KSL-88-40 + redirect page
Knowledge Acquisition for Probabilistic Expert Systems + Has identifier
Knowledge Acquisition for Probabilistic Expert Systems + Ksl tr id
Knowledge Acquisition for Probabilistic Expert Systems + Number
| Knowledge Acquisition for Probabilistic Expert Systems |
Bibtype
techreport
Has publishing details
1988
Has title
Knowledge Acquisition for Probabilistic Expert Systems
Has where published
KSL-88-40
Has year
1988
Title
Knowledge Acquisition for Probabilistic Expert Systems
Year
1988
Abstract
Recent interest in probability-based exper … Recent interest in probability-based expert systems has focused on the potential these systems have for being coherent with the beliefs of the modeled expert or of the user and consistent given any set of evidence. We have used the probabilistic formalism in creating the REFEREE system, a belief-network-based expert system designed to aid readers in determining the credibility of a randomized clinical trial. In this paper, we explore the effect the formalism had on the process of knowledge acquisition based on this experience. Although the system is still in development, we can report several of those effects. Specifically, the need to make operational definitions of concepts deemed important to the expert forced us to organize a domain that was formulated initially for a rule-based system. Categorizing probability distributions as being logical, probabilistic, or prototypical helped us to decrease the number of probability assessments. On the other hand, the lack of an intermediate prototype may have prolonged development, and computational limitations forced occasional compromises. The reality of building expert systems in a probabilistic paradigm may not be as hard as some critics have predicted. be as hard as some critics have predicted.
Author
Harold P. Lehmann +
Has author
Harold P. Lehmann +
Has identifier
Knowledge Acquisition for Probabilistic Expert Systems +
Institution
Knowledge Systems, AI Laboratory +
Ksl tr id
Knowledge Acquisition for Probabilistic Expert Systems +
Number
Knowledge Acquisition for Probabilistic Expert Systems +
Process note
YES +
Categories KSL Technical Report +, Publication +, Technical Report +
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