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- W4288774562 abstract "This chapter illustrates how to integrate a flow of information in a decision-making process, with a focus on dynamic systems and sequential actions. Long-term infrastructure asset management can be formulated as a problem of decision-making under uncertainty on the components' condition and evolution. Maintenance and repair actions are taken with the goal of optimizing an appropriate metric of utility or loss. Measures of structural condition are collected by visual inspections and sensors, in the process of Structural Health Monitoring (SHM). These measures reduce the uncertainty and, if integrated in the control process, allow for improving the management quality. Methods for optimizing this quality are related to the inference of the current condition of the components, the prediction of their evolution depending on maintenance actions, and the assessment of the overall expected long-term management cost. Hidden Markov Models (HMMs) provide a consistent framework for processing the available information via Bayesian inference and predicting the uncertain evolution of dynamic systems. Sequential decision-making can be optimized by Markov Decision Processes (MDPs), when the state is perfectly observable, or by Partially Observable MDPs (POMDPs), when measures are partial or are affected by noise. In this chapter, we present HMMs, MDPs, and POMDPs, and show how the Value of Information (VoI) can be assessed in these contexts, both for current information and for flow of information. By computing the VoI, we can quantify the impact of SHM in infrastructure asset management, depending on the features of the monitoring campaign and of the management process." @default.
- W4288774562 created "2022-07-30" @default.
- W4288774562 creator A5082501969 @default.
- W4288774562 date "2022-01-01" @default.
- W4288774562 modified "2023-09-23" @default.
- W4288774562 title "Decision-making in SHM systems for asset management" @default.
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- W4288774562 doi "https://doi.org/10.1016/b978-0-08-102696-0.06001-2" @default.
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