计算机工程与应用 ›› 2011, Vol. 47 ›› Issue (34): 231-234.

• 工程与应用 • 上一篇    下一篇

数据服务QoS评估及择优机制研究

王连备,贲 进,范永弘   

  1. 信息工程大学 测绘学院,郑州 450052
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2011-12-01 发布日期:2011-12-01

Research on data service quality evaluation and selection mechanism

WANG Lianbei,BEN Jin,FAN Yonghong   

  1. Institute of Surveying and Mapping,Information Engineering University,Zhengzhou 450052,China
  • Received:1900-01-01 Revised:1900-01-01 Online:2011-12-01 Published:2011-12-01

摘要: 针对当前UDDI服务不能保证服务发现的有效性及数据服务效率的问题,提出了基于QoS的数据服务择优机制,定义了针对数据服务的QoS评估模型及评估要素的量化规则,给出了数据服务QoS的量化计算方法及择优策略;结合UDDI和MDS技术设计和实现了支撑数据服务择优机制的元数据服务,进行了基于QoS的数据服务择优实验。实验结果表明,提出的基于QoS的数据服务择优机制能够有效地提高数据服务的效率。

关键词: 数据服务, 服务发现, 服务评估, 服务质量

Abstract: Aiming at the problem which the Universal Description,Discovery,and Integration(UDDI) service is unable to ensure the availability and efficiency of data services,this paper presents a data service selection mechanism based on Quality of Service(QoS).An evaluation model and the evaluation factors are defined,calculating method for QoS numerical quantization of data service and the service selection strategy are given.A metadata service is designed and implemented based on UDDI and Monitoring Discovery Service(MDS) technologies to support the data service selection mechanism.The results of tests show that the QoS-based data service selection mechanism can improve efficiency of data services.

Key words: data service, service discovery, service evaluation, Quality of Service(QoS)