Incorporating end-users' attitudes towards uncertainty into an expert system

Yun Qi Tian, Deborah L. Thurston, James V. Carnahan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Uncertainty is a real and unavoidable part of the design process. Uncertainty in the area of manufacturing cost estimation can have a negative impact on the desirability of design alternatives, and some might be deemed "too risky" for further consideration in spite of potential benefits. Expert designers obtain a sense of what level of risk is acceptable for different types of applications. Expert systems for design thus might include a set of necessary and reasonable assumptions which reflect a particular expert's attitude towards risk and uncertainty. These assumptions may not be applicable for all users. In this paper we present an expert system for design which explicitly addresses the individual user's attitude towards uncertainty. We have developed a spreadsheet userinterface for assessing this attitude through a utility function, and for linking those results to a heuristic rule base. The heuristic rule base contains only technical expertise used to determine a set of feasible alternatives, while the process of evaluating and ranking these feasible alternatives is diiven by the user's individual preferences and risk-taking profile.

Original languageEnglish (US)
Title of host publicationASME 1992 International Computers in Engineering Conference
Subtitle of host publicationVolume 1 - Artificial Intelligence; Expert Systems; CAD/CAM/CAE; Computers in Fluid Mechanics/Thermal Systems
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages9
ISBN (Electronic)9780791809358
StatePublished - 1992
EventASME 1992 International Computers in Engineering Conference and Exposition, CIE 1992 - San Francisco, United States
Duration: Aug 2 1992Aug 6 1992

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
VolumePart F168071-2


ConferenceASME 1992 International Computers in Engineering Conference and Exposition, CIE 1992
CountryUnited States
CitySan Francisco

ASJC Scopus subject areas

  • Mechanical Engineering
  • Computer Graphics and Computer-Aided Design
  • Computer Science Applications
  • Modeling and Simulation

Fingerprint Dive into the research topics of 'Incorporating end-users' attitudes towards uncertainty into an expert system'. Together they form a unique fingerprint.

Cite this