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电子学报  2013 

物联网服务动态评价选择方法研究

DOI: 10.3969/j.issn.0372-2112.2013.01.021, PP. 117-122

Keywords: 物联网,服务选择,服务质量,TOPSIS评价

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Abstract:

对于物联网WoT面向服务SOA的软件架构成中基于服务质量QoS选择最优服务的问题,给出了反馈控制的QoS属性向量动态更新过程和服务动态评价选择方法.基于WoT设备资源受限的特点,通过指数加权平均和以并发引用服务的客户端个数为价格因素的随机指数标记REM方式估计服务时间,在系统在线概率中加入服务相邻状态检测实现服务可用性的估计,基于偏好权值和QoS属性向量通过TOPSIS过程选择最优服务.NS-3.13的模拟实验结果表明基于QoS属性向量动态更新选择最优服务的准确性明显优于简单QoS属性向量.

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