基于案例推理的ISP知识重用方法

针对企业信息化中信息系统规划(ISP)在较大程度上依赖先前规划经验和知识的特点,为有效支持ISP知识重用和管理创新,将案例推理技术应用于ISP知识重用的全过程,提出基于案例推理的ISP知识重用方法(HRM KGANNA),研究应用框架、案例表示、案例检索算法与重用等关键技术。通过组织案例库进行ISP知识检索实验,结果表明HRM KGANNA法具有良好的准确性和较高的效率。     

有效支持设计知识检索和重用的扩展的设计理性表示

设计理性是对产品设计过程的解释和记录,是一类重要的设计知识,其内容和表示对于有效支持设计知识的检索和重用起着关键作用.针对设计知识检索和重用的需要,提出一种基于本体的扩展的设计理性表示模型.通过分析需要检索和重用的设计知识,给出以IBIS表示为基础,结合FBS模型、产品层次模型和产品需求的设计理性扩展表示;并据此构建设计理性本体以及相关的语义规则,以有效地支持基于语义的设计知识的检索和重用.实验结果表明,文中模型具有良好的表达能力和可用性.     

基于知识重用的大型水轮机可拓方案设计

研究了知识表示与重用技术,提出一种基于可拓学原理和实例推理的知识重用方法.该方法用物元模型以定量与定性相结合的方式对实例推理中的实例和问题进行统一描述,采用基于距的检索算法获得符合设计制造要求的最佳匹配实例,应用可拓变换对检索实例进行适应性修改,以使新实例符合问题的需要.最后以大型水轮机选型方案设计为例进行了验证.     

大规模定制环境下的决策案例库系统

针对大规模定制决策的特点,为实现决策案例的重用,提出了一种面向大规模定制决策问题的案例库系统,设计了基于框架结构的案例知识表示模型,介绍了基于模糊加权的案例相似度计算和匹配算法,该算法解决了大规模定制决策问题的结构化表达、检索匹配和重用问题,开发了案例库的原型系统以支持案例管理、推理和基于案例的规则发现。     

融合CBR和本体的决策支持系统框架及应用

分析了将本体与CBR方法结合开发智能决策支持系统的优点,设计了基于该方案的决策支持系统的总体框架,着重介绍了基于本体的案例组织和表示方法以及引入本体后案例检索过程中的相似度计算方法,基于该方案,设计和开发了电子政务项目审批决策支持系统。应用结果表明,利用本体对案例包含的知识进行提取和表示,再利用这些知识对案例进行组织和检索,有效地提高了案例检索的查准率和查全率。     

基于案例和描述逻辑的海上援救规划方法

实现知识共享和案例检索是开发基于案例的智能决策支持系统面临的首要问题。针对海上援救指挥决策,采用Web本体语言OWL表示危机态势信息和海上援救领域知识,提出一种基于案例推理和描述逻辑推理的援救规划业务流程。以援救搁浅触礁舰船为例,对海损状况及其援救方法等信息进行了描述和推理。实验结果表明,根据具有语义的领域知识使用描述逻辑推理机对危机态势信息进行分类,能事先限定所要搜索的案例库和选择合理的援救方法,并提高案例检索效率和援救规划的实用性。     

一种基于本体和CBR的电子政务项目审批决策支持系统

分析了将本体与CBR方法结合开发电子政务项目审批决策支持系统的优点,给出了该系统的总体框架和决策支持流程,着重介绍了基于本体的电子政务项目案例的组织和表示方法以及引入本体后案例检索过程中的相似度计算方法。实验结果表明,利用本体对项目案例包含的知识进行提取和表示,再利用这些知识对案例进行组织和检索,有效地提高了案例检索的查准率和查全率。     

基于知识图谱和BERT的食品案例检索方法

传统的案例检索方法不能反映案例之间的内在联系,导致检索结果不够准确和全面.根据食品安全案例的特点,提出一种运用知识图谱与BERT模型相结合的案例检索方法,以提高检索效果.综合考虑食品安全案例知识图谱的关系结构和实体属性特征进行案例检索.以三元组的形式表示食品安全案例并构建知识图谱,一方面,用Jaccard相似系数计算案例的关系相似度;另一方面,采用BERT模型将属性特征向量化后,计算案例属性相似度.对两部分加权求和得到案例总相似度,并进行案例检索.多组实验验证了该方法的有效性,且案例检索结果更加准确和全面.     

基于本体的机械产品知识仓库研究与应用

为解决产品开发全生命周期中知识管理与知识重用问题,提出了基于本体的机械产品知识仓库系统构架。从语法、属性、结构、实例四个方面进行相似性的计算,实现将源本体的实例映射到目标本体的过程。采用OWL本体表示语言对产品知识进行本体建模。并对基于本体的案例推理进行了深入的研究。最后将研究成果应用于制造业知识管理系统的机械产品知识仓库子系统中。     

面向机械产品概念设计的知识库设计研究

针对机械产品概念设计中设计知识功能语义定义模糊和隐形知识重用率低的问题, 研究了基于领域本体表示的知识库设计方法,支持设计知识的自助发布管理和语义信息检索等 功能。提出设计知识表示的本体模式和建模方法,建立领域本体;从概念设计方案需求粒度、 功能目标及企业知识自管理等方面考虑,建立多维设计知识分类体系;设计JSON 文件到OWL 文件的映射规则,实现设计知识的发布、维护、存储和检索。最终实现面向机械产品概念设计 的知识管理,为企业设计人员提供知识共享和重用,支持产品概念设计的方案创新。     

一种MAS构件知识复用动态演化模型

为提高企业的知识利用效率,增强企业创新能力,针对企业现有知识和系统,提出将企业知识管理的业务逻辑与知识处理事务分开,建立了基于多智能体和构件知识的知识复用模型,设计了知识管理业务逻辑的规则模型和智能体的活动行为模型,讨论了基于多智能体的规则协调模式,有效地支持知识的动态复用和知识使用过程的动态重组,增强知识管理系统的分布式处理能力和规模可扩展能力.在分布式构件库系统中,智能体通过协作联合完成任务要求.每个智能体拥有自己的知识库,并且具备学习能力,能够更新其知识库以保持执行结果的有效性.     

Dependence directed reasoning and learning in systems maintenancesupport

The maintenance of large information systems involves continuous modifications in response to evolving business conditions or changing user requirements. Based on evidence from a case study, it is shown that the system maintenance activity would benefit greatly if the process knowledge reflecting the teleology of a design could be captured and used in order to reason about he consequences of changing conditions or requirements, A formalism called REMAP (representation and maintenance of process knowledge) that accumulates design process knowledge to manage systems evolution is described. To accomplish this, REMAP acquires and maintains dependencies among the design decisions made during a prototyping process, and is able to learn general domain-specific design rules on which such dependencies are based. This knowledge cannot only be applied to prototype refinement and systems maintenance, but can also support the reuse of existing design or software fragments to construct similar ones using analogical reasoning techniques     

A study on the collaborative management method of product design cycle knowledge

Because of the ever-increasing market competition and rapidly changing of customers’ requirements, the innovation quality and design efficiency of knowledge-intensive product has become the key factors in business success. The traditional knowledge management method which is based on design reuse and the single categories of design knowledge cannot satisfy these demands any more. Therefore, in order to effectively support the innovative design process of enterprises, a design knowledge collaborative management method based on multi-knowledge migration is proposed. According to the characteristics and functions during the product design process, the design knowledge is divided into three categories, design principle knowledge, design domain knowledge and design object knowledge. By extracting the operation attributes, relation attributes and physical attributes of the design knowledge, a unified knowledge representation model is established for different design participants. The ontology concept and knowledge matrix are used to establish the association between various categories of design knowledge. Multifarious knowledge search methods include keyword, function, principle and natural semantics are proposed for different design participants in different design stages. They can not only realize the knowledge reuse in the same domain but also support the cross-domain knowledge migration among different domain. Finally, based on the system analysis modelling, a design knowledge collaborative platform is established for the design process of mechanical products. A case study is also presented to illustrate the implementation of the platform.     

Knowledge-based system for collaborative process specification

This paper presents an ontology-based approach for the design of a collaborative business process model (CBP). This CBP is considered as a specification of needs in order to build a collaboration information system (CIS) for a network of organizations. The study is a part of a model-driven engineering approach of the CIS in a specific enterprise interoperability framework that will be summarised. An adaptation of the Business Process Modelling Notation (BPMN) is used to represent the CBP model. We develop a knowledge-based system (KbS) which is composed of three main parts: knowledge gathering, knowledge representation and reasoning, and collaborative business process modelling. The first part starts from a high abstraction level where knowledge from business partners is captured. A collaboration ontology is defined in order to provide a structure to store and use the knowledge captured. In parallel, we try to reuse generic existing knowledge about business processes from the MIT Process Handbook repository. This results in a collaboration process ontology that is also described. A set of rules is defined in order to extract knowledge about fragments of the CBP model from the two previous ontologies. These fragments are finally assembled in the third part of the KbS. A prototype of the KbS has been developed in order to implement and support this approach. The prototype is a computer-aided design tool of the CBP. In this paper, we will present the theoretical aspects of each part of this KbS as well as the tools that we developed and used in order to support its functionalities.     

A collaborative system for capturing and reusing in-context design knowledge with an integrated representation model

Current research on design knowledge capture and reuse has predominantly focused on either the codification view of knowledge or the personalisation view of knowledge, resulting in a failure to address designers’ knowledge needs caused by a lack of context of information and insufficient computational support. Precisely motivated by this gap, this work aims to address the integration of these two views into a complete, contextual and trustworthy knowledge management scheme enabled by the emerging collaborative technologies. Specifically, a knowledge model is developed to represent an integrated knowledge space, which can combine geometric model, knowledge-based analysis codes and problem-solving strategies and processes. On this basis, a smart collaborative system is also designed and developed to streamline the design process as well as to facilitate knowledge capture, retrieval and reuse as users with different roles are working on various tasks within this process. An engineering case study is undertaken to demonstrate the idea of collaborative knowledge creation and sharing and evaluate the effectiveness of the knowledge representation model and the collaborative technologies employed. As evidenced in the development and evaluation, the methods proposed are effective for capturing an integrated knowledge space and the collaborative knowledge management system not only facilitates problem-solving using knowledge-based analysis but also supplies in-context tacit knowledge captured from the communications between users throughout the design process.     

基于OWL的电厂设备故障特征的知识表示

为了对电力行业复杂的故障信息进行有效的知识管理,本文将本体论方法引入到设备故障信息的知识表示中。利用OWL本体语言的知识表示特性,介绍了基于OWL的电厂设备故障特征知识表示的过程,为特定领域知识的公共一致表示提供了新的思路,本研究结果不仅可以促进电力行业知识的共享和重用,还方便了电力行业内部以及企业间知识管理和信息交换。     

基于案例推理的谈判支持系统的研究

通过对谈判案例的表达、检索、复用、评价、适配和学习的研究,基于案例推理的谈判支持系统解决了谈判者谈判相关知识缺乏的问题;在谈判案例表达方法中提出了属性分类方法;采用改进的最近相邻法进行谈判案例适配,以获得更相近的谈判历史案例;通过对基于案例推理的谈判机制分析,构建了基于案例推理谈判支持系统的体系结构,并详细设计了谈判系统的功能.最后,通过一个采购谈判方案验证了基于案例推理谈判支持系统的实用性.     

一个面向软件过程的知识挖掘与管理系统

软件过程的知识密集性特征要求组织人员的密切协作、交流，并能够有效地重用组织的实践经验。数据挖掘技术能够从大规模数据中发现有意义的知识，能够为知识管理提供有益的支持，从而得到更好的知识共享和重用效果。在对软件过程进行分析的基础上，提出了协同知识管理模型。介绍了一个集成的面向软件过程的知识挖掘与管理系统iKnow。对iKnow的知识表示、知识挖掘、知识服务和个性化知识检索进行了论述。系统使软件组织的实践经验成为可视、可控和可重用的知识资源。