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通过继承增强语义Web服务

Enhancing Semantic Web Services with Inheritance
课程网址: http://videolectures.net/iswc08_feng_eswsi/  
主讲教师: Yuzhang Feng
开课单位: 新加坡国立大学
开课时间: 2008-11-24
课程语种: 英语
中文简介:
当前提出的语义Web服务技术允许创建基于本体的Web服务的语义注释,使得软件代理能够以高度自动化发现,调用,组合和监视这些服务。 OWL服务(OWL S)本体是OWL语言的上层本体,为语义描述Web服务提供了必要的词汇表​​。目前OWL S服务只能独立开发;如果一个服务不可用,那么找到合适的替代方案将需要昂贵且困难的全局搜索/匹配。希望有一个新的OWL S结构,它可以系统地支持替代跟踪以及服务的增量开发和重用。将继承关系(IR)引入OWL S是一种自然的解决方案。但是,OWL S以及目前讨论的大多数语义Web服务的形式主义,如WSMO或SAWSDL,尚未定义一种在服务之间建立继承关系的具体和自包含机制,我们认为这对于自动注释和发现Web服务以及人类服务组织到类似分类的结构中。在本文中,我们扩展OWL S,使其能够定义和维护服务之间的继承关系。通过定义附加的“继承概要”,可以陈述和推理继承关系。允许两种类型的IR允许服务开发者选择是否尊重服务之间的“合同”。建议的继承框架也已实施,原型也将进行简要评估。
课程简介: Currently proposed Semantic Web Services technologies allow the creation of ontology-based semantic annotations of Web services so that software agents are able to discover, invoke, compose and monitor these services with a high degree of automation. The OWL Services (OWL-S) ontology is an upper ontology in OWL language, providing essential vocabularies to semantically describe Web services. Currently OWL-S services can only be developed independently; if one service is unavailable then finding a suitable alternative would require an expensive and difficult global search/match. It is desirable to have a new OWL-S construct that can systematically support substitution tracing as well as incremental development and reuse of services. Introducing inheritance relationship (IR) into OWL-S is a natural solution. However, OWL-S, as well as most of the other currently discussed formalisms for Semantic Web Services such as WSMO or SAWSDL, has yet to define a concrete and self-contained mechanism of establishing inheritance relationships among services, which we believe is very important for the automated annotation and discovery of Web services as well as human organization of services into a taxonomy-like structure. In this paper, we extend OWL-S with the ability to define and maintain inheritance relationships between services. Through the definition of an additional “inheritance profile”, inheritance relationships can be stated and reasoned about. Two types of IRs are allowed to grant service developers the choice to respect the “contract” between services or not. The proposed inheritance framework has also been implemented and the prototype will be briefly evaluated as well.
关 键 词: 服务技术; 语义注释; 软件代理
课程来源: 视频讲座网
最后编审: 2019-04-28:cwx
阅读次数: 34