Search Results for author: Ryan Blything

Found 4 papers, 1 papers with code

A case for robust translation tolerance in humans and CNNs. A commentary on Han et al

no code implementations10 Dec 2020 Ryan Blything, Valerio Biscione, Jeffrey Bowers

Han et al. (2020) reported a behavioral experiment that assessed the extent to which the human visual system can identify novel images at unseen retinal locations (what the authors call "intrinsic translation invariance") and developed a novel convolutional neural network model (an Eccentricity Dependent Network or ENN) to capture key aspects of the behavioral results.

Translation

The human visual system and CNNs can both support robust online translation tolerance following extreme displacements

no code implementations27 Sep 2020 Ryan Blything, Valerio Biscione, Ivan I. Vankov, Casimir J. H. Ludwig, Jeffrey S. Bowers

Although translation is perhaps the simplest spatial transform that the visual system needs to cope with, the extent to which the human visual system can identify objects at previously unseen locations is unclear, with some studies reporting near complete invariance over 10{\deg} and other reporting zero invariance at 4{\deg} of visual angle.

Translation

Are there any 'object detectors' in the hidden layers of CNNs trained to identify objects or scenes?

1 code implementation2 Jul 2020 Ella M. Gale, Nicholas Martin, Ryan Blything, Anh Nguyen, Jeffrey S. Bowers

We find that the different measures provide different estimates of object selectivity, with precision and CCMAS measures providing misleadingly high estimates.

General Classification Image Classification +1

Selectivity metrics can overestimate the selectivity of units: a case study on AlexNet

no code implementations27 Sep 2018 Ella M. Gale, Anh Nguyen, Ryan Blything, Nicholas Martin and Jeffrey S. Bowers

These findings highlight the problem with current selectivity measures and show that new measures are required in order to provide a better assessment of learned representations in NNs.

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