activity
20132023
most citedFoveation-based Mechanisms Alleviate Adversarial Examples

137 citations · 227 across the 23 of their papers we have counts for

collaborators

23 papers

cs.AI2023

D3: Data Diversity Design for Systematic Generalization in Visual Question Answering

Amir Rahimi, Vanessa D'Amario, Moyuru Yamada +3

Systematic generalization is a crucial aspect of intelligence, which refers to the ability to generalize to novel tasks by combining known subtasks and concepts. One critical facto…

cs.LG2023★ 1 cited

Modularity Trumps Invariance for Compositional Robustness

Ian Mason, Anirban Sarkar, Tomotake Sasaki +1

By default neural networks are not robust to changes in data distribution. This has been demonstrated with simple image corruptions, such as blurring or adding noise, degrading ima…

cs.LG2023

Deephys: Deep Electrophysiology, Debugging Neural Networks under Distribution Shifts

Anirban Sarkar, Matthew Groth, Ian Mason +2

Deep Neural Networks (DNNs) often fail in out-of-distribution scenarios. In this paper, we introduce a tool to visualize and understand such failures. We draw inspiration from conc…

cs.CV2022★ 5 cited

Do Neural Networks for Segmentation Understand Insideness?

Kimberly Villalobos, Vilim Štih, Amineh Ahmadinejad +6

The insideness problem is an aspect of image segmentation that consists of determining which pixels are inside and outside a region. Deep Neural Networks (DNNs) excel in segmentati…

cs.CV2022

Symmetry Perception by Deep Networks: Inadequacy of Feed-Forward Architectures and Improvements with Recurrent Connections

Shobhita Sundaram, Darius Sinha, Matthew Groth +2

Symmetry is omnipresent in nature and perceived by the visual system of many species, as it facilitates detecting ecologically important classes of objects in our environment. Symm…

cs.CV2022★ 2 cited

Transformer Module Networks for Systematic Generalization in Visual Question Answering

Moyuru Yamada, Vanessa D'Amario, Kentaro Takemoto +2

Transformers achieve great performance on Visual Question Answering (VQA). However, their systematic generalization capabilities, i.e., handling novel combinations of known concept…

cs.LG2021

Robust Upper Bounds for Adversarial Training

Dimitris Bertsimas, Xavier Boix, Kimberly Villalobos Carballo +1

Many state-of-the-art adversarial training methods for deep learning leverage upper bounds of the adversarial loss to provide security guarantees against adversarial attacks. Yet,…

cs.CV2021

Three approaches to facilitate DNN generalization to objects in out-of-distribution orientations and illuminations

Akira Sakai, Taro Sunagawa, Spandan Madan +7

The training data distribution is often biased towards objects in certain orientations and illumination conditions. While humans have a remarkable capability of recognizing objects…

cs.CV2021★ 1 cited

Emergent Neural Network Mechanisms for Generalization to Objects in Novel Orientations

Avi Cooper, Xavier Boix, Daniel Harari +4

The capability of Deep Neural Networks (DNNs) to recognize objects in orientations outside the distribution of the training data is not well understood. We present evidence that DN…

cs.LG2021★ 1 cited

The Foes of Neural Network's Data Efficiency Among Unnecessary Input Dimensions

Vanessa D'Amario, Sanjana Srivastava, Tomotake Sasaki +1

Datasets often contain input dimensions that are unnecessary to predict the output label, e.g. background in object recognition, which lead to more trainable parameters. Deep Neura…

cs.CV2021

In-distribution adversarial attacks on object recognition models using gradient-free search

Spandan Madan, Tomotake Sasaki, Hanspeter Pfister +2

Neural networks are susceptible to small perturbations in the form of 2D rotations and shifts, image crops, and even changes in object colors. Past works attribute these errors to…

cs.LG2021

How Modular Should Neural Module Networks Be for Systematic Generalization?

Vanessa D'Amario, Tomotake Sasaki, Xavier Boix

Neural Module Networks (NMNs) aim at Visual Question Answering (VQA) via composition of modules that tackle a sub-task. NMNs are a promising strategy to achieve systematic generali…

cs.CV2020★ 3 cited

When and how CNNs generalize to out-of-distribution category-viewpoint combinations

Spandan Madan, Timothy Henry, Jamell Dozier +6

Object recognition and viewpoint estimation lie at the heart of visual understanding. Recent works suggest that convolutional neural networks (CNNs) fail to generalize to out-of-di…

cs.CV2020

Robustness to Transformations Across Categories: Is Robustness To Transformations Driven by Invariant Neural Representations?

Hojin Jang, Syed Suleman Abbas Zaidi, Xavier Boix +4

Deep Convolutional Neural Networks (DCNNs) have demonstrated impressive robustness to recognize objects under transformations (eg. blur or noise) when these transformations are inc…

cs.LG2019★ 1 cited

Frivolous Units: Wider Networks Are Not Really That Wide

Stephen Casper, Xavier Boix, Vanessa D'Amario +4

A remarkable characteristic of overparameterized deep neural networks (DNNs) is that their accuracy does not degrade when the network's width is increased. Recent evidence suggests…

cs.CV2019★ 4 cited

Minimal Images in Deep Neural Networks: Fragile Object Recognition in Natural Images

Sanjana Srivastava, Guy Ben-Yosef, Xavier Boix

The human ability to recognize objects is impaired when the object is not shown in full. "Minimal images" are the smallest regions of an image that remain recognizable for humans.…

cs.LG2018★ 14 cited

Theory IIIb: Generalization in Deep Networks

Tomaso Poggio, Qianli Liao, Brando Miranda +3

A main puzzle of deep neural networks (DNNs) revolves around the apparent absence of "overfitting", defined in this paper as follows: the expected error does not get worse when inc…

cs.LG2018★ 49 cited

Theory of Deep Learning III: explaining the non-overfitting puzzle

Tomaso Poggio, Kenji Kawaguchi, Qianli Liao +5

A main puzzle of deep networks revolves around the absence of overfitting despite large overparametrization and despite the large capacity demonstrated by zero training error on ra…

cs.CV2016★ 1 cited

Herding Generalizes Diverse M -Best Solutions

Ece Ozkan, Gemma Roig, Orcun Goksel +1

We show that the algorithm to extract diverse M -solutions from a Conditional Random Field (called divMbest [1]) takes exactly the form of a Herding procedure [2], i.e. a determini…

cs.LG2015★ 137 cited

Foveation-based Mechanisms Alleviate Adversarial Examples

Yan Luo, Xavier Boix, Gemma Roig +2

We show that adversarial examples, i.e., the visually imperceptible perturbations that result in Convolutional Neural Networks (CNNs) fail, can be alleviated with a mechanism based…

cs.CV2014★ 2 cited

Comment on "Ensemble Projection for Semi-supervised Image Classification"

Xavier Boix, Gemma Roig, Luc Van Gool

In a series of papers by Dai and colleagues [1,2], a feature map (or kernel) was introduced for semi- and unsupervised learning. This feature map is build from the output of an ens…

cs.CV2013★ 6 cited

SEEDS: Superpixels Extracted via Energy-Driven Sampling

Michael Van den Bergh, Xavier Boix, Gemma Roig +1

Superpixel algorithms aim to over-segment the image by grouping pixels that belong to the same object. Many state-of-the-art superpixel algorithms rely on minimizing objective func…

cs.CV2013

Random Binary Mappings for Kernel Learning and Efficient SVM

Gemma Roig, Xavier Boix, Luc Van Gool

Support Vector Machines (SVMs) are powerful learners that have led to state-of-the-art results in various computer vision problems. SVMs suffer from various drawbacks in terms of s…