检索结果-内蒙古大学图书馆

International Workshop on Intelligent Systems and Applications, ISA

作者： Jirong Gu Lin Lin Hui Wang College of Geography and Resources Sciences Sichuan Normal University China Department of Computer Science Yili Normal School Yining China State Key Laboratory of Software Engineering Wuhan University of China China

Particle swarm optimization (PSO) has shown its good performance on numerical function problems. However, on some multimodal functions the PSO easily suffers from premature convergence because of the rapid decline in velocity. In this paper, a hybrid PSO algorithm, called HPSO, is proposed, which employs a modified velocity model to guarantee a non-zero velocity. In addition, a Cauchy mutation operator conducted on the global best particle is used for improving the global search ability of PSO. Experimental studies on a suite of multimodal functions with many local minima show that the HPSO outperforms the standard PSO, CEP, Gaussian swarm with Gaussian mutation (GPSO+GJ) and Gaussian swarm with Cauchy mutation (GPSO+CJ) on most test functions.

关键词： Particle swarm optimization Genetic mutations Evolutionary computation Equations software algorithms Educational institutions Geography computer science software engineering Convergence

来源：评论

学校读者我要写书评

暂无评论

Multi-attributes controlled point-based rendering architecture for mobile devices

Multi-attributes controlled point-based rendering architectu...

引用

11th IEEE International Conference on computer-Aided Design and computer Graphics(第11届IEEE国际计算机辅助设计与图形学学术会议 IEEE CAD/GRAPHICS 2009)

作者： Zhiying He Xiaohui Liang State Key Lab. of Virtual Reality Technology and Systems School of Computer Science and Engineering Beihang UniversityBeijing 100191 P.R. China

Taking the characteristics of mobile devices and the demands for graphics rendering into account, this paper gives a set of definitions of attributes to express the performance of mobile terminals and algorithm performance. And then, according to the relationship of these attributes, a point-based rendering architecture for mobile devices is proposed. It includes pre-processing simplification, data organization and rendering. Instead of just simplifying the algorithm on PC, the entire process takes the multi-attributes of mobile devices and algorithm into account. Experiments shows that it can make full use of the limited resources to carry out a relatively realistic and real-time rendering.

关键词： Rendering (computer graphics) Mobile computing Testing Graphics Cranes Control systems computer architecture Helium Virtual reality computer science

来源：评论

学校读者我要写书评

暂无评论

Prediction of interspecies transmission for avian influenza a virus based on BP neural network

Prediction of interspecies transmission for avian influenza ...

引用

International Conference on Bio-Inspired Computing: Theories and Applications, BICTA

作者： Xiaoli Qiang Zheng Kou School of Electronic Engineering and Computer Science Key Laboratory of High Confidence Software Technologies of Ministry of Education Peking University Beijing China State Key Laboratory of Virology Wuhan Institute of Virology Chinese Academy and Sciences Wuhan China

The prediction of the transmissibility of avian influenza A viruses from birds to humans is very important for the public health. Recently, two categories of molecular patterns, which were associated with the phenotype of interspecies transmission, were found to exist among avian influenza A viruses with different subtypes. In the paper, we used the similar method based on wavelet packet decomposition to transform the viral sequences and used the energy features of viral genome as input to train BP neural network. The good results of experimentation were got to discriminate the two categories of molecular patterns. A novel method was constructed to predict the transmissibility of avian influenza A viruses.

关键词： Influenza Neural networks Viruses (medical) Birds Humans Public healthcare Wavelet packets Wavelet transforms Genomics Bioinformatics

来源：评论

学校读者我要写书评

暂无评论

Solving Global Unconstrained Optimization Problems by Symmetry-Breaking

Solving Global Unconstrained Optimization Problems by Symmet...

引用

International Conference on computer and Information Science (ACIS)

作者： Xiaohui Ji Feifei Ma Jian Zhang School of Information Engineering China University of Geoscience Beijing China State Key Laboratory of Computer Science Institute of Software Chinese Academy and Sciences Beijing China Chinese Academy of Sciences Beijing Beijing CN

Global optimization has many real-world applications. Most methods for solving it are based on search,so decreasing its search space can increase the efficiency for their solving. Symmetry-breaking is an important technique for decreasing search space and it has been widely used in SAT,CSP and so on. In this paper, we try to decrease the search space of an unconstrained optimization problem by symmetry *** present a method for extracting symmetries of an unconstrained optimization problem, and a method for constructing constraints to break those symmetries. The experimental results show that our methods are effective and efficient and symmetry-breaking can indeed increase the efficiency of global optimization problems solving.

关键词： Optimization methods Information science Geology laboratories computer science Application software Constraint optimization Problem-solving Search methods Aircraft

来源：评论

学校读者我要写书评

暂无评论

A Model-Based Fuzz Framework to the Security Testing of TCG software Stack Implementations

A Model-Based Fuzz Framework to the Security Testing of TCG ...

引用

International Conference on Multimedia Information Networking and Security (MINES)

作者： Yang Yang Huanguo Zhang Mi Pan Jian Yang Fan He Zhide Li School of Computer Wuhan University of China Wuhan China School of Computer State Key Laboratory of Software Engineering Wuhan University of China Wuhan China Key Laboratory of Aerospace Information Security and Trust Computing Ministry of Education Wuhan China Guangdong Dongguan Supervision Testing Institute of Quality and Metrology Dongguan China

Fuzz testing is an effective technique for finding security vulnerabilities in software. Traditionally fuzz testing tools use random inputs and watch the resulting values. In this paper, we present a model-based fuzz framework for systematic automated testing of a TCG trusted software stack implementation. This framework is based on blackbox fuzz testing methods, integrated with target profiling, data modeling and test algorithm etc. With the generation of smart, semantic-aware test cases, a more complete and deep testing can be provided. We also demonstrate the use of our model-based fuzz framework which can identity several vulnerabilities in some form of TSS implementation.

关键词： software testing Information security Aerospace testing Cryptography Libraries Simple object access protocol computer security computer networks Automatic testing software quality

来源：评论

学校读者我要写书评

暂无评论

A RFID Anti-Collision Algorithm Based on Pipeline and Pre-Detecting Mechanism

A RFID Anti-Collision Algorithm Based on Pipeline and Pre-De...

引用

IEEE International Symposium on computer Network and Multimedia Technology, CNMT

作者： Wenbin Hu Zhengbing Hu Ya Liu Wen Su Mao Ding Ziyao Pan Computer School Wuhan University Wuhan China State Key Lab. For Novel Software Technology Nanjing University P. R. China Department of Information Technology Huazhong Normal University China

This paper is going to present a new algorithm called "PP" (a RFID anti-collision algorithm based on pipeline and pre-detecting mechanism) to solve the problem of collisions among the tags in RFID system. This algorithm provides a hardware architecture consisting of two antennas: a pre-detection antenna for pre-detecting and a reading antenna for tag reading, the two processes of which will work respectively and concurrently based on pipeline system. Compared with other related researches, this algorithm that avoids the waste of time in the process of pre-detecting and free from the limitation-the ratio of the length of detection slot to reading slot-will contribute to a non-stop reading operation. Our simulation illuminates that the proposed PP algorithm outperforms the existing ones in efficiency, stability and the leakage rate of tags.

关键词： Radiofrequency identification Pipelines Hardware software algorithms Stability Binary trees Protocols Paper technology Information technology RFID tags

来源：评论

学校读者我要写书评

暂无评论

Multi-objective Optimization about Functions of the East Lake in Wuhan

Multi-objective Optimization about Functions of the East Lak...

引用

第十三届世界湖泊大会

作者：李新民李蓉 Editorial Office of Central China Normal University Hankou Branch Department of Computer Science Central China Normal University Department of Geography Central China Normal University State Key Lab of Software Engineering Wuhan University

After multiple-objective optimized decision about the East Lake in Wuhan,combining of expert system 's identification and adjustment,we get weights of F（tourism function）,F（flood storage function）,F（water supply function）,F（aquaculture function）,F（water sports function）,F（vocation land and sanitaria function） and F（lake shore garden function）,each of which is:0.5,0.1,0.05,0.05,0.05,0.05,0.2.F,will become more and more outstanding and become the most important function in comprehensive utilization of the East *** the improvement of urban basic facilities,ability of pumping stations will be improved,and F could be maintained.F will be developed in adjustment.

关键词：

来源：评论

学校读者我要写书评

暂无评论

DFTT4CWS: A Testing Tool for Composite Web Services Based on Data-Flow

DFTT4CWS: A Testing Tool for Composite Web Services Based on...

引用

Web Information Systems and Applications Conference (WISA)

作者： Jun Hou Lei Xu School of Computer Science and Engineering South-East University Nanjing China China Telecom Jiangsu Hongxin System Integration Company Limited Nanjing China State Key Laboratory for Novel Software Technology Department of Computer Science and Technology Nanjing University Nanjing China

For large and complex composite Web services which are composed by BPEL and a set of WSDL and XSD documents, we urgently need the aid of the tools in designing and selecting test cases. However, most of mature testing tools which generate test data with the information of WSDL are used for single service while the research for composition remains in the realm of theory. So we apply the theory of data-flow testing and try to develop a testing tool for Web services composition which can automatically detects harmful data-flow anomalies and generate test paths according to all kinds of data flow coverage criteria.

关键词： Web services Automatic testing Application software System testing computer science Sequential analysis Information systems Data engineering Design engineering Telecommunications

来源：评论

学校读者我要写书评

暂无评论

Facilitating effective resource publishing and searching in DHT networks

引用

HKIE Transactions Hong Kong Institution of Engineers 2009年第3期16卷 32-41页

作者： Xu, Quanqing Hou, Xiaoxiao Cui, Bin Shen, Heng Tao Dai, Yafei State Key Lab for Adv Opt Commun Syst and Networks Peking University China Department of Computer Science and Technology Stony Brook University United States School of Information Technology and Electrical Engineering University of Queensland Australia

As a structured overlay network, DHT (Distributed Hash Table) has been widely used in P2P systems. Existing resource publishing algorithms, including One-step publishing in eMule, do not completely exploit features of DHTs and incur heavy network load. In this paper, we propose a novel resource publishing algorithm: Step-by-step publishing, in DHT networks. It is more effective and scalable with lower network load than the existing publishing algorithms. We also utilise the techniques of vector space model and user relevance feedback to optimise the Step-by- step publishing algorithm, which effectively improves search hit ratio and reduces network load. After analysing the dynamics of P2P systems, we present index maintenance schemes under highly dynamic P2P networks. Based on real datasetsfrom Maze system, simulation experiment results show that this proposed approach has low network overhead and publishing cost, high search and download hit ratio.

关键词： Peer to peer networks

来源：评论

学校读者我要写书评

暂无评论

Combining opportunistic routing with dynamic source routing for wireless mesh networks

Combining opportunistic routing with dynamic source routing ...

引用

IET International Communication Conference on Wireless Mobile and Computing (CCWMC 2009)

作者： Qiang Shen Xuming Fang Sunmyeng Kim Rong He High Performance Network Lab Institute of Acoustics Chinese Academy and Sciences Beijing China Provincial Key Laboratory of Information Coding and Transmission Southwest Jiaotong University Chengdu China School of Computer and Software Engineering Kumoh National Institute of Technology Gyeongbuk South Korea

Routing in wireless mesh networks presents a great challenge due to unreliable wireless links and collisions. Recently, a new routing method, opportunistic routing (OR), is proposed to deal with them by exploiting broadcast nature of wireless networks. OR relies on the global knowledge of networks to select relays and determine priorities. In this paper, we propose a new routing scheme, OxDSR, which combines OR and dynamic source routing (DSR) and performs opportunistic transmissions with the help of the local information and the traditional route obtained by DSR. By taking the duplicates and additional wireless resource consumed by multiple ACK frames into consideration, we propose a new metric, equivalent data rate, to select and prioritize relays. Extensive simulation study shows that the proposed OxDSR is more resilient and achieves higher throughput than DSR based on the expected transmission count routing metric.

关键词：

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：