Search Results for author: Tiago Marques

Found 6 papers, 5 papers with code

Matching the Neuronal Representations of V1 is Necessary to Improve Robustness in CNNs with V1-like Front-ends

1 code implementation16 Oct 2023 Ruxandra Barbulescu, Tiago Marques, Arlindo L. Oliveira

Here, we further explore this result and show that the neuronal representations that emerge from precisely matching the distribution of RF properties found in primate V1 is key for this improvement in robustness.

Object Recognition

Connecting metrics for shape-texture knowledge in computer vision

no code implementations25 Jan 2023 Tiago Oliveira, Tiago Marques, Arlindo L. Oliveira

Finally, we observed that while in general there is a correlation between performance and shape bias, there are significant variations between architecture families.

Image Classification Object Recognition

Neural Population Geometry Reveals the Role of Stochasticity in Robust Perception

1 code implementation NeurIPS 2021 Joel Dapello, Jenelle Feather, Hang Le, Tiago Marques, David D. Cox, Josh H. McDermott, James J. DiCarlo, SueYeon Chung

Adversarial examples are often cited by neuroscientists and machine learning researchers as an example of how computational models diverge from biological sensory systems.

Adversarial Robustness

Combining Different V1 Brain Model Variants to Improve Robustness to Image Corruptions in CNNs

1 code implementation NeurIPS Workshop SVRHM 2021 Avinash Baidya, Joel Dapello, James J. DiCarlo, Tiago Marques

Finally, we show that using distillation, it is possible to partially compress the knowledge in the ensemble model into a single model with a V1 front-end.

Wiring Up Vision: Minimizing Supervised Synaptic Updates Needed to Produce a Primate Ventral Stream

1 code implementation ICLR 2022 Franziska Geiger, Martin Schrimpf, Tiago Marques, James J. DiCarlo

Relative to the current leading model of the adult ventral stream, we here demonstrate that the total number of supervised weight updates can be substantially reduced using three complementary strategies: First, we find that only 2% of supervised updates (epochs and images) are needed to achieve ~80% of the match to adult ventral stream.

Developmental Learning Object Recognition

Simulating a Primary Visual Cortex at the Front of CNNs Improves Robustness to Image Perturbations

1 code implementation NeurIPS 2020 Joel Dapello, Tiago Marques, Martin Schrimpf, Franziska Geiger, David Cox, James J. DiCarlo

Current state-of-the-art object recognition models are largely based on convolutional neural network (CNN) architectures, which are loosely inspired by the primate visual system.

Object Recognition

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