摘要:

Abstract:Two types of expert system which involve statistical expertise are statistical consulting programs and programs which find patterns in databases. Consulting programs can now be built quickly using programming tools. Most expert systems include mechanisms for reasoning under uncertainty. Methods under investigation include fuzzy logic, Dempster‐Shafer theory, Bayesian analysis and various ad hoc methods. Learning systems use statistics to infer inductive rules, and statistical reasoning can also be used to evaluate the performance of expert systems. The use of a prototype statistical expert system, XSAMPLE, is demonstrated, as a system to handle a consulting session with a statistically moderately advanced use

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00063.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Abstract:To overcome the inefficiency of domain independent tools, a domain‐specific knowledge‐based shell for parallel machine scheduling problems, PAMS (PArallel Machine Scheduling System), is proposed. PAMS has the following features; mixed knowledge representation, two‐stage status‐driven control strategy, conflict resolution using domain theory, domain‐specific syntax and primitive operators, interface with database, domain‐specific input/output interface, interactive scheduling capability, built‐in heuristic knowledge, multiple levels of schedule, and expansibility of the domain. A prototype of PAMS, PAMS‐1, is developed using C‐language on a supermicrocomputer, and the performance of PAMS‐1 is evaluated. The results show that the PAMS‐1 performs very well from

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00064.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Abstract:Knowledge acquisition has long been considered to be the major constraint in the development of expert systems. Conventional wisdom also maintains that the major problem encountered in knowledge acquisition is in identifying the varying structures and characteristics of domain knowledge and matching these to suitable acquisition techniques. With the aid of the first substantial systematic analysis of a sample of expert systems applications developed in the real world, the authors describe what is actually going on in terms of knowledge acquisition. In the light of the evidence, it is argued that a reappraisal of the conventional approach to knowledge acquisition is necessary.

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00065.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

摘要:

Abstract:A system for the generation of naval flying programmes is described. The task is typical of some resource allocation problems, and comprises both the allocation of airborne resources to naval activities whilst taking into account a number of constraints, and the re‐allocation of these resources when circumstances change whilst retaining as much of the original plan as possible. Techniques for constraint‐based reasoning and assumption‐based reasoning are combined to solve the task. An algorithm is described, based around an Assumption‐Based Truth Maintenance System (ATMS), that is able to generate an initial allocation, determine the knock‐on effects of changing requirements or resources, to retain those parts of the plan that were unaffected, and to re‐allocate those parts that were affected. An interactive graphical interface has been designed that allows the user and the system to cooperate in the creation of flying programmes that meet the constraints and fit the situat

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00066.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00067.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00068.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY

ISSN:0266-4720    

DOI:10.1111/j.1468-0394.1988.tb00069.x

出版商:Blackwell Publishing Ltd    

年代:1988

数据来源: WILEY