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Now showing items 19-21 of 160

    • System identification of neural systems: If we got it right, would we know? 

      Han, Yena; Poggio, Tomaso; Cheung, Brian (Center for Brains, Minds and Machines (CBMM), 2022-07-02)
      Various artificial neural networks developed by engineers have been evaluated as models of the brain, such as the ventral stream in the primate visual cortex. After being trained on large datasets, the network outputs are ...
    • PCA as a defense against some adversaries 

      Aparne, Gupta; Banburski, Andrzej; Poggio, Tomaso (Center for Brains, Minds and Machines (CBMM), 2022-03-30)
      Neural network classifiers are known to be highly vulnerable to adversarial perturbations in their inputs. Under the hypothesis that adversarial examples lie outside of the sub-manifold of natural images, previous work has ...
    • SGD Noise and Implicit Low-Rank Bias in Deep Neural Networks 

      Galanti, Tomer; Poggio, Tomaso (Center for Brains, Minds and Machines (CBMM), 2022-03-28)
      We analyze deep ReLU neural networks trained with mini-batch stochastic gradient decent and weight decay. We prove that the source of the SGD noise is an implicit low rank constraint across all of the weight matrices within ...