【作者】 镇璐；

【导师】 蒋祖华；

【作者基本信息】 上海交通大学 ， 工业工程， 2008， 博士

【摘要】 该学位论文结合国家重点基础研究发展计划(973)资助项目:知识网格环境下面向产品创新设计的知识供应理论与技术研究,对基于知识网格的知识供应理论与技术进行了研究。本文从知识网格、知识资源组织、知识需求描述、知识供应引擎等方面进行了分析、研究和阐述;并结合产品设计领域,对提出的理论与方法进行了系统开发及应用实证。本文提出了基于对等网络的分布式结构化知识网格三层架构模型、以及知识资源查询路由方法;并对知识网格的核心——知识资源空间模型,结合知识地图进行了扩展;面向知识供应之目标,提出了基于知识网格的知识供应系统层次图、知识网格物理拓扑,以及在其基础上如何支持企业组织内部(或之间)的知识供应。本文提出了基于知识服务的异构知识资源统一描述、封装方法,并定义了知识服务本体;与此同时,提出了语义超图模型及其数据结构、推理机制,用于描述知识服务之间的语义关联,实现知识供应源头异构知识资源的有效组织管理。本文提出了基于工作流的知识需求描述以及智能获取方法,定义了基于工作流中成员-角色-任务的知识需求描述模型,并提出一套新的方法,主要是根据用户的兴趣、知识背景、工作的任务的需求、角色对能力的要求、以往阅读查询历史、社区交流记录、以及工作安排等信息,去自动挖掘出协同团队中各个用户的不同知识需求。本文提出了知识网格环境下集中式、分布式知识供应引擎模型,针对集中式,具体提出了基于用户需求的知识供应引擎(普通应用)、面向创新的知识供应引擎(高级应用);并且结合分布式结构化知识网格三层架构模型,提出了适应该环境的分布式知识供应引擎实现策略。本文将前面提出的知识供应理论与技术应用到产品设计领域中。具体研究知识供应平台的系统架构和应用模块,研究如何通过该平台对产品开发中知识资源进行组织和管理,用具体实例展示产品设计活动中基于需求的知识供应过程、以及面向产品创新设计的知识供应高级应用。最后,通过具体实例展示了面向产品开发的分布式环境下知识供应引擎工作过程和场景。最后,对全文主要贡献进行了总结,并阐述了进一步研究计划。更多还原

【Abstract】 With the support from the National Basic Research Program of China / 973 Project (Innovative product development oriented knowledge supply based on knowledge grid), this doctoral dissertation focus on the knowledge supply in the knowledge grid environment. It introduces knowledge grid, organization of knowledge resources, knowledge demand modeling, and knowledge supply engine. In addition, the proposed theory is implemented in the domain of product development, and its case study is also illustrated in this dissertation.The dissertation proposed structured & distributed three layer model based on peer to peer model, and the query routing algorithm. The knowledge space model, the core of knowledge grid, is also extended by employing the knowledge map toolkit. With the target of knowledge supply, the research of knowledge grid brought out the architecture of knowledge supply based on knowledge grid, the physical topology of knowledge grid, and the methodology for supporting the knowledge supply among inner or inter organizations.The dissertation proposed the knowledge service based uniform knowledge expression and encapsulation for heterogeneous knowledge resources. An original model of Hy-SN (hyper graph based semantic network) is proposed for describing the semantic relationships among knowledge services. The data structure and reasoning mechanism of Hy-SN are also proposed for managing knowledge resources efficiently.The dissertation proposed the workflow centric knowledge demand modeling and intelligent mining. It mainly consists of the static model of knowledge demand based on member-role-task reference model, and a set of content-based or collaborative filtering algorithms for mining users’knowledge demand automatically and intelligently, which is mainly according the users’interest, education background, knowledge query history, and communication records among communities.This dissertation proposed centralized and distributed knowledge supply engine model. As to the former sort (centralized), the users demand based knowledge supply model is brought out as routine application, and innovation oriented knowledge supply model for advanced application. Corresponding with the structured & distributed three layer knowledge grid model, a distributed knowledge supply engine model is also introduced in detail.The proposed theories are implemented in the domain of product development. The system architecture of knowledge supply platform is introduced in last chapter. By using the prototype system, some knowledge resources are managed and some cases for knowledge supply in the product development process are also illustrated. As to the advanced knowledge supply application, a case for innovative knowledge supply is described in detail. The case study for distributed knowledge supply engine is also mentioned in the last chapter.At last, some major contributions of this dissertation are summarized, and some advices for further research are proposed.更多还原