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    • 6. 发明公开
    • A METHOD FOR TRAINING DETERMINISTIC AUTOENCODERS
    • EP4328799A1
    • 2024-02-28
    • EP22192386.5
    • 2022-08-26
    • Robert Bosch GmbH
    • Saseendran, AmruthaKeuper, MargretSkubch, Kathrin
    • G06N3/0455G06N3/088G06N3/094G06N7/01
    • A method (100) for training a deterministic autoencoder (1) for records (4) of measurement data, wherein the autoencoder (1) comprises an encoder (2) that maps a record (4) of measurement data as input to a representation (5) in a latent space that has a lower dimensionality than the input (4) in a deterministic manner and a decoder (3) that reconstructs a record (4#) of measurement data from the representation (5) in a deterministic manner, the method (100) comprising the steps of:
      • providing (110) training records (4a) of measurement data;
      • determining (120) adversarial records (4b) that do not belong to a distribution and/or domain to which the training records (4a) of measurement data belong;
      • processing (130), by the encoder (2), both training records (4a) and adversarial records (4b) into respective representations (5a, 5b);
      • reconstructing (140), by the decoder (3), records (4#) of measurement data from the representations (5a, 5b);
      • evaluating (150) a loss function (6) that measures
      ∘ how similar the reconstructed records (4#) of measurement data are to the corresponding training records (4a), respectively adversarial records (4b); and
      ∘ how similar distributions of the representations (5a, 5b) are to a given prior distribution; and

      • optimizing (160) parameters (1a) that characterize the behavior of the autoencoder (1) towards the goal that, when processing further training records (4a) and adversarial records (4b), the value (6a) of the loss function (6) improves.