Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"Aleatory Uncertainty"”.
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Who Should I Trust? Uncertainty and Risk for Knowledge Transfer from Multiple Sources in Reinforcement Learning Domains
… remain largely incognizant to risk and uncertainty during transfer. In this thesis, we identify two sources of risk that must be addressed in order to make transfer learning from multiple knowledge sources more reliable and autonomous: epistemic uncertainty arises due to a lack of …
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Advancing Efficiency and Safety in Autonomous Sequential Decision Making
… environments, addressing inaccuracies under uncertainty, and implementing effective risk management strategies. It focuses on boosting RL data efficiency through simultaneous emphasis on epistemic uncertainty and knowledge transfer, and on mitigating risks associated with agent actions …
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Decision making under epistemic uncertainty : an application to seismic design
The problem of accounting for epistemic uncertainty in risk management decisions is conceptually straightforward, but is riddled with practical difficulties. Simple approximations are often used whereby future variations in epistemic uncertainty are ignored or worst-case scenarios are postulated. …
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Performance-based earthquake engineering with the first-order reliability method
… uncertainties arising from inherent randomness (“aleatory uncertainty”) and due to the lack of knowledge (“epistemic uncertainty”) are identified. A framework for the separation of these uncertainties is proposed. Following this, the applicability of FORM to the linear and nonlinear finite-element …
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Uncertainty Assessment in High-Risk Environments Using Probability, Evidence Theory and Expert Judgment Elicitation
<p>The level of uncertainty in advanced system design is assessed by comparing the results of expert judgment elicitation to probability and evidence theory. This research shows how one type of monotone measure, namely Dempster-Shafer Theory of Evidence can expand the framework of uncertainty to …
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A Probabilistic Decision Support System for a Performance-Based Design of Infrastructures
… main types of uncertainties may exist: 1) the aleatory uncertainty associated with the nature of the built environment (i.e., the economic, social, and environmental impacts of infrastructures must be described as probabilistic); and 2) the epistemic uncertainty associated with the lack of …
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Coastal floods in view of sea level rise
… examinations are carried out to quantify the aleatory uncertainty involved in these projections. In this regard, a decrease of (relative) uncertainty with rising mean sea levels is detected. Beyond that, we demonstrate how potential adaptation measures can be assessed in terms of a …