Search Results for author: Giorgia Dellaferrera

Found 8 papers, 2 papers with code

Intrinsic Biologically Plausible Adversarial Training

no code implementations29 Sep 2023 Matilde Tristany Farinha, Thomas Ortner, Giorgia Dellaferrera, Benjamin Grewe, Angeliki Pantazi

Artificial Neural Networks (ANNs) trained with Backpropagation (BP) excel in different daily tasks but have a dangerous vulnerability: inputs with small targeted perturbations, also known as adversarial samples, can drastically disrupt their performance.

Adversarial Robustness

Forward Learning with Top-Down Feedback: Empirical and Analytical Characterization

no code implementations10 Feb 2023 Ravi Srinivasan, Francesca Mignacco, Martino Sorbaro, Maria Refinetti, Avi Cooper, Gabriel Kreiman, Giorgia Dellaferrera

"Forward-only" algorithms, which train neural networks while avoiding a backward pass, have recently gained attention as a way of solving the biologically unrealistic aspects of backpropagation.

Error-driven Input Modulation: Solving the Credit Assignment Problem without a Backward Pass

1 code implementation27 Jan 2022 Giorgia Dellaferrera, Gabriel Kreiman

Supervised learning in artificial neural networks typically relies on backpropagation, where the weights are updated based on the error-function gradients and sequentially propagated from the output layer to the input layer.

Modeling the Repetition-based Recovering of Acoustic and Visual Sources with Dendritic Neurons

1 code implementation16 Jan 2022 Giorgia Dellaferrera, Toshitake Asabuki, Tomoki Fukai

Furthermore, we extend the study to investigate the properties of segregation on task settings not yet explored with human subjects, namely natural sounds and images.

blind source separation

Learning in Deep Neural Networks Using a Biologically Inspired Optimizer

no code implementations23 Apr 2021 Giorgia Dellaferrera, Stanislaw Wozniak, Giacomo Indiveri, Angeliki Pantazi, Evangelos Eleftheriou

Here, we propose a novel biologically inspired optimizer for artificial (ANNs) and spiking neural networks (SNNs) that incorporates key principles of synaptic integration observed in dendrites of cortical neurons: GRAPES (Group Responsibility for Adjusting the Propagation of Error Signals).

Fooling the primate brain with minimal, targeted image manipulation

no code implementations11 Nov 2020 Li Yuan, Will Xiao, Giorgia Dellaferrera, Gabriel Kreiman, Francis E. H. Tay, Jiashi Feng, Margaret S. Livingstone

Here we propose an array of methods for creating minimal, targeted image perturbations that lead to changes in both neuronal activity and perception as reflected in behavior.

Adversarial Attack Image Manipulation

Spiking neural networks trained with backpropagation for low power neuromorphic implementation of voice activity detection

no code implementations22 Oct 2019 Flavio Martinelli, Giorgia Dellaferrera, Pablo Mainar, Milos Cernak

We describe an SNN training procedure that achieves low spiking activity and pruning algorithms to remove 85% of the network connections with no performance loss.

Action Detection Activity Detection

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