Active Manifold and Model Order Reduction to Accelerate Multidisciplinary Analysis and Optimization - presented by Prof. Charbel Farhat

Active Manifold and Model Order Reduction to Accelerate Multidisciplinary Analysis and Optimization

Prof. Charbel Farhat

Prof. Charbel Farhat
Slide at 52:41
Charbel
Construction of Nonlinear Function gu and Associated Active Manifold
Augment the training data as follows
Sk =
U{Sk)
Construct g u using an autoencoder - that is, a forward artificial neural network
Encoder function
Decoder function
Scaling
Inverse
operator
Scaling
operator
Latent
features
Input
Reconstructed
vector
vector
Convolutional layers
Fully-connected layers
Transpose
convolutional layers
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Summary (AI generated)

When you give data to an autoencoder, it will detect all the features contained within, focusing on the essential information. This process is similar to a nonlinear version of a singular value decomposition. The autoencoder provides a mapping that allows for the transition between a lower-dimensional parameter space and a higher-dimensional one.

For a quick example, let's move on to a multiobjective scenario.