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Fuzzy constraint levels for probabilistic performance measures

conference contribution
posted on 06.12.2017, 00:00 by Kevin TickleKevin Tickle
Performance risk measures are often used in environmental decision making applications as a means to enhance the understanding of a system subject to stochastic inputs and demands. These risk measures are usually probabilistic random variables describing some performance measure of a system. These risk measures are incorporated into the decision making (and optimisation) by specifying required levels of attainment, for example system reliability of .95 or 95%. Typically the specified constraint level is a crisp number even though there is imprecision or uncertainty about what level should be specified and the relative importance of the metrics themselves. Allowing a linguistic rating of the importance and incorporating fuzzy constraints better encapsulates the imprecision associated with the decision making. This paper examines the effect of imposing a fuzzy specification on a probabilistic random variable in an optimisation problem. The example chosen is a Markov decision process with probabilistic constraints. The practical example follows from formulating the operation of a reservoir as a MDP with constraints on reliability, resilience and vulnerability. The specified levels of performance are then given an imprecise specification i.e. a fuzzy representation.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Parent Title

Hydroinformatics: Proceedings of the 6th International Conference.

Start Page

1522

End Page

1530

Number of Pages

9

Start Date

01/01/2004

ISBN-10

9812387870

Location

Singapore

Publisher

World Scientific Publishing Co Pte Ltd

Place of Publication

Singapore

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Faculty of Informatics and Communication;

Era Eligible

Yes

Name of Conference

International Conference on Hydroinformatics

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