基于语义推理的交通信息服务组合优化模型

发布时间：2018-04-15 15:29

本文选题：交通信息服务 + 服务组合　；参考：《长安大学》2017年硕士论文

【摘要】：随着交通行业的快速发展,传统的交通诱导方式及信息服务发布方式的局限性越来越明显,已经无法满足人们的出行信息服务需求。如何将交通信息进行整合以及正确、高效地从众多候选服务中选择可用性最高的服务对成功构建面向服务的应用至关重要。为了选择具有高可用性的交通信息服务同时体现用户的主观性和服务质量(Quality of Service简称QoS)的客观性,即服务不仅要在功能上满足用户的要求,其服务质量也要有保证。由于服务质量是用户在进行服务选择时的依据,因此计算服务的QoS具有重要的意义。本文从理论研究入手对交通信息服务的系统流程构建及交通信息服务组合优化方法进行研究,主要研究内容如下:(1)从服务的概念入手,根据应用背景描述交通信息服务的定义,根据研究机构对服务组合的描述及交通环境的特点,描述交通信息服务组合的定义及交通信息服务组合具备的特征。并在以上描述基础上提出交通信息服务的QoS关键属性指标模型及数据标准化处理技术。(2)以构建交通信息服务组合流程为目的,描述服务组合模板的概念及表示,并分析目前主流的服务组合方法,结合组合模板、工作流技术、语义推理技术的服务组合方法用于服务组合的流程构建。(3)根据提出的服务组合方法设计服务组合系统的优化流程,包括系统的设计架构及工作流程。在优化算法上,根据交通信息服务的QoS关键属性指标模型,从候选服务中选出最优的服务并组合返回给用户。交通信息服务的QoS关键属性指标模型包括基于“宽容度”的QoS指标数据的标准化、QoS属性权重和指标权重的确定。
[Abstract]:With the rapid development of the transportation industry, the limitations of the traditional traffic guidance and information service delivery methods are becoming more and more obvious, which can no longer meet the needs of people's travel information services.How to integrate traffic information correctly and efficiently select the most available service from many candidate services is very important for the successful construction of service-oriented applications.In order to select the traffic information service with high availability and reflect the subjectivity of the user and the objectivity of the quality of service, that is, the service should not only meet the requirements of the user in function, but also guarantee the quality of service.Because the quality of service is the basis of service selection, it is very important to calculate the QoS of service.This paper starts with the theoretical research on the system flow construction of traffic information service and the optimization method of traffic information service composition. The main research contents are as follows: 1) starting with the concept of service, describing the definition of traffic information service according to the application background.According to the description of service composition and the characteristics of traffic environment, the definition of traffic information service composition and the characteristics of traffic information service composition are described.On the basis of the above description, the paper puts forward the QoS key attribute index model of traffic information service and data standardization processing technology. It describes the concept and representation of the service composition template in order to construct the traffic information service composition process.And analyzes the current mainstream service composition methods, combined with composition template, workflow technology,The service composition method of semantic reasoning technology is used to construct the process of service composition. (3) according to the proposed service composition method, the optimized flow of service composition system is designed, including the design framework and workflow of the system.In the optimization algorithm, according to the QoS key attribute index model of the traffic information service, the optimal service is selected from the candidate service and returned to the user.The key attribute index model of QoS in traffic information service includes the determination of standardized attribute weight and index weight of QoS index data based on "tolerance".
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：U495;TP393.09

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