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Title: Online Machine Learning for Accelerating Molecular Dynamics Modeling of Cells

Journal Article · · Frontiers in Molecular Biosciences
 [1];  [1];  [1];  [2];  [3];  [4]
  1. Stony Brook Univ., NY (United States)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  3. IBM Thomas J. Watson Research Center, Yorktown Heights, NY (United States)
  4. Stony Brook Univ., NY (United States); New York Univ., Abu Dhabi (United Arab Emirates)

We developed a biomechanics-informed online learning framework to learn the dynamics with ground truth generated with multiscale modeling simulation. It was built on Summit-like supercomputers, which were also used to benchmark and validate our framework on one physiologically significant modeling of deformable biological cells. We generalized the century-old equation of Jeffery orbits to a new equation of motion with additional parameters to account for the flow conditions and the cell deformability. Using simulation data at particle-based resolutions for flowing cells and the learned parameters from our framework, we validated the new equation by the motions, mostly rotations, of a human platelet in shear blood flow at various shear stresses and platelet deformability. Our online framework, which surrogates redundant computations in the conventional multiscale modeling by solutions of our learned equation, accelerates the conventional modeling by three orders of magnitude without visible loss of accuracy.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC); SUNY-IBM Consortium; IPDyna: Intelligent Platelet Dynamics
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1860548
Journal Information:
Frontiers in Molecular Biosciences, Journal Name: Frontiers in Molecular Biosciences Journal Issue: n/a Vol. 8; ISSN 2296-889X
Publisher:
Frontiers Media S.A.Copyright Statement
Country of Publication:
United States
Language:
English

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