电子学报2013，Vol.41Issue(1)：117-122,6.DOI:10.3969/j.issn.0372-2112.2013.01.021
物联网服务动态评价选择方法研究
Service Selection Algorithm Based on Dynamic Assessment for Web of Things
摘要
Abstract
Due to WoT (Web of Things) is composed of numbers of resources-limited devices, it is a challenging work that the optimal web service is selected from a similar functionality service group based on the non-functional properties (QoS) without heavy interactive query process in SOA (Service Oriented Architecture).This work focus on the dynamic update process of QoS attributes vector and the optimal service selection algorithm based on the client's feedback in WoT.The service time is estimated by the REM (Random Exponential Marking) which use the concurrent clients number as the price index, and the exponentially weighted average of the current service expense and the previous record.The service availability is estimated by the online probability with the service state detection.The Empirical results based on NS-3.13 simulation show that the accuracy of optimal web service selection based on our presented approaches is significantly better than the simple QoS attributes.关键词
物联网/服务选择/服务质量/TOPSIS评价Key words
web of things/ service selection/ quality of service/TOPSIS (technique for order preference by similarity to an ideal solution) assessment分类
信息技术与安全科学引用本文复制引用
何秀青,王映辉..物联网服务动态评价选择方法研究[J].电子学报,2013,41(1):117-122,6.基金项目
国家自然科学基金(No.61072151,No.61003061) （No.61072151,No.61003061）
高等学校博士学科点专项科研基金(No.20090202120006) （No.20090202120006）
陕西省重大科技创新项目(No.2009ZKC02-08) （No.2009ZKC02-08）
陕西省教育厅产业化培育项目(No.09JC08) （No.09JC08）
