基于意图的物联网服务描述与发现  

Intent-based IoT service description and discovery

作　　者：刘星宇 江凌云[1,2] Liu Xingyu;Jiang Lingyun(School of Communication&Information Engineering,Nanjing University of Posts&Telecommunications,Nanjing 210003,China;Institute of Internet of Things,Nanjing University of Posts&Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003 [2]南京邮电大学物联网研究院,南京210003

出　　处：《计算机应用研究》2022年第9期2731-2737,2756,共8页Application Research of Computers

基　　金：江苏省重点研发项目(BE2020084-4)。

摘　　要：在物联网服务发现过程中,用户通常用自己的意图表达需求,而服务描述是对服务功能的说明,因此两者的不匹配会影响服务发现的准确率。同时随着服务的种类不断增多,服务发现的准确率不断降低。为了解决上述问题,提出在物联网服务描述中引入意图服务本体的方法,并在意图服务本体中扩展服务上下文和QoS。扩展后的意图服务本体存储在语义化服务描述OWL-S文件中,能够以意图的方式表达服务功能,丰富物联网服务描述的语义,提高服务发现的准确率。仿真结果表明,所提服务描述方法以及相应的服务发现算法相对于传统服务发现方法能提升6.7%的准确率。In the process of Internet of Things service discovery,users usually express their needs with their own intentions,while service description is the description of service functions,so the mismatch between the two will affect the accuracy of service discovery.At the same time,the accuracy of service discovery decreases with the increasing of service types.In order to solve the above problems,this paper proposed a method of introducing intentional service ontology into the description of IoT services,and extended the service context and QoS in the intentional service ontology.The extended intentional service ontology was stored in OWL-S(ontology Web language for services)files,which could express service functions in an intentional way,enrich the semantics of IoT service description,and improve the accuracy of service discovery.Simulation results show that the proposed service description method and the corresponding service discovery algorithm can improve the accuracy of 6.7%compared with the traditional service discovery method.

关 键 词：意图服务本体 上下文 服务质量 服务描述 服务发现 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]