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2011 IEEE International Conference on Cloud Computing and Intelligence Systems(CCIS2011)

作者： Qifeng Li 1 2 3 Bing Li 1 2 1 state key laboratory of Software Engineering Wuhan university Wuhan china 2 School of Computer Wuhan university Wuhan china 3 Faculty of Mathematics and Computer Science Hubei university Wuhan china

The Open Source Software（OSS） management has attracted considerable attention in the last few *** management for effective software process improvement must be achieved based on quantitative ***,because data collection for measurement requires high costs and collaboration with developers,and data dumps may require a huge effort to understand schemas and *** is difficult to collect coherent,quantitative data continuously and to utilize the data for practicing software process *** this paper,we report our results of mining data acquired from ***,the largest open source software hosting *** the process we describe Mailing list Crawler（MC） which automatically collects Mailing lists repositories in widely used software development support *** integrated measurement results graphically,MC can help developers/managers keep projects under control in real time.

关键词： Open Source Software Mailing list Regular Expressions

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Control of Suspension and Steering Systems for Automotive Ride Comfort and Handling Stability Optimization

Control of Suspension and Steering Systems for Automotive Ri...

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2011 IEEE 2nd International Conference on Software Engineering and Service Science(ICSESS 2011)

作者： Cheng Yue Shi Wen-ku and Liu Wei state key laboratory of Automobile Dynamic Simulation Jilin university Changchun china Wu Bi-Lei china FAW Group Corporation R&D Center Changchun china

In this paper,the features of electrical power steering and semi-active suspension systems have been done a more indepth *** order to achieve the common objective of improving the ride comfort and handing stability of automobile,an integrated control strategy was proposed to achieve the control of electrical power steering and semi-active suspension *** a well on the basis of experimental data,the mathematical model of electrical power steering and semi-active suspension systems were adopted to predict the characteristics of these two *** order to achieve the simulation of the integrated control strategy,a PID controller for electrical power steering and an optimum controller for semi-active suspension systems were designed under MATLAB environment,and a vehicle system dynamics model including the electrical power steering and semi-active suspension systems was also *** automotive ride comfort and handing stability simulation,the integrated control strategy was proved to be effective.

关键词： integrated control electrical power steering semiactive suspension simulation

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对等网监控技术研究

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计算机工程与应用 2004年第33期40卷 144-147,214页

作者：张联峰刘乃安刘宝旭西安电子科技大学ISN国家重点实验室MCN室西安710071 中国科学院高能物理研究所计算中心北京100039

对等网(P2P)主要指计算机之间以对等方式形成的网络连接,弱化或完全取消了服务器的作用。P2P网络的安全性和可管理性较差,存在一定的安全隐患。文章首先简单介绍P2P网络和网络监控技术的基本概念;然后分析P2P网络特点,提出了P2P网络监... 详细信息

对等网(P2P)主要指计算机之间以对等方式形成的网络连接,弱化或完全取消了服务器的作用。P2P网络的安全性和可管理性较差,存在一定的安全隐患。文章首先简单介绍P2P网络和网络监控技术的基本概念;然后分析P2P网络特点,提出了P2P网络监控系统模型和监控策略;最后介绍了P2P网络及其监控技术的发展前景。

关键词：对等网监控技术模型策略

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维普期刊数据库

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Mechanism for Multi-XML Documents Correlating Validation and its Implementation

Mechanism for Multi-XML Documents Correlating Validation and...

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2009 IEEE International Conference on Intelligent Computing and Intelligent Systems(ICIS2009)

作者： Nan Li 1 2 Yazhe Tang 1 Chao Pei 1 and Xiaofei Wang 1 1 Xi’an Jiaotong university Department of Computer Science Xi’an P.R.china 2 beijing university of posts and telecommunications beijing P.R.china

When an application manages multiple XML documents,the references between them need to be validated before any further *** this paper,we present a general validating mechanism based on a model which describes references between two or more XML documents as directed graphs.A formal system is presented and we prove that the correlating validation of many-to-many XML documents could be simplified as several correlating validations of one-to-many XML *** the means of adding correlating validation logic into the Xerces2-java components architecture,we develop a parser *** show that the mechanism is a proper solution for multi-XML documents correlating validation.

关键词： correlating validation mechanism parser XML directed graph

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Examining OSGi from an Ideal Enterprise Software Component Model

Examining OSGi from an Ideal Enterprise Software Component M...

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IEEE beijing SECTION(跨国电气电子工程师学会北京分会)

作者： Jingang Zhou~(1,2),Dazhe Zhao~(1,2),Yong Ji~(2,3),Jiren Liu~1 1 National Engineering Research Center for Computer Software,Northeastern university,110004,Shenyang,china 2 state key laboratory of Advanced Software Architecture,Neusoft Corporation,110179,Shenyang,china 3 School of Management,Dalian university of technology,116023,Dalian,china

Component-based software development is becoming a discipline in software engineering community,but it still immature in enterprise application *** gives some insights for component-based development(CBD).By proposing an ideal component model for enterprise applications, we analyze the performance of OSGi against such a *** result shows that OSGi is still lack of some advanced component features for CBD,although it provides a modular solution superior to plain *** result also contributes both to the decision making for the software developers who want to select the OSGi component technology and to the improvements to be made to OSGi.

关键词： software component component model OSGi component-based development enterprise software

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DWT BASED HMM FOR FACE RECOGNITION

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Journal of Electronics(china) 2007年第6期24卷 835-837页

作者： Shen Linlin Ji Zhen Bai Li Xu Chen TI DSPs Lab Faculty of Information Engineering Shenzhen University Shenzhen 518050 China School of Computer Science ＆ Information technology University of Nottingham NG8 1BB UK Institute of Intelligent Computing Science Shenzhen University Shenzhen 518060 China

A novel Discrete Wavelet Transform (DWT) based Hidden Markov Module (HMM) for face recognition is presented in this letter. To improve the accuracy of HMM based face recognition algorithm, DWT is used to replace Discrete Cosine Transform (DCT) for observation sequence ex- traction. Extensive experiments are conducted on two public databases and the results show that the proposed method can improve the accuracy significantly, especially when the face database is large and only few training images are available.

关键词： Discrete Wavelet Transform (DWT) Hidden Markov Model (HMM) Face recognition

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维普期刊数据库

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Optimal Precoding Ratios for Precoded （3,6） LDPC Codes

Optimal Precoding Ratios for Precoded （3,6） LDPC Codes

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2011 IEEE International Conference on Information Theory and Information Security(ICITIS 2011)

作者： Huijuan Zheng Xi’an Institute of Post and telecommunications P. R. china.Sheng Tong state key Lab. of ISN Xidian Unviersity P. R. china

Recently, the technique of precoding is in- troduced to LDPC codes by Divsalar et al., resulting in precoded LDPC codes. It is shown that precoding can improve not only the iterative decoding thresholds of regular LDPC codes but also their maximum-likelihood （ML） decoding thresholds. In this paper, we apply pre- coding only to the information bits and consider the optimal precoding ratios for precoded （3,6） LDPC codes under both iterative and ML decodings. For iterative decoding performance analysis, the tool of EXIT charts is employed, which shows that the optimal precoding ratio is 0.25, i.e., half of the information bits are to be precoded;whereas, for ML decoding analysis, the asymp- totic ensemble distance spectrum of precoded （3,6） LDPC codes is first derived. Then, using the derived asymptotic ensemble distance spectrum along with Divsalar’s simple bound, we show that the optimal ML decoding threshold is achieved at a precoding ratio of 0.5, i.e., all information bits are to be precoded.

关键词： Low-density parity-check (LDPC) codes precoding weight distribution decoding thresholds.

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Bayesian Theory Based Channel Estimation Method for Fast Fading OFDM Systems

Bayesian Theory Based Channel Estimation Method for Fast Fad...

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2011 IEEE International Conference on Information Theory and Information Security(ICITIS 2011)

作者： Jingxiao Ding Keren Wang Xiaobo Chen Electronic Engineering Institute Hefei china

In orthogonal frequency-division multiplexing systems,channel state information is essential for coherent *** accuracy of channel estimation would be degraded by inter-carrier interference （ICI）.For time-varying channels,a new channel estimation method based on eigenvalue decomposition was proposed,and a new pilot pattern was also *** exploiting the time and frequency correlations of channel taps,the frequency-domain channel matrix can be decomposed by a sum of its eigenvector,and then the coefficients were estimated by using a Bayesian *** results demonstrate the effectiveness of the proposed channel estimation method in rapidly time-varying scenarios.

关键词： OFDM channel estimation time-varying channel eigenvalue decomposition (EVD)

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机器学习中的特征选择方法研究及展望

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北京邮电大学学报 2018年第1期41卷 1-12页

作者：崔鸿雁徐帅张利锋 Roy E.Welsch Berthold K.P.Horn 北京邮电大学网络与交换技术国家重点实验室北京100876 北京邮电大学网络体系构建与融合北京市重点实验室北京100876 先进信息网络北京实验室北京100876 Sloan School of Management Massachusetts Institute of Technology MA 02139 USA Csail laboratory Massachusetts Institute of Technology MA 02139 USA

任何领域的大数据研究都离不开用机器学习方法提取特征.为了探求满足海量大数据分析需求的特征选择方法,笔者对利用机器学习进行特征选择的常用方法做了深入分析,归纳总结出特征选择的五大类方法：相关性度量方法、Lasso稀疏选择方法、... 详细信息

任何领域的大数据研究都离不开用机器学习方法提取特征.为了探求满足海量大数据分析需求的特征选择方法,笔者对利用机器学习进行特征选择的常用方法做了深入分析,归纳总结出特征选择的五大类方法：相关性度量方法、Lasso稀疏选择方法、集成方法、神经网络方法、主成分分析方法.通过对比不同特征选择方法的原理、实现过程以及应用场景,给出了不同算法下进行特征选择时的适用范围、优缺点和关键点,为研究者提供参考.

关键词：机器学习特征选择迁移学习对抗神经网络人工智能

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