A Representation of Uncertainty to Aid Insight into Decision Models

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Citation: Holly Brügge Jimison. (1988) A Representation of Uncertainty to Aid Insight into Decision Models. In KSL-89-62, 1988.

Publication techreport ( Edit )
type Technical Report
bibtype techreport
Bibtex basics
author Holly Brügge Jimison
title A Representation of Uncertainty to Aid Insight into Decision Models
number KSL-89-62
institution Knowledge Systems, AI Laboratory
year 1988
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abstract Many real world models can be characterized as WEAK, meaning that there is significant uncertainty in both the data input and inferences. This lack of determinism makes it especially difficult for users of computer decision aids to understand and have confidence in the models. This paper presents a representation for uncertainty and utilities that serves as a framework for graphical summary and computer-generated explanation of decision models. The implementation described is a computer decision aid designed to enhance the clinician-patient consultation process for patients with suspected angina (chest pain due to lack of blood flow to the heart muscle). The generic angina model is represented as a Bayesian decision network, where the probabilities and utilities are treated as random variables with probability distributions on their range of possible values. The initial distributions represent information on all patients with anginal symptoms, and the approach allows for rapid customization to more patient-specific distributions. The framework provides a metric for judging the importance of each variable in the model dynamically.

KSL Technical Report ID: KSL-89-62
Facts about A Representation of Uncertainty to Aid Insight into Decision ModelsRDF feed
Abstract Many real world models can be characterize … Many real world models can be characterized as WEAK, meaning that there is significant uncertainty in both the data input and inferences. This lack of determinism makes it especially difficult for users of computer decision aids to understand and have confidence in the models. This paper presents a representation for uncertainty and utilities that serves as a framework for graphical summary and computer-generated explanation of decision models. The implementation described is a computer decision aid designed to enhance the clinician-patient consultation process for patients with suspected angina (chest pain due to lack of blood flow to the heart muscle). The generic angina model is represented as a Bayesian decision network, where the probabilities and utilities are treated as random variables with probability distributions on their range of possible values. The initial distributions represent information on all patients with anginal symptoms, and the approach allows for rapid customization to more patient-specific distributions. The framework provides a metric for judging the importance of each variable in the model dynamically. of each variable in the model dynamically.
Author Holly Brügge Jimison  +
Bibtype techreport  +
Has author Holly Brügge Jimison  +
Has identifier KSL-89-62  +
Has publishing details 1988  +
Has title A Representation of Uncertainty to Aid Insight into Decision Models  +
Has where published KSL-89-62  +
Has year 1988  +
Institution Knowledge Systems, AI Laboratory  +
Ksl tr id KSL-89-62  +
Number KSL-89-62  +
Process note YES  +
Title A Representation of Uncertainty to Aid Insight into Decision Models  +
Year 1988  +
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