MorrisSampler.h

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//* This file is part of the MOOSE framework
//* https://mooseframework.inl.gov
//*
//* All rights reserved, see COPYRIGHT for full restrictions
//* https://github.com/idaholab/moose/blob/master/COPYRIGHT
//*
//* Licensed under LGPL 2.1, please see LICENSE for details
//* https://www.gnu.org/licenses/lgpl-2.1.html

#pragma once

#include "Sampler.h"

class MorrisSampler : public Sampler
{
public:
  static InputParameters validParams();

  MorrisSampler(const InputParameters & parameters);

protected:
  virtual Real computeSample(dof_id_type row_index, dof_id_type col_index) override;

  virtual LocalRankConfig constructRankConfig(bool batch_mode) const override;

  const dof_id_type & _num_trajectories;
  const unsigned int & _num_levels;
  std::vector<const Distribution *> _distributions;

private:
  void updateBstar();

  dof_id_type _curr_trajectory = std::numeric_limits<dof_id_type>::max();

  RealEigenMatrix _b;
  RealEigenMatrix _pstar;
  RealEigenMatrix _j;
  RealEigenMatrix _dstar;
  RealEigenMatrix _xstar;
  RealEigenMatrix _bstar;
};