Search Results for author: Nikhil Parthasarathy

Found 7 papers, 2 papers with code

Probing Biological and Artificial Neural Networks with Task-dependent Neural Manifolds

no code implementations21 Dec 2023 Michael Kuoch, Chi-Ning Chou, Nikhil Parthasarathy, Joel Dapello, James J. DiCarlo, Haim Sompolinsky, SueYeon Chung

Recently, growth in our understanding of the computations performed in both biological and artificial neural networks has largely been driven by either low-level mechanistic studies or global normative approaches.

Layerwise complexity-matched learning yields an improved model of cortical area V2

no code implementations18 Dec 2023 Nikhil Parthasarathy, Olivier J. Hénaff, Eero P. Simoncelli

Finally, when the two-stage model is used as a fixed front-end for a deep network trained to perform object recognition, the resultant model (LCL-V2Net) is significantly better than standard end-to-end self-supervised, supervised, and adversarially-trained models in terms of generalization to out-of-distribution tasks and alignment with human behavior.

Object Recognition

Self-Supervised Learning of a Biologically-Inspired Visual Texture Model

no code implementations30 Jun 2020 Nikhil Parthasarathy, Eero P. Simoncelli

These responses are processed by a second stage (analogous to cortical area V2) consisting of convolutional filters followed by half-wave rectification and pooling to generate V2 'complex cell' responses.

Self-Supervised Learning Texture Classification

A Linear Systems Theory of Normalizing Flows

1 code implementation15 Jul 2019 Reuben Feinman, Nikhil Parthasarathy

Normalizing Flows are a promising new class of algorithms for unsupervised learning based on maximum likelihood optimization with change of variables.

Neural Networks for Efficient Bayesian Decoding of Natural Images from Retinal Neurons

1 code implementation NeurIPS 2017 Nikhil Parthasarathy, Eleanor Batty, William Falcon, Thomas Rutten, Mohit Rajpal, E.J. Chichilnisky, Liam Paninski

Decoding sensory stimuli from neural signals can be used to reveal how we sense our physical environment, and is valuable for the design of brain-machine interfaces.

Bayesian Inference

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