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检索条件"任意字段=2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会"

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Framework for Efficient Letter Selection in Genetic Algorithm Based Data Mining

Framework for Efficient Letter Selection in Genetic Algorith...

引用

2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Xiaoyan Chen Shijue Zheng Department of Computer Science,Hua Zhong Normal University,Wuhan,Hubei,430079,China Tao Tao Sanya Garrison,Sanya,Hainan,572011,China

We present the design of more effective and efficient genetic algorithm based data mining techniques that use the concepts of letter *** mining involves nontrivial process of extracting knowledge or patterns from large *** Algorithms are efficient and robust searching and optimization methods that are used in data *** this paper we propose a letter selection in genetic algorithm based data mining, Explicit letter selection is traditionally done as a wrapper approach where every candidate feature subset is evaluated by executing the data mining algorithm on that *** this article we present a GA for doing both the tasks of mining and letter selection simultaneously by evolving a binary code along side the chromosome structure used for evolving the rules. Results from applying the above techniques to a real world data mining problem show that combining both the letter selection methods provides the best performance in terms of prediction accuracy and computational efficiency.

关键词： letter selection GA data mining framework self-adaptive

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An Efficient Structure Similarity Measure Method for XML documents based on Vector Space Model

An Efficient Structure Similarity Measure Method for XML doc...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Hongcan Yan~(1,2)Minqiang Li~1 Dianchuan Jin~2 Dazhuo Zhou~3 Shaohong Yan~2 1 School of Management,Tianjin University,Tianjin,300072,China 2 College of Science,Hebei Polytechnic University,Tangshan,Hebei,063000,China 3 Computer Center,Hebei University of Economics and Trade,Shijiazhuang,Hebei,050061,China

A novel way of similarity measure for XML documents structure based on frequency structured vector model is proposed against the detects of the methods in existence. In this model,all frequent subtrees of documents are viewed as structured characteristic space;the expression of document structured vector and weight function are derived and the angle cosine between Eqtwo vectors is applied to measure similarity of the two *** the same time,the algorithm TreeMiner is reformed to improve the efficiency of mining frequency subtrees in a forest from data structure and mining process,which entitled TreeMiner+.The experimental results show that this method acquires very high precision and accuracy, the time cost of algorithm TreeMiner+ is reduced three times when minimum support is 70% or higher.

关键词： Document Structure Similarity Embedded Subtree Frequent Structured Vector Model Frequent Subtree Class Extension Scope-List Join

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Digital Validation Code Recognition Algorithm Research and Design

Digital Validation Code Recognition Algorithm Research and D...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Peng Cui Qingping Guo Pengpeng Duan School of Computer Science and Technology,Wuhan University of Technology,Wuhan,Hubei 430063,China

Putting forward a method of extracting the image of validation code base on the amount of information. First and foremost,the image of validation code is processed by Otsu Law,then removes the isolated point in the image and makes use of Median Filtering to *** split the image up into several small digital images,we use the method of Finite element to divide the split digital image into a lot of basal *** should compute the amount of information in each basal unit,at the same time;the connecting relationships of each basal unit are *** sort amount of information in each basal unit according to descending *** choose a suitable threshold value so that we can remove the basal unit that amount of information is below the threshold *** last we construct the relationship map of the digital image according to the connecting relationships of each basal unit in order to extract the image *** we carry out pattern recognition by invariant moments so that we can recognize the digital validation code.

关键词： Amount of Information Invariant Moment Threshold Value Connecting Relationship

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Combining Circulant Space-Time Coding with IFFT/FFT and Spreading

Combining Circulant Space-Time Coding with IFFT/FFT and Spre...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Xiaonan Chen Peilv Ding Department of Information Engineering,Wuxi Professional College of Science and TechnologyWuxi,Jiangsu 214028,P.R.China

Circulant structures were among the first space-time coding techniques ever used for Multiple-Input Multiple-Output(MIMO)systems due to their simplicity and full *** this correspondence,the circulant structure is combined with an inverse fast Fourier transform(IFFT)at the transmitter and a fast Fourier transform(FFT)at the receiver due to the fact that a circulant matrix is diagonalized by the discrete Fourier transformation *** this method,the spatial mixing effect of the MIMO channel is decoupled but the diversity gain is *** propose to recover the diversity loss by spreading the transmitted symbol *** to the full diversity design criterion for our scheme,the precoding or constellation rotation matrices for the signal diversity design problems can be used as spreading matrix to achieve full *** proposed scheme is also full rate and can be easily applied to any number of transmit *** simulation results show that the performance of our scheme is close to the performance of the ideal orthogonal space-time code and much better than the conventional circulant space-time code.

关键词： MIMO Space-time Circulant Diversity Spreading

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The Definition and Implementation of XML Document Update Language Based on Xquery

The Definition and Implementation of XML Document Update Lan...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Hongcan Yan~(1,2) Minqiang Li~2 Baoxiang Liu~1 Dianchuan Jin~1 Wei Gao~3 1 College of Sciences,HeBei Polytechnic University,Tangshan,Hebei Province,063000 China 2 School of Management,TianJin University,Tianjin,300072 China 3 Department of Computer Science,TangShan Normal University,Tangshan,063000 China

In order to fully evolve XML into a universal data representation and sharing format,we must allow users to specify updates to XML document and must develop' techniques to process them *** capabilities are important for modifying XML *** World Wide Web Consortium has developed a standard for XML query language,called XQuery,according to it,begin with defining XML document update granularity,design a XML update language XUL in this paper,propose a set of constructs for expressing six updating operations in both an ordered and unordered XML data model,and map this constructs into the syntax of the XQuery *** the end,we provide a logical frame for implementing XUL within an XML repository based on a relational database system.

关键词： Primitive operation Update granularity XML document update Xquery Auto-Trigger

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A Studying the Conceptual Model and Critical Technology Based on Enrterprises Finance System

A Studying the Conceptual Model and Critical Technology Base...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Ming Ni College of Economics and Management,East China Jiaotong University,Nanchang,Jiangxi,330013,China

The tradition financial accounting pattern has played an important roles in enterprises financial field last century, the tradition accounting pattern has faced great challenge,with the development of computer,network technology and the change of manufacturing pattern, etc..Constructing a practical and feasible financial system(FS)conceptual model is the premise of improving the competence of FS *** view of such two important platforms as technology platform and corporate culture platform that are provided by Enterprises Informatization(EI),the conceptual model of FS for SDN node enterprise,which includes two platforms and a core part,a financial information operation circulation,is designed in the *** whole operation process of FS conceptual model is described in terms of technology,tool and corporate *** node enterprise can refer to the model when running into the FS plight.

关键词： Financial Accounting Pattern Conceptual Model Critical Technology SDN

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QoS based Distributed Multipath Routing and Admission Control Algorithm for IPv6

QoS based Distributed Multipath Routing and Admission Contro...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Muhammad Omer Farooq Sadia Aziz Computer Engineering Department Center For Advanced Studies in Engineering IslamabadPakistan

Multimedia applications running on Intemet require minimum delay,minimum jitter and minimum packet *** models such as IntServ and DiffServ try to satisfy QoS needs of an *** of the common problems with these models is that they do not use any dynamic mechanism to find multiple paths to the destination network for routing QoS sensitive flows on a path that is the most appropriate for the QoS requirement of the *** can lead to a situation when we may need to deny admission to further QoS flows till some resources are made available."Distributed QoS based Multipath Routing Algorithm for IPv6",uses a QoS based Multipath Routing Algorithm(Qos-MPR)which can work alongside the traditional routing algorithm and it is able to construct multiple Label Switched Paths to a particular *** enables us to inject more QoS sensitive flows in the network without deploying excess *** based Multipath Routing will not only allow to inject more traffic into the network but it will also provide efficient label switching mechanism using the"Flow Label"field of the IPv6 *** can also serve as a simple load balancing *** results have shown that QoS-MPR provides better packet delivery ratio and its QoS flows experience low delay.

关键词： QoS routing DiffServ Admission Control Label Switched Forwarding Table(LSFT)

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Application of Bayesian Network Learning Methods in E-learning

Application of Bayesian Network Learning Methods in E-learni...

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Qing Yang~(1,2)Lianfa Zhang~2 Zhufeng Huang~2 Xueping Wang~2 1 Center for Language& Language Education,Central China Normal University,Wuhan,Hubei 430079,P.R.China 2 Department of Computer Science,Central China Normal University,Wuhan,Hubei 430079,P.R.China

E-learning is becoming one of the most important educational *** more and more organizations and institutions are moving towards the e-learning strategy, self-learning model becomes a big challenge. Background knowledge and learning objectives of various groups of students on the network are very ***-learning system,which uses different learning programs for different students,can enhance the efficiency of learning *** a self-learning system,the algorithm dealing with uncertainty factors of Self-learning model is very *** network artifice is a very effective one within various methods dealing with *** this paper,we applied Bayesian network method to self-learning model;designed Bayesian network structure in a self-learning model;assigned the local probability distribution and discussed the way to acquire and propagate related *** practice has proven Bayesian network approach for self-learning model is a very effective method.

关键词： Bayesian Network Learning Methods self-learning e-learning DAG

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ZE:Virtual Environment of Large Scale Worm Tracing

ZE:Virtual Environment of Large Scale Worm Tracing

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Wei Shi Qiang Li Jian Kang College of Computer Science and Technology,JiLin University,Changchun,JiLin 130012,China

Network worms have been a serious security threat on the *** worm propagation path can identify the overall structure of a worm attack's *** detect and defense large scale Interact worms,setting up a convenient and safe experimental environment that capable of running and observing real world worm become an important work,it can be a large scale worm test bed for forensic *** provide a systemic analysis of large-scale worm propagation tracing experiment strategy which is based on virtual machine technology by setting up an experimental environment called zooecium(ZE).First,the framework of ZE is ***,the design and control of ZE is ***,ZE is analyzed with experiments. Experimental results show that ZE can trigger large-scale worm outbreaks within the,controllable scope of human,observe propagation process of the worm,experiment detection and defense techniques, discover worm propagation characteristic such as scanning method and propagation process,real-time collect network traffic and propagation process, investigate network traffic,dynamically throw out the result,launch speculate algorithm for reconstructing out propagation path of the *** actual worm propagation process can be captured and compared with the results using tracing algorithm.

关键词： Worm Environment Tracing

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An Elevated Trust-based Security for Mobile Ad-hoc Networks

An Elevated Trust-based Security for Mobile Ad-hoc Networks

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2008年国际电子商务、工程及科学领域的分布式计算和应用学术研讨会

作者： Yanli Pei Shijue Zheng Department of Computer Science,Central China Normal University,Wuhan,Hubei,430079,China

Since mobile ad-hoc networks always applies in those situations such as emergencies,crisis management, military and healthcare,so message security is of paramount importance in ***,because of the absence of a fixed infrastructure with designated centralized access points,implementation of hard-cryptographic security is a challenging *** this paper,we propose a novel method of message security using elevated trust-based *** trusted nodes are given lower number of self-encrypted,parts of a message,making it difficult for malicious nodes to gain access to the minimum information required to break through the encryption *** trust levels, we make multi-path routing flexible enough to be usable in networks with'vital'nodes and absence of necessary *** addition,using trust levels,we avoid non-trusted routes that may use brute force attacks and may decrypt messages if enough parts of the message are available to *** results,coupled with theoretical justification,affirm that the proposed solution is much more efficient than the traditional routing algorithms.

关键词： Mobile Ad-hoc Networks Secure Routing Protocol Elevated Trust-based Routing Protocol Trust-level model Judge Rules and Trust-levef Evaluation

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