Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: A Unified Method for Inference of Tokamak Equilibria and Validation of
  Force-Balance Models Based on Bayesian Analysis   A new method, based on Bayesian analysis, is presented which unifies the
inference of plasma equilibria parameters in a Tokamak with the ability to
quantify differences between inferred equilibria and Grad-Shafranov
force-balance solutions. At the heart of this technique is the new method of
observation splitting, which allows multiple forward models to be associated
with a single diagnostic observation. This new idea subsequently provides a
means by which the the space of GS solutions can be efficiently characterised
via a prior distribution. Moreover, by folding force-balance directly into one
set of forward models and utilising simple Biot-Savart responses in another,
the Bayesian inference of the plasma parameters itself produces an evidence (a
normalisation constant of the inferred posterior distribution) which is
sensitive to the relative consistency between both sets of models. This
evidence can then be used to help determine the relative accuracy of the tested
force-balance model across several discharges/times. These ideas have been
implemented in a code called BEAST (Bayesian Equilibrium Analysis and
Simulation Tool), which uses a special implementation of Skilling's nested
sampling algorithm [Skilling, Bayesian Analysis 1(4), 833--859 (2006)] to
perform sampling and evidence calculations on high-dimensional, non-Gaussian
posteriors. Initial BEAST equilibrium inference results are presented for two
high-performance MAST discharges.

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The categories of this paper are: alg-geom
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The categories of this paper are: stat
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The categories of this paper are: eess
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The categories of this paper are: q-alg
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The categories of this paper are: bayes-an
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The categories of this paper are: cond-mat
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The categories of this paper are: comp-gas
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The categories of this paper are: mtrl-th
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The categories of this paper are: chem-ph
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The categories of this paper are: funct-an
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The categories of this paper are: hep-th
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The categories of this paper are: astro-ph
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The categories of this paper are: hep-ph
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat