AI Shortcuts Speed Simulations Billions of Times

Source: Communications of the ACM – Artificial Intelligence

By Science
February 14, 2020
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A NASA aerosol model that shows soot from fires in Australia.

University of Oxford scientists led research that used artificial intelligence to generate accurate machine learning emulator algorithms for accelerating simulations billions of times, for all scientific disciplines.

Credit: NASA

Researchers led by the University of Oxford in the U.K. used artificial intelligence to generate accurate machine learning emulator algorithms for accelerating simulations billions of times, for all scientific disciplines.

The neural network-based emulators absorb the inputs and outputs of a full simulation, seeking patterns and learning to guess what the model would do with new inputs while avoiding the need to run the full simulation many times.

The Deep Emulator Network Search (DENSE) method randomly inserts computation layers between network inputs and outputs and trains the system with the limited data, so added layers that improve performance are more likely to end up in future variations.

DENSE-produced emulators for 10 simulations in physics, astronomy, geology, and climate science were 100,000 to 2 billion times faster than the models with the addition of specialized graphical processing chips—and were highly accurate.

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Abstracts Copyright © 2020 SmithBucklin, Washington, DC, USA


 

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