项目名称: 多层QoS约束支持的遥感信息服务个性化搜索方法
项目编号: No.41201388
项目类型: 青年科学基金项目
立项/批准年度: 2013
项目学科: 地理学
项目作者: 蒋玲
作者单位: 电子科技大学
项目金额: 25万元
中文摘要: 以服务替代传统遥感信息产品实现遥感信息的共享与应用已成为当今信息时代的一大趋势。网络环境下遥感应用任务需求的多样化、复杂化、并发性和实时性等特点导致难以直接使用现有的商业搜索引擎在线获取服务。如何快速、准确、高效地发现满足用户个性化需求的服务成为制约遥感信息服务进一步发展的瓶颈。本项目引入遥感信息本体,在综合考虑遥感信息服务在数据来源、处理功能以及所面向的用户群体和任务需求等方面的特点基础上,研究多源遥感信息服务发现机理,综合运用多维语义特征聚类法、多层QoS约束法和用户相关反馈法三种方法对现有的Web服务发现模型进行扩展,建立一种多层QoS约束的遥感信息服务发现模型;在此基础上,提出一种基于语义聚类的多层QoS约束支持的遥感信息服务个性化搜索优化方法,为面向用户个性化任务需求的遥感信息服务快速、准确、高效的搜索提供一种更为有效的途径,为大规模遥感信息云计算和云服务提供重要支撑。
中文关键词: 服务发现;地理信息搜索;数据共享;服务质量评价;服务分类
英文摘要: It has been a trend in today's information age that remote sensing information services instead of the remote sensing information products to realize sharing and application. Remote sensing information applications in the network environment have the characteristics of diversity,complexity,concurrency and real-time.So it is very difficult to search remote sensing information services online by use of mature commerce searching engine directly.How to quickly,accurately and efficiently find the remote sensing information services that meet users' individual needs have become a bottle-neck that restricts the further development of remote sensing information services.For the above problems,the application introduces remote sensing information ontology to the searching of remote sensing data and services and fully considers the characteristics of remote sensing information services in the data sources,the functions of remote sensing information processing,the users and the tasks oriented. Then the application does some researches for multi-soure remote sensing information service discovery mechanism, and expands the existing Web services discovery models by the three methods of multi-dimensional semantic feature clustering method, multi-layer QoS constraint method and user's feedback method to establish an efficient,
英文关键词: service discovery;search for geographical information;data sharing;service quality evaluation;service classification