GenericActiveLearningSampler.h

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//* This file is part of the MOOSE framework
//* https://www.mooseframework.org
//*
//* 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"
#include "TransientInterface.h"
#include "Distribution.h"

class GenericActiveLearningSampler : public Sampler, public TransientInterface
{
public:
  static InputParameters validParams();

  GenericActiveLearningSampler(const InputParameters & parameters);

  const std::vector<std::vector<Real>> & getSampleTries() const;

  dof_id_type getNumParallelProposals() const { return _num_parallel_proposals; }

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

  std::vector<Distribution const *> _distributions;

  const unsigned int _num_parallel_proposals;

  const std::vector<unsigned int> & _sorted_indices;

  const std::vector<Real> & _initial_values;

  std::vector<std::vector<Real>> _new_samples;

private:
  const unsigned int _num_tries;

  std::vector<std::vector<Real>> _inputs_all;
};