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DTSTAMP:20181221T160726Z
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DTSTART;TZID=America/Chicago:20181111T142100
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UID:submissions.supercomputing.org_SC18_sess160_ws_whpc107@linklings.com
SUMMARY:Deep Learning:  Extrapolation Tool for Computational Nuclear Physi
 cs
DESCRIPTION:Workshop\nDiversity, Education, Hot Topics, Workshop Reg Pass\
 n\nDeep Learning:  Extrapolation Tool for Computational Nuclear Physics\n\
 nNegoita\n\nThe goal of nuclear theory is to understand how nuclei arise f
 rom interacting nucleons based on the underlying theory of the strong inte
 ractions, quantum chromodynamics (QCD). The interactions among the nucleon
 s inside a nucleus are dominated by the strong interaction, which is non-p
 erturbative in the low-energy regime relevant for nuclear physics. With ac
 cess to powerful High Performance Computing (HPC) systems, several ab init
 io approaches have been developed to study nuclear structure and reactions
 , such as the No-Core Shell Model (NCSM). The NCSM  and other approaches r
 equire an extrapolation of the results obtained in a finite basis space to
  the infinite basis space limit and assessment of the uncertainty of those
  extrapolations.  Each observable requires a separate extrapolation and mo
 st observables have no proven extrapolation method at the present time. We
  propose a feed-forward artificial neural network (ANN) method as an extra
 polation tool to obtain the ground state energy and the ground state point
  proton root-mean-square (rms) radius and their extrapolation uncertaintie
 s. We have generated theoretical data for 6Li by performing ab initio NCSM
  calculations using basis spaces up through the largest computationally fe
 asible basis space. The designed ANNs are sufficient to produce results fo
 r these two very different observables in ^6Li from the ab initio NCSM res
 ults in small basis spaces that satisfy the following theoretical physics 
 condition: independence of basis space parameters in the limit of extremel
 y large matrices. Comparisons of the ANN results with other extrapolation 
 methods are also provided.
URL:https://sc18.supercomputing.org/presentation/?id=ws_whpc107&sess=sess1
 60
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