System-of-Systems Engineering - Liophant Simulation
System-of-Systems Engineering - Liophant Simulation
System-of-Systems Engineering - Liophant Simulation
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Surrogate ModelsAre surrogate models the silver bullet? No,because:• They contain statistical error that maybe significant• Their applicability is limited by thedomain range <strong>of</strong> the DoE• The adequacy <strong>of</strong> a given surrogatemodel type depends on the nature <strong>of</strong>behavior it is meant to capture• They carry implicit assumptions thatcan be overlookedWhat kinds <strong>of</strong> surrogate models are there? Different surrogate models will capturevarying levels <strong>of</strong> complex behavior with agiven degree <strong>of</strong> accuracy/error using acorresponding regression/training data setResponse Surface Equations• …altogether, surrogates can bemisused or abused for analysis• Selecting the “right” type <strong>of</strong> surrogate(validation) is as important asconstructing the surrogate “right”(verification)Gaussian Process Regression,Or KrigingArtificial Neural NetworksDeveloping Methods and Techniques for <strong>System</strong> <strong>of</strong> <strong>System</strong>s <strong>Engineering</strong>Dr. Dimitri Mavris, dimitri.mavris@ae.gatech.edu42
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