Discovering Physical Concepts with Neural Networks

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Original languageEnglish
Article number010508
JournalPhysical review letters
Volume124
Issue number1
Publication statusPublished - 8 Jan 2020
Externally publishedYes

Abstract

Despite the success of neural networks at solving concrete physics problems, their use as a general-purpose tool for scientific discovery is still in its infancy. Here, we approach this problem by modeling a neural network architecture after the human physical reasoning process, which has similarities to representation learning. This allows us to make progress towards the long-term goal of machine-assisted scientific discovery from experimental data without making prior assumptions about the system. We apply this method to toy examples and show that the network finds the physically relevant parameters, exploits conservation laws to make predictions, and can help to gain conceptual insights, e.g., Copernicus' conclusion that the solar system is heliocentric.

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Cite this

Discovering Physical Concepts with Neural Networks. / Iten, Raban; Metger, Tony; Wilming, Henrik et al.
In: Physical review letters, Vol. 124, No. 1, 010508, 08.01.2020.

Research output: Contribution to journalArticleResearchpeer review

Iten R, Metger T, Wilming H, Del Rio L, Renner R. Discovering Physical Concepts with Neural Networks. Physical review letters. 2020 Jan 8;124(1):010508. doi: 10.1103/PhysRevLett.124.010508
Iten, Raban ; Metger, Tony ; Wilming, Henrik et al. / Discovering Physical Concepts with Neural Networks. In: Physical review letters. 2020 ; Vol. 124, No. 1.
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abstract = "Despite the success of neural networks at solving concrete physics problems, their use as a general-purpose tool for scientific discovery is still in its infancy. Here, we approach this problem by modeling a neural network architecture after the human physical reasoning process, which has similarities to representation learning. This allows us to make progress towards the long-term goal of machine-assisted scientific discovery from experimental data without making prior assumptions about the system. We apply this method to toy examples and show that the network finds the physically relevant parameters, exploits conservation laws to make predictions, and can help to gain conceptual insights, e.g., Copernicus' conclusion that the solar system is heliocentric.",
author = "Raban Iten and Tony Metger and Henrik Wilming and {Del Rio}, L{\'i}dia and Renato Renner",
note = "Funding Information: We would like to thank Alessandro Achille, Serguei Beloussov, Ulrich Eberle, Thomas Frerix, Viktor Gal, Thomas H{\"a}ner, Maciej Koch-Janusz, Aurelien Lucchi, Ilya Nemenman, Joseph M. Renes, Andrea Rocchetto, Norman Sieroka, Ernest Y.-Z. Tan, Jinzhao Wang, and Leonard Wossnig for helpful discussions. We acknowledge support from the Swiss National Science Foundation through SNSF Project No. 200020_165843, the Swiss National Supercomputing Centre (CSCS) under project ID da04, and through the National Centre of Competence in Research Quantum Science and Technology (QSIT). L. d.R. and R. R. furthermore acknowledge support from the FQXi grant Physics of the observer. T. M. acknowledges support from ETH Z{\"u}rich and the ETH Foundation through the Excellence Scholarship & Opportunity Programme. ",
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