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web service selection ALGORITHM BASED ON PRINCIPAL COMPONENT ANALYSIS

Journal of Electronics(China) 2013年第2期30卷 204-212页

作者： Kang Guosheng Liu Jianxun Tang Mingdong Cao Buqing Department of Computer Science and Engineering Hunan University of Science and Technology School of Computer Science Fudan University

Existing web service selection approaches usually assume that preferences of users have been provided in a quantitative form by users. However, due to the subjectivity and vagueness of preferences, it may be impractical for users to specify quantitative and exact preferences. Moreover, due to that Quality of service (QoS) attributes are often interrelated, existing web service selection approaches which employ weighted summation of QoS attribute values to compute the overall QoS of web services may produce inaccurate results, since they do not take correlations among QoS attributes into account. To resolve these problems, a web service selection framework considering user's preference priority is proposed, which incorporates a searching mechanism with QoS range setting to identify services satisfying the user's QoS constraints. With the identified service candidates, based on the idea of Principal Component Analysis (PCA), an algorithm of web service selection named PCA-WSS (web service selection based on PCA) is proposed, which can eliminate the correlations among QoS attributes and compute the overall QoS of web services accurately. After computing the overall QoS for each service, the algorithm ranks the web service candidates based on their overall QoS and recommends services with top QoS values to users. Finally, the effectiveness and feasibility of our approach are validated by experiments, i.e. the selected web service by our approach is given high average evaluation than other ones by users and the time cost of PCA-WSS algorithm is not affected acutely by the number of service candidates.

关键词： Principal Component Analysis (PCA) web service selection Quality of service (QoS) Overall evaluation

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Toward a More Accurate web service selection Using Modified Interval DEA Models with Undesirable Outputs

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Computer Modeling in Engineering & Sciences 2020年第5期123卷 525-570页

作者： Alireza Poordavoodi Mohammad Reza Moazami Goudarzi Hamid Haj Seyyed Javadi Amir Masoud Rahmani Mohammad Izadikhah Department of Computer Engineering Borujerd BranchIslamic Azad UniversityBorujerdIran Department of Mathematics Borujerd BranchIslamic Azad UniversityBorujerdIran Department of Mathematics and Computer Science Shahed UniversityTehranIran Department of Computer Science Khazar UniversityBakuAzerbaijan Department of Mathematics Arak BranchIslamic Azad UniversityArakIran

With the growing number of web services on the internet,there is a challenge to select the best web service which can offer more quality-of-service(QoS)values at the lowest *** challenge is the uncertainty of QoS values over time due to the unpredictable nature of the *** this paper,we modify the interval data envelopment analysis(DEA)models[Wang,Greatbanks and Yang(2005)]for QoS-aware web service selection considering the uncertainty of QoS attributes in the presence of desirable and undesirable *** conduct a set of experiments using a synthesized dataset to show the capabilities of the proposed *** experimental results show that the correlation between the proposed models and the interval DEA models is ***,the proposed models provide almost robust results and represent more stable behavior than the interval DEA models against QoS ***,we demonstrate the usefulness of the proposed models for QoS-aware web service *** results indicate that the proposed models significantly improve the fitness of the resultant compositions when they filter out unsatisfactory candidate services for each abstract service in the preprocessing *** models help users to select the best possible cloud service considering the dynamic internet environment and they help service providers to improve their web services in the market.

关键词： Cloud computing interval data envelopment analysis interval entropy web service selection undesirable outputs

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QOS-AWARE web service selection ALGORITHMS BASED ON SMALL-WORLDS NETWORK

QOS-AWARE WEB SERVICE SELECTION ALGORITHMS BASED ON SMALL-WO...

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第八届分布式计算及其应用国际学术研讨会

作者： Xiaoming XU,Nan JIANG,Qiuling DING College of Information Science and Technology, Nanjing University of Aeronautice and Astronautiec,Nanjing,210016,China

In this paper,a theory based on the small world of a QoS-aware web service selection Algorithm was proposed. This algorithm use small-world network theory and ant colony algorithm,not only provide better optimization path rapidly, but also optimize load balancing on the service *** solves the shortcoming that only considering the choice of the optimal path the common algorithm,losing sight of making the optimal path becoming the hottest path because of the frequent choice of the optimal path,on the contrary,that making optimal path turn into the bottleneck of the system’s. Simulation and experiment showed that the algorithm has efficient services selection performance.

关键词： web service selection QoS-aware Small-world Network Ant Colony Algorithm

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Provide Feedback to service Provider Based On the Ranking of web service with Hybrid QoS

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中国科技纵横 2017年第11期 248-253页

作者： Jun Liu Youhong Ling Wenjing Du Guoqiang Li Ministry of Public Security Key Laboratory of Urban Traffic Management Integration and Optimization Technology Anhui Hefei 230088 Anhui Keli Information Industry Co. Ltd. Anhui Hefei 230088

web service selection based on the QoS is still a hot topic in the area of service computing. For the past web service QoS are mostly describe in single data type, this paper present hybrid QoS to describe the web service. The hybrid QoS contains real number type, interval type and language type. The web service selection based on hybrid QoS used the improved TOPSIS method. Experiment results show that the web service selection based on hybrid QoS has higher stability and reliability. Meanwhile, this paper presents the method for service provider to improve their web service by the feedback from web service consumers. service provider can improve their service by the feedback in order to more and more consumers select their service. Thus the service provider could get greater benefits and increase the competitiveness of their services with other services.

关键词： web service selection Quality of service (QoS) service provider TOPSIS feedback

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FEWSS-FRAMEWORK TO EVALUATE THE service SUITABILITY AND PRIVACY IN A DISTRIBUTED web service ENVIRONMENT

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International Journal of Modeling, Simulation, and Scientific Computing 2014年第1期5卷 68-104页

作者： D.CHANDRAMOHAN T.VENGATTARAMAN P.DHAVACHELVAN R.BASKARAN V.S.K.VENKATACHALAPATHY Department of Computer Science Pondicherry University PondicherryIndia Department of Computer Science and Engineering Anna University ChennaiIndia Department of Mechanical Engineering Sri Manakula Vinayagar Engineering College Pondicherry India

This paper focuses on addressing the problem of web service monitoring by evaluating its suitability and privacy in a distributed web service environment(DWS).The need for web services monitoring and evaluation is necessary because the quantity and quality of retrieved web services generally does not fulfill the demands or requirements of the web service *** the literature,many authors proposed suitable solutions for checking the quality of web service in an ad hoc scenario but there is no available testbed for this *** this work,it is proposed to develop a framework as a testbed for evaluating the web service for its suitability and *** order to verify,the retrieved web services fulfill the demands and requirements of the requester in a DWS *** Framework to Evaluate the web service Suitability(FEWSS)supports service providers in modeling the services with testbed and to design service behavior to comply the service *** generates run-time instances of web services,client’s requests,service registries and other entities in order to emulate realistic SOA *** generating a real testbed,our approach assists in runtime test for provider system/*** focus has been put on the privacy policy extensibility to allow the service providers and users in a complex *** also provides an intuitive interface for testing all services under SOA control.

关键词： Distributed web service privacy service-oriented architecture quality of service service evaluation web service selection UDDI

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一种基于质量的web服务选择方法

一种基于质量的Web服务选择方法

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第二十一届中国数据库学术会议

作者：陈宏彭敦陆王晓玲周傲英复旦大学计算机科学与工程系

web服务技术是一种组件集成技术,提供了组件之间跨平台的相互操作的能力。它在Internet的环境下将服务进行整合,使得各种各样的服务可以被组合在一起,为Internet上的用户所调用。但当前web服务技术也面临一些急需解决的问题:在In-

关键词： QoS UDDI web service selection

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