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10th International Conference on Quality software, QSIC 2010

作者： Yu, Huiqun Fan, Guisheng Chen, Liqiong Liu, Dongmei Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai 201112 China Department of Computer Science and Information Engineering Shanghai Institute of Technology Shanghai 200235 China

ISBN: (纸本)9780769541310

Service composition is an important means for integrating the individual Web services for creating new value added systems that satisfy complex demands. Since, Web services exist in the heterogeneous environments on the Internet, study on how to guarantee the reliability of service composition in a distributed, dynamic and complex environment becomes more and more important. This paper proposes a service composition net(SCN) and fault-tolerant strategy to improve the reliability of service composition. The strategy consists of static strategy, dynamic strategy and exception handling mechanism, which can be used to dynamically adjust component service for achieving good reliability as well as good overall performance. SCN is adopted to model different components of service composition. The fault detection and fault recovery mechanisms are also considered. Based on the constructed model, theories of Petri nets help prove the consistency of processing states and the effectiveness of the strategy. A case study of Export Service illustrates the feasibility of proposed method. © 2010 IEEE.

关键词： Web services

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The improved research on property-based remote attestation

The improved research on property-based remote attestation

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2010 International Conference on computer Application and System Modeling, ICCASM 2010

作者： Chen, Ting Yu, Huiqun Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China Informatization Office East China University of Political Science and Law Shanghai 201620 China Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai 201112 China

ISBN: (纸本)9781424472369

BPBA is a remote attestation model based on elliptic curve discrete logarithm bilinear paring, which includes attribute-configuration credential protocol, sign protocol, and verification algorithm. It can shorten the required key length and reduce bandwidth usage at the same premise of safety performance requirements, as well as ensure platform configurations not to be exposed to the platform while improving operating efficiency. On the other hand, the improved sign algorithm provides an effective model to avoid double counting, and a certificate revocation algorithm is also given effective solution when a certificate is invalid. BPBA includes more trusted computing platform parameters in order to resist replay attacks, and take use of information hiding technology to hide certificates and effectively preventing anyone with a source of certificate misuse of the certificate. Therefore, relative to the existing strong-RSA based property remote attestation model which needs longer key length, and has low computational efficiency, BPBA has a very good performance and algorithm improvements. © 2010 IEEE.

关键词： Computational efficiency

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Test case reusability metrics model

Test case reusability metrics model

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2010 2nd International Conference on computer Technology and Development, ICCTD 2010

作者： Zhang, Juan Cai, Lizhi Tong, Weiqing Yuan, Song Li, Ying School of Computer Engineering and Science Shanghai University Shanghai China Jiangxi University of Finance and Economics Jiangxi China Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai China East China University of Science and Technology Shanghai China Nanjing XiaoZhuang University NanJing China

ISBN: (纸本)9781424488438

As organizations implement systematic reuse test cases in software testing to improve productivity and quality, they must be able to measure reusability of test case and identify the most effective reuse strategies. This is done with Test Case Reusability Metrics Models(TCRMM). In this article we survey metrics of test case reusability, and provide reusability factors division that will help establish reusability assessment model. It combines four metrics factors into reusability metrics based on analytic hierarchy process. The prominent characteristic of this model is that the process of reusability metric is automated when the judgment matrix has been constructed. © 2010 IEEE.

关键词： Reusability

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Agent-Based Online Quality Measurement Approach in Cloud Computing Environment

Agent-Based Online Quality Measurement Approach in Cloud Com...

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IEEE WIC ACM International Conference on Web Intelligence (WI)

作者： Zhenyu Liu Tiejiang Liu Tun Lu Lizhi Cai Genxing Yang School of Computer Science Fudan University China Shanghai Key Laboratory of Computer Software Evaluating and Testing China

This paper studies online quality measurement in cloud computing environment. The paper analyzes concentration measure evaluation method of the current software quality evaluation system. As is known to all, the existing evaluation technology uses concentrated evaluation before run-time. By testing and analyzing results, the quality is obtained. In this paper, by analyzing the features in cloud computing environment, we consider that service-oriented evaluation should be mainly based on runtime online measurement. The paper puts forward agent-based online measure infrastructure, which is evaluated by distributed assessment in service computing environment A quality model and corresponding online data collection strategy are described. In this approach, the previous quality evaluation, which is concentrated and simulating in a simulated environment, is substituted. Then, a novel measure method of quality data acquisition, which is based on distributed agent technology, is established. So, during online service operation, the obtained data can make measurement results to be accurate and credible.

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Test coverage for collaborative workflow application based on Petri Net

Test coverage for collaborative workflow application based o...

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International Conference on computer Supported Cooperative Work in Design

作者： Zhnenyu Liu Tiejiang Liu Lizhi Cai Genxing Yang School of Computer Science Fudan University Shanghai China Evaluating and Testing Shanghai Key Laboratory of Computer Software Shanghai China

Lots of collaborative works are developed by workflow at present. The modeling of workflow is mainly by Petri Net. This paper studies the test coverage of collaborative workflow system to improve the system quality. By analyzing many Petri-Net models, the paper puts forward generic advance Petri Net model. And other workflow Petri Net models can be compatible with the generic Petri Net. Then test coverage strategy is considered and test case is designed according to the strategy. This method not only can meet the requirement of test coverage, but also can assist test case design and further execution of test case. Finally, a typical example is introduced to illustrate effectiveness of this method in collaborative workflow application.

关键词： Collaborative work Application software software testing Collaborative software Humans computer science Collaboration System testing software engineering software systems

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An optimization approach for service deployment in service oriented clouds

An optimization approach for service deployment in service o...

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International Conference on computer Supported Cooperative Work in Design

作者： Tiejiang Liu Tun Lu Zhenyu Liu School of Computer Science Fudan University Shanghai China Evaluating and Testing Shanghai Key Laboratory of Computer Software Shanghai China

In service oriented cloud, in order to meet the different users' service requirements, the cloud venders need to manage the service applications' deployment effectively first. During the deployment process, the deployment costs and the influence of service deployment to the cloud are very important issues to be paid attention to, which lacks in current research. In this paper, we design a novel optimization approach for service deployment to address above issues, which works in a service deployment framework. The approach can improve the deployment efficiency and reduce the deployment costs. Atom-services, the basic units of service application, are partitioned to different service families with its compatibility and installation policy. We present three algorithms to automatically standardize the installation expressions, simplify and optimize the installation expression series during the service deployment process respectively. An analysis about the service deployment result is given in the paper and the experiment data demonstrates the approach's efficiency.

关键词： Cloud computing Application software Cost function Design optimization computer science Collaborative work Laboratories software testing Conference management Partitioning algorithms

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A protocol for bilinear parings-based attestation

A protocol for bilinear parings-based attestation

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2nd International Conference on Networks Security, Wireless Communications and Trusted Computing, NSWCTC 2010

作者： Chen, Ting Yu, Huiqun Chen, Wei Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China Informatization Office East China University of Political Science and Law Shanghai 201620 China Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai 201112 China School of Mathematics and Information Shanghai Lixin University of Commerce Shanghai 201620 China

ISBN: (纸本)9780769540115

One of the objectives of trusted computing is to provide remote attestation method that is able to confirm the status of remote platform or application. Existing property-based attestation is based on the strong-RSA assumption and the required key length is too long. What's more, a considerable number of RSA-length operations having to be performed which lead to low computational efficiency. Bilinear parings-Based Attestation model, which based on elliptic curve discrete logarithm bilinear paring, can shorten the required key length and reduce bandwidth usage at the same premise of safety performance requirements, as well as ensure platform configurations not to be exposed to the platform while improving operating efficiency. On the other hand, the model includes many trusted computing platform parameters in order to resist replay attacks, and take use of information hiding technology to hide certificates and effectively preventing anyone with a source of certificate misuse of the certificate. © 2010 IEEE.

关键词： Trusted computing

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Quantifying software security based on stochastic Petri nets

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Journal of Computational Information Systems 2010年第9期6卷 3049-3056页

作者： Yang, Nianhua Yu, Huiqun Sun, Hua Qian, Zhilin Department of Computer Science and Engineering East China University of Science and Technology Shanghai 200237 China Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai 201112 China

To quantitatively predict software security, a component security model is proposed based on Stochastic Petri Nets (SPNs). An isomorphic Markov Chain (MC) is obtained from the component SPN model. A quantitative security evaluation prediction method is proposed. The prediction value is calculated according to the steady states probability distribution of MC, obtained from a software SPN model. Sensitivity analysis method is proposed. It provides a mean to trace back to the critical components for security enhancing. A case study shows the applicability and feasibility of our method. © 2010 Binary Information Press.

关键词： Sensitivity analysis

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Analyzing Real-time Schedulability of Resource-oriented Distributed Real-time Embedded software

Analyzing Real-time Schedulability of Resource-oriented Dist...

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2010 2nd IEEE International Conference on Information Management and Engineering(2010年IEEE第二届信息管理与工程国际会议 IEEE ICIME 2010)

作者： Liqiong Chen Yunxiang Liu Guisheng Fan Department of Computer Science and Information EngineeringShanghai Institute of Technology Shanghai Shanghai Key Laboratory of Computer Software Evaluating and Testing Shanghai 201112 China Departme

As computer systems become increasingly internetworked, Distributed Realtime Embedded (DRE) software is becoming increasingly common and important, a challenging problem faced by researchers and developers of DRE software is how to devise and implement a method that can effectively analyze requirements in varying operational conditions. In this paper, a Distributed Realtime Embedded net (DREN) is proposed as software design specification modeling tool. The basic tasks, function module and communication process are modeled by using DREN, thus forming the entire application by making use of Petri net’s synthesis operation. Time Reachability Graph is adopted to analyze the correctness of DRENmodel, the basic properties of DRE system are also considered. Finally, a specific example is given to simulate the analytical process, the results show that the method can be a good solution to analyze DRE software.

关键词： Embedded software Real time systems Distributed computing Embedded computing Information analysis computer science Application software Processor scheduling Laboratories software testing

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Feature-based similarity retrieval in Content-based image retrieval

Feature-based similarity retrieval in Content-based image re...

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7th Web Information Systems and Applications Conference, WISA 2010, 5th Workshop on Semantic Web and Ontology, SWON 2010, 4th Workshop on Electronic Government Technology and Application, EGTA 2010

作者： Xu, Junling Xu, Baowen Men, Shuaiqiu School of Computer Science and Engineering Southeast University China Shanghai Key Laboratory of Computer Software Testing and Evaluating China Department of Computer Science and Technology Nanjing University Nanjing China School of Engineering Hong Kong University of Science and Technology Hong Kong School of Engineering Hong Kong University of Science and Technology China

ISBN: (纸本)9780769541938

Content-based image retrieval (CBIR), providing query by image examples other than key words, is a hot topic in recent years. Querying by words mainly depends on the performance of crawler, whereas query by example is more unpredictable, since feature extraction is still challenging due to the rich content of the image. This paper focuses on the issue of similarity retrieval in high-dimensional space, a problem of performing nearest-neighbor queries efficiently and effectively over large high-dimensional databases. Although some arguments have advocated that nearest-neighbor queries do not even make sense for high-dimensional data, we review the existing techniques of working in vector space of high dimension, and provide our unique view towards the issue of time complexity and precision during similarity retrieval in CBIR. © 2010 IEEE.

关键词： Vector spaces

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