SVCCA: Singular Vector Canonical Correlation Analysis for Deep Learning Dynamics and Interpretability
Abstract
We propose a new technique, Singular Vector Canonical Correlation Analysis (SVCCA), a tool for quickly comparing two representations in a way that is both invariant to affine transform (allowing comparison between different layers and networks) and fast to compute (allowing more comparisons to be calculated than with previous methods). We deploy this tool to measure the intrinsic dimensionality of layers, showing in some cases needless over-parameterization; to probe learning dynamics throughout training, finding that networks converge to final representations from the bottom up; to show where class-specific information in networks is formed; and to suggest new training regimes that simultaneously save computation and overfit less. Code: https://github.com/google/svcca/
Keywords
Cite
@article{arxiv.1706.05806,
title = {SVCCA: Singular Vector Canonical Correlation Analysis for Deep Learning Dynamics and Interpretability},
author = {Maithra Raghu and Justin Gilmer and Jason Yosinski and Jascha Sohl-Dickstein},
journal= {arXiv preprint arXiv:1706.05806},
year = {2017}
}
Comments
Accepted to NIPS 2017, code: https://github.com/google/svcca/ , new plots on Imagenet