Answers.Body: <p>In a typical situation, for the emulation of physical environments, you need to define all physical rules and forces. In the &quot;learned emulators&quot;, they use some machine learning techniques to learn those rules by supervising and interacting (instead of formalizing all of them). In this case, they do not need any exact formulation of the physical environment to emulate it.</p>
  <p>An instance of this simulation can be this article <a href="https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.8b00902" rel="nofollow noreferrer">&quot;Realistic Atomistic Structure of Amorphous Silicon from Machine-Learning-Driven Molecular Dynamics&quot;</a>, i.e., a machine-learning-driven simulation instead of exact formulation of the environment.</p>
  
Answers.ContentLicense: CC BY-SA 4.0
Answers.CreationDate: 2020-09-09T10:50:14.957Z
Answers.LastActivityDate: 2020-09-09T13:15:01.340Z
Answers.LastEditDate: 2020-09-09T13:15:01.340Z
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Body: <p>In <a href="https://cdac.uchicago.edu/research/learned-emulators-of-physics-simulations/" rel="nofollow noreferrer">this article</a>, the term &quot;learned emulator&quot; is used.</p>
  <blockquote>
  <p>Recently, scientists have started creating &quot;learned emulators&quot; using
  AI neural network approaches, but have not yet fully explored the
  advantages and potential pitfalls of these surrogates.</p>
  </blockquote>
  <p>What is a &quot;learned emulator&quot;?  I believe it is related to neural networks. Where can I read more?</p>
  
Tags: <machine-learning><terminology><applications>
Title: What is a "learned emulator"?
UserDisplayName: confused
ThreadText: # What is a "learned emulator"?
  
  (Asked by: username_0 on 2020-09-09)
  
  In [this article](https://cdac.uchicago.edu/research/learned-emulators-of-physics-simulations/), the term "learned emulator" is used.
  
  > Recently, scientists have started creating "learned emulators" using
  > AI neural network approaches, but have not yet fully explored the
  > advantages and potential pitfalls of these surrogates.
  
  What is a "learned emulator"? I believe it is related to neural networks. Where can I read more?
  
  **Tags:** machine-learning, terminology, applications
  
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  ## 1 answers
  
  ### Answer by username_1 on 2020-09-09. Score: 1
  
  In a typical situation, for the emulation of physical environments, you need to define all physical rules and forces. In the "learned emulators", they use some machine learning techniques to learn those rules by supervising and interacting (instead of formalizing all of them). In this case, they do not need any exact formulation of the physical environment to emulate it.
  
  An instance of this simulation can be this article ["Realistic Atomistic Structure of Amorphous Silicon from Machine-Learning-Driven Molecular Dynamics"](https://pubs.acs.org/doi/abs/10.1021/acs.jpclett.8b00902), i.e., a machine-learning-driven simulation instead of exact formulation of the environment.
  
  
  ---
  
  