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birthslice.hpp
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birthslice.hpp
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//
// TDTWavetomo2d : Software for the inversion of surface wave datasets using the
// trans-dimensional tree approach using a wavelet parameterisation. See
//
// R Hawkins and M Sambridge, "Geophysical imaging using trans-dimensional trees",
// Geophysical Journal International, 2015, 203:2, 972 - 1000,
// https://doi.org/10.1093/gji/ggv326
//
// Copyright (C) 2014 - 2018 Rhys Hawkins
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
//
#pragma once
#ifndef birthslice_hpp
#define birthslice_hpp
#include "globalslice.hpp"
#include <mpi.h>
class BirthSlice {
public:
BirthSlice(GlobalSlice &global);
~BirthSlice();
int step();
std::string write_short_stats();
std::string write_long_stats();
void initialize_mpi(MPI_Comm communicator);
GlobalSlice &global;
int propose;
int accept;
int *propose_depth;
int *accept_depth;
MPI_Comm communicator;
int mpi_size;
int mpi_rank;
private:
bool primary() const;
int choose_birth_location_and_value(int k,
double &ratio,
int &birth_depth,
int &birth_idx,
double &choose_prob,
double &birth_value,
double &birth_prob,
int &birth_valid,
double &birth_parent_coeff,
int &ii,
int &ij);
int communicate_birth_location_and_value(int &birth_valid,
int &birth_idx,
int &birth_depth,
double &birth_value);
int propose_birth(int &birth_valid,
int &birth_idx,
int &birth_depth,
double &birth_value);
int compute_reverse_birth_probability(int birth_depth,
int birth_idx,
int ii,
int ij,
double birth_parent_coeff,
double birth_value,
double &reverse_prob,
double &prior_prob);
int compute_likelihood(int birth_idx, double &proposed_likelihood, double &proposed_log_normalization);
int compute_acceptance(double proposed_likelihood,
double proposed_log_normalization,
double reverse_prob,
double choose_prob,
double birth_prob,
double ratio,
double prior_prob,
bool &accept_proposal);
int communicate_acceptance(bool &accept_proposal);
};
#endif // birthslice_hpp