| 基于QoS上下文的Web服务动态合成 |
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| 引用本文： | 徐新卫,丁秋林. 基于QoS上下文的Web服务动态合成[J]. 华南理工大学学报(自然科学版), 2007, 35(1): 106-111 |
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| 作者姓名： | 徐新卫 丁秋林 |
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| 作者单位： | 南京航空航天大学,计算机应用研究所,江苏,南京,210016;南京航空航天大学,计算机应用研究所,江苏,南京,210016 |
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| 基金项目： | 国家“863”计划项目(2002AA411030)，国防基础预研项目(S0500A001) |
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| 摘 要： | 针对QoS上下文在服务合成中的不同作用,文中提出将QoS上下文模型用于服务的动态合成.利用QoS反馈控制机制,根据用户的QoS要求,在环境QoS变化的情况下,对备选的服务进行动态选择、组合和执行,并使用遗传算法作为QoS反馈机制的控制器,保证了QoS指标的确定.实验和仿真结果表明,基于QoS上下文的服务合成能够动态、自适应地进行服务的组合,并满足用户QoS的指标和要求.
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| 关 键 词： | Web服务 服务合成 服务质量 遗传算法 |
| 文章编号： | 1000-565X（2007）01-0106-06 |
| 修稿时间： | 2006-04-20 |
Dynamic Composite Web Services Based on QoS Context |
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| Xu Xin-wei,Ding Qiu-lin. Dynamic Composite Web Services Based on QoS Context[J]. Journal of South China University of Technology(Natural Science Edition), 2007, 35(1): 106-111 |
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| Authors: | Xu Xin-wei Ding Qiu-lin |
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| Affiliation: | Computer Application Institute, Nanjing Univ. of Aeronautics and Astronautics, Nanjing 210016, Jiangsu, China |
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| Abstract: | As the context of Quality of Service(QoS) is of different functions in service composing procedure,the models of QoS context are used to dynamically compose the services.According to the QoS feedback criteria and the QoS requirements of the user,the candidate services are dynamically selected,composed and implemented under the effect of various environment QoS by using genetic algorithm as the controller of the QoS feedback criteria to ensure the determination of QoS targets.Experimental and simulated results show that,by the service composition based on QoS context,the Web services are of dynamic and self-adaptive features to meet the needs of the customer. |
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| Keywords: | Web service service composition Quality of Service genetic algorithm |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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