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SVCCA: Singular Vector Canonical Correlation Analysis for Deep Learning Dynamics and Interpretability
Maithra Raghu · Justin Gilmer · Jason Yosinski · Jascha Sohl-Dickstein

Mon Dec 04 06:30 PM -- 10:30 PM (PST) @ Pacific Ballroom #11 #None

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.

Author Information

Maithra Raghu (Cornell University and Google Brain)
Justin Gilmer (Google Brain)
Jason Yosinski (Uber)
Jascha Sohl-Dickstein (Google Brain)

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