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Brett W. Larsen

4 accepted papers

2024

Estimating Shape Distances on Neural Representations with Limited Samples

ICLR 2024poster

Measuring geometric similarity between high-dimensional network representations is a topic of longstanding interest to neuroscience and deep learning. Although many methods have been proposed, only a few works have rigorously analyzed their statistical efficiency or quantified estimator uncertainty…

2023

Unmasking the Lottery Ticket Hypothesis: What's Encoded in a Winning Ticket's Mask?

ICLR 2023top-25%

As neural networks get larger and costlier, it is important to find sparse networks that require less compute and memory but can be trained to the same accuracy as the full network (i.e. matching). Iterative magnitude pruning (IMP) is a state of the art algorithm that can find such highly sparse mat…

Cited by 50SourcePDFScholar
2022

How many degrees of freedom do we need to train deep networks: a loss landscape perspective

ICLR 2022poster

A variety of recent works, spanning pruning, lottery tickets, and training within random subspaces, have shown that deep neural networks can be trained using far fewer degrees of freedom than the total number of parameters. We analyze this phenomenon for random subspaces by first examining the succe…

2022

Lottery Tickets on a Data Diet: Finding Initializations with Sparse Trainable Networks

NeurIPS 2022accept

A striking observation about iterative magnitude pruning (IMP; Frankle et al. 2020) is that—after just a few hundred steps of dense training—the method can find a sparse sub-network that can be trained to the same accuracy as the dense network. However, the same does not hold at step 0, i.e. random…