Search Results for author: James P. Sethna

Found 6 papers, 4 papers with code

A picture of the space of typical learnable tasks

2 code implementations31 Oct 2022 Rahul Ramesh, Jialin Mao, Itay Griniasty, Rubing Yang, Han Kheng Teoh, Mark Transtrum, James P. Sethna, Pratik Chaudhari

We develop information geometric techniques to understand the representations learned by deep networks when they are trained on different tasks using supervised, meta-, semi-supervised and contrastive learning.

Contrastive Learning Meta-Learning +1

Jeffrey's prior sampling of deep sigmoidal networks

no code implementations25 May 2017 Lorien X. Hayden, Alexander A. Alemi, Paul H. Ginsparg, James P. Sethna

Neural networks have been shown to have a remarkable ability to uncover low dimensional structure in data: the space of possible reconstructed images form a reduced model manifold in image space.

Denoising

Canonical Sectors and Evolution of Firms in the US Stock Markets

1 code implementation20 Mar 2015 Lorien X. Hayden, Ricky Chachra, Alexander A. Alemi, Paul H. Ginsparg, James P. Sethna

A classification of companies into sectors of the economy is important for macroeconomic analysis and for investments into the sector-specific financial indices and exchange traded funds (ETFs).

Classification

Improvements to the Levenberg-Marquardt algorithm for nonlinear least-squares minimization

3 code implementations27 Jan 2012 Mark K. Transtrum, James P. Sethna

We introduce several improvements to the Levenberg-Marquardt algorithm in order to improve both its convergence speed and robustness to initial parameter guesses.

Data Analysis, Statistics and Probability Computational Physics

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