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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Mathieu Carriere
*
* Copyright (C) 2018 INRIA (France)
*
* 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/>.
*/
#include <gudhi/Sliced_Wasserstein.h>
#include <iostream>
#include <vector>
#include <utility>
using Persistence_diagram = Gudhi::Persistence_representations::Persistence_diagram;
using SW = Gudhi::Persistence_representations::Sliced_Wasserstein;
int main(int argc, char** argv) {
Persistence_diagram persistence1, persistence2;
persistence1.push_back(std::make_pair(1, 2));
persistence1.push_back(std::make_pair(6, 8));
persistence1.push_back(std::make_pair(0, 4));
persistence1.push_back(std::make_pair(3, 8));
persistence2.push_back(std::make_pair(2, 9));
persistence2.push_back(std::make_pair(1, 6));
persistence2.push_back(std::make_pair(3, 5));
persistence2.push_back(std::make_pair(6, 10));
SW sw1(persistence1, 1, 100);
SW sw2(persistence2, 1, 100);
SW swex1(persistence1, 1, -1);
SW swex2(persistence2, 1, -1);
std::cout << "Approx SW kernel: " << sw1.compute_scalar_product(sw2) << std::endl;
std::cout << "Exact SW kernel: " << swex1.compute_scalar_product(swex2) << std::endl;
std::cout << "Distance induced by approx SW kernel: " << sw1.distance(sw2) << std::endl;
std::cout << "Distance induced by exact SW kernel: " << swex1.distance(swex2) << std::endl;
return 0;
}
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