performance of the proposed real-coded genetic algorithms. Several performance comparisons with five significant real-coded genetic algorithms, three state-of-the-art differential evolution algorithms and three others significant evolutionary computing techniques are performed. The comparative study shows the proposed approach is statistically significantly better than or at least comparable to twelve significant evolutionary computing techniques over a test suite of 19 benchmark functions.

关键词： Genetic algorithms

来源：评论

学校读者我要写书评

暂无评论

An emotion understanding system

An emotion understanding system

引用

International Conference on systems and Informatics (ICSAI)

作者： Rui Qiao Heng He Jinguang Gu Maofu Liu Yajun Feng Xiaolei Zhong Intelligent Information Processing and Real-time Industrial System Hubei Province Key Laboratory Wuhan China College of Computer Science and Technology Wuhan University of Science and Technology Wuhan China Air Force Early Warning Academy Wuhan China School of Software Huazhong University of Science Wuhan China

ISBN: (纸本)9781479954599

Emotions convey information. We present an emotion understanding system to excavate information from emotions. The system infers mental states, personalities and cooperativeness of agents, related actions, and related events from agents' emotions by the rule-like meta-knowledge about emotions. Our system can be used for agents to make decisions, process knowledge, and interact with users.

关键词： Appraisal Emotion recognition Standards Educational institutions Compounds Psychology computer architecture

来源：评论

学校读者我要写书评

暂无评论

MultiGreen: Cost-minimizing multi-source datacenter power supply with online control 13

MultiGreen: Cost-minimizing multi-source datacenter power su...

引用

4th ACM International Conference on Future Energy systems, e-Energy 2013

作者： Deng, Wei Liu, Fangming Jin, Hai Wu, Chuan Liu, Xue Services Computing Technology and System Lab. School of Computer Science and Technology Huazhong University of Science and Technology Wuhan China Department of Computer Science University of Hong Kong Hong Kong Hong Kong School of Computer Science McGill University Montreal QC Canada

ISBN: (纸本)9781450320528

Faced by soaring power cost, large footprint of carbon emission and unpredictable power outage, more and more modern Cloud Service Providers (CSPs) begin to mitigate these challenges by equipping their Datacenter Power Supply system (DPSS) with multiple sources: (1) smart grid with timevarying electricity prices, (2) uninterrupted power supply (UPS) of finite capacity, and (3) intermittent green or renewable energy. It remains a significant challenge how to operate among multiple power supply sources in a complementary manner, to deliver reliable energy to datacenter users over time, while minimizing a CSP's operational cost over the long run. This paper proposes an efficient, online control algorithm for DPSS, called MultiGreen. MultiGreen is based on an innovative two-timescale Lyapunov optimization technique. Without requiring a priori knowledge of system statistics, MultiGreen allows CSPs to make online decisions on purchasing grid energy at two time scales (in the long-term market and in the real-time market), leveraging renewable energy, and opportunistically charging and discharging UPS, in order to fully leverage the available green energy and low electricity prices at times for minimum operational cost. Our detailed analysis and trace-driven simulations based on one-month real-world data have demonstrated the optimality (in terms of the tradeoff between minimization of DPSS operational cost and satisfaction of datacenter availability) and stability (performance guarantee in cases of fluctuating energy demand and supply) of MultiGreen. © 2013 ACM.

关键词： Energy efficiency

来源：评论

学校读者我要写书评

暂无评论

Vibration model based multi-path traffic allocation algorithm for wireless mesh networks

引用

Journal of Information and Computational science 2013年第5期10卷 1253-1260页

作者： Yuan, Zhenxia Yu, Ruiguo Zhao, Mankun Du, Xiuping Lei, Ming Dong, Wenyong School of Computer Science and Technology Tianjin University Tianjin 300072 China School of International Education Tianjin University Tianjin 300072 China Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Tianjin University of Technology Tianjin 300191 China Key Laboratory of Computer Vision and System Ministry of Education Tianjin 300191 China Computer School Wuhan University Wuhan 430079 China

Mesh Networks (WMNs) is a promising network access technology. As WMNs' applications become more and more popular, the number of users grows quickly and the quality of service needs to be improved. When we try to analyze the load on different paths using the simplest multi-path routing algorithms we find that the load changes just like Simple Harmonic Motion, which inspires us to use physic model to analyze the traffic allocation problems. And then we design a new traffic allocation algorithm and the experiment shows that the algorithm can reduce the path delay variance. © 2013 Binary Information Press.

关键词： Quality of service

来源：评论

学校读者我要写书评

暂无评论

A secure self-destruction scheme with IBE for the internet content privacy

引用

Jisuanji Xuebao/Chinese Journal of computers 2014年第1期37卷 139-150页

作者： Xiong, Jin-Bo Yao, Zhi-Qiang Ma, Jian-Feng Li, Feng-Hua Liu, Xi-Meng Faculty of Software Fujian Normal University Fuzhou 350108 China School of Computer Science and Technology Xidian University Xi'an 710071 China State Key Laboratory of Information Security Institute of Information Engineering Chinese Academy of Sciences Beijing 100093 China Shaanxi Key Laboratory of Network and System Security Xidian University Xi'an 710071 China

With the rapid emerging of novelty Web services and cloud services, privacy information and documents of users become increasingly easy to be exposed in the Internet. To tackle the issue of lifecycle security of the privacy information and documents in the Internet, in this paper, we propose the idea of combining the three security methods of multilevel security, identity-based encryption (IBE), and distributed hash table (DHT) network. And we further propose an IBE-based secure self-destruction (ISS) scheme to protect the confidentiality and privacy of the Internet content by self-destruction after a predefined time. In our proposed ISS security scheme, the Internet content is first partitioned into many segments with diverse security levels, and each segment is encrypted with a symmetric key to obtain primitive ciphertext. By applying the methods of association and extraction, the primitive ciphertext is turned to associated ciphertext, which is then divided into extracted ciphertext and encapsulated ciphertext. The latter is encapsulated into the Internet content self-destructing object (CDO), which is stored into the storage services provider. Furthermore, to protect the privacy security when the CDO expired, the symmetric key is encrypted using the IBE algorithm based on the identity of the authorized user. The combination of this key's ciphertext and the extracted ciphertext, by means of Lagrange polynomial processing, generates mixture ciphertext shares. Then those shares are distributed into nodes within the DHT network and will be automatically discarded over the deadline when the primitive ciphertext and the symmtric key are unrecoverable. Consequently, the ISS scheme achieves the aim of secure self-destruction. Comprehensive analysis shows that the ISS scheme is able to satisfy all the design demands and is more secure than existing schemes. The ISS scheme can resist against not only the traditional cryptanalysis and brute-force attack, but also the Sybil

关键词： Access control

来源：评论

学校读者我要写书评

暂无评论

Data interpolating over RFID data streams for missed readings

Data interpolating over RFID data streams for missed reading...

引用

14th International Conference on Web-Age Information Management, WAIM 2013

作者： Xiao, Yingyuan Jiang, Tao Li, Yukun Xu, Guangquan Tianjin Key Laboratory of Intelligence Computing and Novel Software Technology Key Laboratory of Computer Vision and System Tianjin University of Technology 300384 China School of Computer Science and Technology Tianjin University 300072 Tianjin China

ISBN: (纸本)9783642395260

While tracing objects or analyzing human activities with RFID data sets, the quality of RFID data is a crucial aspect. The raw RFID data streams, however, tend to be noisy, including missed readings and unreliable readings. Traditional data cleaning tends to focus on a small set of well-defined tasks, including transformation, matching, and duplicate elimination. In this paper, we focus on exploring efficient methods for interpolating missed readings. We propose a novel probabilistic interpolating method and three novel deterministic interpolating methods based on time interval, containment relationship and inertia of objects, respectively. We conduct extensive experiments and the experimental results demonstrate the feasibility and effectiveness of our methods. © 2013 Springer-Verlag.

关键词： Radio frequency identification (RFID)

来源：评论

学校读者我要写书评

暂无评论

A metadata extraction approach from papers based on meta-learning

引用

Journal of Information and Computational science 2013年第4期10卷 1121-1129页

作者： Zhang, Fuzhi Zhao, Zihao School of Information Science and Engineering The Key Laboratory for Computer Virtual Technology and System Integration of Hebei Province Yanshan University Qinhuangdao 066004 China

To improve the accuracy of paper metadata extraction, a paper metadata extraction approach based on meta-learning is presented. Firstly, we propose a construction method of base-classifiers, which combines the Support Vector Machine (SVM) with the created diverse base-level training sets to construct some base-classifiers with larger diversity. The training sets are created according to the Open Access (OA) journal categories. Secondly, we present a paper metadata extraction algorithm based on meta-learning, which uses the meta-classifier to integrate the classification results of the base-classifiers and generates the final extraction results. The proposed approach guarantees extraction accuracy and independence of the base-classifiers, increases the diversities of them, and improves the classification performance of the meta-classifier, as well as reduces the degree of correlation of misclassifications. The experimental results show that our approach is superior to other single machine learning algorithm and the accuracy of paper metadata extraction is improved. © 2013 by Binary Information Press.

关键词： Support vector machines

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：