Thesis etd-09242020-172804 |
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Thesis type
Tesi di laurea magistrale
Author
AMENDOLA, MADDALENA
URN
etd-09242020-172804
Thesis title
Latent Assimilation: assimilating data in a latent space of a surrogate model
Department
INFORMATICA
Course of study
INFORMATICA
Supervisors
relatore Prof. Pappalardo, Luca
relatore Dott.ssa Arcucci, Rossella
relatore Dott.ssa Arcucci, Rossella
Keywords
- Data Assimilation
- Machine Leraning
Graduation session start date
09/10/2020
Availability
None
Summary
Formulation of a new methodology that combines machine learning and data assimilation techniques. The methodology consists in using an Autoencoder to reduce the size of the input. In the latent space, a recurrent neural network (LSTM) is used as a surrogate for a dynamic system. The accuracy of the model is improved by using the Kalman Filter in the latent space which incorporates data (observation) collected by sensors, producing the updated state. The updated state is then reported in the original physical space by the decoder. The methodology was applied to a real test case.
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