摘要:

Abstract:There has been a growing desire for methodological support for the development of knowledge‐based systems, and the KADS methodology is probably the most widely known methodology in Europe. However, KADS has been criticised for the overhead which it places on small and medium‐sized KBS projects where the risks of KBS development becoming unmanageable are relatively low. This paper describes the use of ‘pragmatic KADS’, an attempt to extract the most useful elements from the KADS methodology, in the development of the COURSE SELECTOR KBS, which assists undergraduate students to choose courses which comply with University regulations and timetabling restrictions. This KBS was built in six man‐weeks. The paper describes the three major phases of a KBS project, giving a brief outline of the KADS approach to each of these stages, and then discusses the techniques which were actually used for COURSE SELECTOR. It concludes with a recommendation of techniques for future small KBS

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00399.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Abstract:This paper describes a project that is studying an expert system (ES) development method tailored to meet the requirements of small and medium‐sized enterprises (SMEs). It is posited that many such organisations cannot use ES technology because of its high entry price and because the available tools and methods were developed for and by large organisations. Within this context our development method encompasses the entire life cycle of an ES from initial conception to implementation through to maintenance and updating. The central premise is that the method should be ‘client‐centred’, emphasising what the client can see, rather than being ‘technology‐centred’, emphasising how the knowledge engineers work. Discussion includes how this methodology addresses many criticisms of current ES development methods, including rapid prototy

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00400.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Abstract:Developing an expert system is a considerable investment in time and money and yet very little attention has focused on keeping expert systems in regular beneficial use. The problems of maintaining expert systems and the lack of research that this area has attracted are major contributing factors to the continued lack of acceptance of these systems. This paper discusses the maintenance of expert systems within the context of the Client Centred Approach. Although there are many similarities between maintaining expert systems and conventional systems maintenance there is one vital difference—knowledge changes. Consequently an expert system requires regular evolutionary maintenance if its performance is not to be impaired.This paper is intended to promote discussion of maintenance issues within the community. We review some principles and techniques that can assist the maintenance of expert systems and describe some formative work towards a maintenance methodology derived from a case study of maintaining a commercially‐available expert sys

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00401.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Abstract:Knowledge‐based systems have previously been restricted to capturing the knowledge of living human experts and, in the medical domain, to delaying the onset of death in living patients. The system described in this paper overcomes both these restrictions by providing knowledge‐based support for the reanimation of dead patients, who may also be domain experts.There is a well‐established literature on raising the dead to life and an extensive literature on counselling patients who have undergone traumatic experiences. Examination of this literature suggests that the actual reanimation process is a relatively simple process, so the system concentrates on the counselling and care aspects. Results so far are encouraging.The next version of the system is intended to include a natural language interface to handle the English‐Aramaic interpretation which is expected to be necessary for the actual reanimation process: this version will require further funding and clearance from the appropriate ethical committees. Both of these are expected to present few difficulties.The success of this system demonstrates that application of proven KBS techniques to a domain previously considered intractable can produce surprisingly fast and impressive results; to date, over 90% of system modules have been successfully tested. It is likely that this success could be replicated in other areas and this is currently the subject of further study by the authors (Rugg&Phibes

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00402.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00403.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00404.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

摘要:

Book reviewed in this article:Practical Knowledge Engineering: Creating Successful Commercial Expert Systems, Richard V. Kelly Jr.

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00405.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1992.tb00406.x

出版商:Blackwell Publishing Ltd    

年代:1992

数据来源: WILEY