面向用户需求的服务发现研究

发布时间：2018-04-06 03:27

本文选题：服务发现　切入点：用户需求　出处：《南京邮电大学》2015年硕士论文

【摘要】：服务发现是面向服务的体系结构(Service-Oriented Architecture)中的重要环节。随着信息技术的不断发展以及网络的逐步普及,服务数量和服务属性呈现大规模化以及多样化的特性,用户如何从大规模的候选服务集中发现符合需求的服务成为研究者们需要关注的问题。此外,在服务发现的过程中用户的个性化需求越来越受到研究者的重视,如何将用户的个性化需求描述结合到服务发现的过程中从而发现符合用户需求的服务,成为需要关注的研究点之一。针对以上情况,本文对大规模服务环境下的服务发现方法进行了相关研究,提出了面向用户需求的服务发现方法,包括基于本体的用户需求的描述方法研究和基于用户潜在意向的服务发现方法的研究。主要工作如下:首先,本文就如何描述用户的个性化需求进行了研究,通过构建用户特征信息本体对用户需求偏好概念进行描述,并且利用获取到的用户信息构建用户特征信息描述集合,最后形成用户需求描述集合,完成对用户需求的形式化描述。从而改善现有的服务发现方法中服务描述语言与用户需求描述存在异构性的问题,能够在一定程度上提高服务发现的效率。其次,本文就如何基于用户需求实现服务发现进行了研究,提出了用户潜在意向的概念来表示用户在服务发现时存在的某些潜在意图。用户潜在意向包括用户偏好意向和用户从众意向,前者用来表现和处理偏好以及偏好之间的相互关系,从而可以解决候选服务中相似服务过多的问题;后者用来表现用户的主动从众心理及发现过程,从而可以解决用户在缺少服务先验知识或者相关服务发现经历时的服务发现问题。最后,本文参照提出的面向用户需求的服务发现理论,设计并实现了面向用户需求的服务发现原型系统与应用示范。具体分析了系统实现过程中的需求分析、概要设计以及详细模块设计,并且利用一个实例分析说明了本文理论方法的可行性与有效性。
[Abstract]:Service discovery is an important step in Service-Oriented Architecture.With the continuous development of information technology and the gradual popularization of the network, the number of services and service attributes are characterized by large-scale and diversified.How to find the service that meets the demand from the large scale candidate service set becomes the problem that researchers should pay attention to.In addition, in the process of service discovery, more and more attention has been paid to the personalized needs of users. How to combine the personalized requirements description of users into the process of service discovery, so as to find services that meet the needs of users.Become one of the research points that need attention.In view of the above situation, this paper has carried on the related research to the service discovery method under the large-scale service environment, has proposed the service discovery method which faces the user's demand,It includes ontology-based user requirement description method and service discovery method based on user's potential intention.The main work is as follows: first of all, this paper studies how to describe the personalized needs of users, and describes the concept of user demand preference by constructing user feature information ontology.The user characteristic information description set is constructed by using the obtained user information, and the user requirement description set is formed finally, and the formal description of the user requirement is completed.In order to improve the heterogeneity of service description language and user requirement description in the existing service discovery methods, the efficiency of service discovery can be improved to a certain extent.Secondly, this paper studies how to realize service discovery based on user's demand, and proposes the concept of user's latent intention to express some potential intention of user's service discovery.Potential user intention includes user preference intention and user herd intention. The former is used to express and deal with the relationship between preferences and preferences, thus solving the problem of too many similar services in candidate services.The latter is used to express the user's active herd psychology and discovery process, so as to solve the problem of service discovery when the user lacks prior knowledge of service or related service discovery experience.Finally, this paper designs and implements the prototype system and application demonstration of service discovery based on the theory of service discovery based on user requirements.The requirement analysis, outline design and detailed module design of the system are analyzed in detail, and the feasibility and validity of the theory and method are illustrated by an example.
【学位授予单位】：南京邮电大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TP393.09

【相似文献】