摘要:

AbstractThis paper gives a comprehensive explanation of the Istar knowledge representation software tool. Not only does it describe the features and facilities found in Istar, but it discusses why they are as they are.Istar is one of a new generation of knowledge representation tools, aimed at ill‐structured domains of knowledge. While it can be used in traditional KBS projects, in which pieces of knowledge from a domain expert are assembled to form a working knowledge base, it is designed for situations in which there is a large element of creative design: knowledge refinement and generation resulting from the knowledge representation process.The knowledge representation ‘language’ is purely graphical; the knowledge engineer ‘draws’ knowledge on an easel as a box and arrows diagram. Behind this diagram is the knowledge base itself, in the form of integrated inference nets, Bayesian nets and semantic nets. This paper discusses the reasons for these design choices and, briefly, some of the issues faced in development

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00124.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

AbstractThis paper describes a computer based approach to comparing data obtained for Knowledge Based Systems via established but very varied knowledge elicitation (KE) techniques. It describes not only the detailed comparison of different KE methods (in this case ‘scaling’ and ‘non‐scaling’) but also investigates the use of ‘demonstration’ or ‘evaluation’ systems, as a variation on the more established rapid prototyping approaches to the elicitation and evaluation of knowledge for KBS construction, in this case by focusing upon the quality and relevance of the elicited knowledge from the perspective of the expert himself. Preliminary results from the study reported here suggest that non‐scaling methods produce a greater amount of raw data than scaling methods, and that this data is less likely to require correction or modification for inclusion within a Knowledge Based System. However, the results also indicate that non‐scaling derived data is more likely than scaling derived data data to

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00125.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

Abstract:This paper presents a model for increasing security within a security domain through the use of localised security services and continuous monitoring. The model divides security services between three logical structures Local Security Units, Local Security Servers and Domain Management Centres. The localisation of security allows the functional divisions within organisations to implement modified security dependent upon their individual needs.

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00126.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00127.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

摘要:

Open Distributed SystemsJon Crowcrofi

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00128.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1996.tb00129.x

出版商:Blackwell Publishing Ltd    

年代:1996

数据来源: WILEY