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/*!
@authors Andrei Novikov (pyclustering@yandex.ru)
@date 2014-2020
@copyright BSD-3-Clause
*/
#include "samples.hpp"
#include <algorithm>
#include <fstream>
#include <iostream>
#include <random>
#include <sstream>
#if defined _WIN32 || defined __CYGWIN__
#define separator std::string("\\")
#else
#define separator std::string("/")
#endif
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_FOLDER =
".." + separator +
".." + separator +
"pyclustering" + separator +
"samples" + separator +
"samples" + separator +
"simple" + separator;
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_01 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple01.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_02 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple02.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_03 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple03.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_04 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple04.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_05 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple05.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_06 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple06.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_07 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple07.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_08 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple08.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_09 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple09.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_10 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple10.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_11 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple11.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_12 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple12.data";
const std::string simple_sample_factory::PATH_SAMPLE_SIMPLE_13 = PATH_SAMPLE_SIMPLE_FOLDER + "Simple13.data";
const simple_sample_factory::map_sample simple_sample_factory::m_sample_table = {
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_01, simple_sample_factory::PATH_SAMPLE_SIMPLE_01 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_02, simple_sample_factory::PATH_SAMPLE_SIMPLE_02 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_03, simple_sample_factory::PATH_SAMPLE_SIMPLE_03 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_04, simple_sample_factory::PATH_SAMPLE_SIMPLE_04 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_05, simple_sample_factory::PATH_SAMPLE_SIMPLE_05 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_06, simple_sample_factory::PATH_SAMPLE_SIMPLE_06 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_07, simple_sample_factory::PATH_SAMPLE_SIMPLE_07 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_08, simple_sample_factory::PATH_SAMPLE_SIMPLE_08 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_09, simple_sample_factory::PATH_SAMPLE_SIMPLE_09 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_10, simple_sample_factory::PATH_SAMPLE_SIMPLE_10 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_11, simple_sample_factory::PATH_SAMPLE_SIMPLE_11 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_12, simple_sample_factory::PATH_SAMPLE_SIMPLE_12 },
{ SAMPLE_SIMPLE::SAMPLE_SIMPLE_13, simple_sample_factory::PATH_SAMPLE_SIMPLE_13 }
};
const std::string fcps_sample_factory::PATH_FCPS_SAMPLE_FOLDER =
".." + separator +
".." + separator +
"pyclustering" + separator +
"samples" + separator +
"samples" + separator +
"fcps" + separator;
const std::string fcps_sample_factory::PATH_SAMPLE_ATOM = PATH_FCPS_SAMPLE_FOLDER + "Atom.data";
const std::string fcps_sample_factory::PATH_SAMPLE_CHAINLINK = PATH_FCPS_SAMPLE_FOLDER + "Chainlink.data";
const std::string fcps_sample_factory::PATH_SAMPLE_ENGY_TIME = PATH_FCPS_SAMPLE_FOLDER + "EngyTime.data";
const std::string fcps_sample_factory::PATH_SAMPLE_GOLF_BALL = PATH_FCPS_SAMPLE_FOLDER + "GolfBall.data";
const std::string fcps_sample_factory::PATH_SAMPLE_HEPTA = PATH_FCPS_SAMPLE_FOLDER + "Hepta.data";
const std::string fcps_sample_factory::PATH_SAMPLE_LSUN = PATH_FCPS_SAMPLE_FOLDER + "Lsun.data";
const std::string fcps_sample_factory::PATH_SAMPLE_TARGET = PATH_FCPS_SAMPLE_FOLDER + "Target.data";
const std::string fcps_sample_factory::PATH_SAMPLE_TETRA = PATH_FCPS_SAMPLE_FOLDER + "Tetra.data";
const std::string fcps_sample_factory::PATH_SAMPLE_TWO_DIAMONDS = PATH_FCPS_SAMPLE_FOLDER + "TwoDiamonds.data";
const std::string fcps_sample_factory::PATH_SAMPLE_WING_NUT = PATH_FCPS_SAMPLE_FOLDER + "WingNut.data";
const fcps_sample_factory::map_sample fcps_sample_factory::m_sample_table = {
{ FCPS_SAMPLE::ATOM, fcps_sample_factory::PATH_SAMPLE_ATOM },
{ FCPS_SAMPLE::CHAINLINK, fcps_sample_factory::PATH_SAMPLE_CHAINLINK },
{ FCPS_SAMPLE::ENGY_TIME, fcps_sample_factory::PATH_SAMPLE_ENGY_TIME },
{ FCPS_SAMPLE::GOLF_BALL, fcps_sample_factory::PATH_SAMPLE_GOLF_BALL },
{ FCPS_SAMPLE::HEPTA, fcps_sample_factory::PATH_SAMPLE_HEPTA },
{ FCPS_SAMPLE::LSUN, fcps_sample_factory::PATH_SAMPLE_LSUN },
{ FCPS_SAMPLE::TARGET, fcps_sample_factory::PATH_SAMPLE_TARGET },
{ FCPS_SAMPLE::TETRA, fcps_sample_factory::PATH_SAMPLE_TETRA },
{ FCPS_SAMPLE::TWO_DIAMONDS, fcps_sample_factory::PATH_SAMPLE_TWO_DIAMONDS },
{ FCPS_SAMPLE::WING_NUT, fcps_sample_factory::PATH_SAMPLE_WING_NUT }
};
const std::string famous_sample_factory::PATH_FAMOUS_SAMPLE_FOLDER =
".." + separator +
".." + separator +
"pyclustering" + separator +
"samples" + separator +
"samples" + separator +
"famous" + separator;
const std::string famous_sample_factory::PATH_OLD_FAITHFUL = PATH_FAMOUS_SAMPLE_FOLDER + "OldFaithful.data";
const std::string famous_sample_factory::PATH_IRIS = PATH_FAMOUS_SAMPLE_FOLDER + "Iris.data";
const famous_sample_factory::map_sample famous_sample_factory::m_sample_table = {
{ FAMOUS_SAMPLE::OLD_FAITHFUL, famous_sample_factory::PATH_OLD_FAITHFUL },
{ FAMOUS_SAMPLE::SAMPLE_IRIS, famous_sample_factory::PATH_IRIS }
};
std::shared_ptr<dataset> generic_sample_factory::create_sample(const std::string & path_sample) {
std::shared_ptr<dataset> sample_data(new dataset);
size_t sample_dimension = 0;
std::ifstream file_sample(path_sample);
if (file_sample.is_open()) {
std::string file_line;
while(std::getline(file_sample, file_line)) {
if (file_line.empty())
continue;
double value = 0.0;
point sample_point;
std::istringstream stream_value(file_line);
while(stream_value >> value) {
sample_point.push_back(value);
}
if (sample_dimension == 0) {
sample_dimension = sample_point.size();
}
else {
if (sample_dimension != sample_point.size()) {
throw std::runtime_error("Points from input data set should have the same dimension.");
}
}
sample_data->push_back(sample_point);
}
}
return sample_data;
}
std::shared_ptr<dataset> simple_sample_factory::create_sample(const SAMPLE_SIMPLE p_sample, const bool p_random_order) {
const std::string path_sample = m_sample_table.at(p_sample);
auto points = generic_sample_factory::create_sample(path_sample);
if (p_random_order) {
std::random_device device;
std::mt19937 generator(device());
std::shuffle(points->begin(), points->end(), generator);
}
return points;
}
std::shared_ptr<dataset> simple_sample_factory::create_random_sample(const std::size_t p_cluster_size, const std::size_t p_clusters) {
std::shared_ptr<dataset> sample_data(new dataset);
std::random_device device;
std::mt19937 generator(device());
for (std::size_t index_cluster = 0; index_cluster < p_clusters; index_cluster++) {
for (std::size_t index_point = 0; index_point < p_cluster_size; index_point++) {
sample_data->push_back({
std::generate_canonical<double, 32>(generator) + index_point * 5,
std::generate_canonical<double, 32>(generator) + index_point * 5
});
}
}
return sample_data;
}
std::shared_ptr<dataset> fcps_sample_factory::create_sample(const FCPS_SAMPLE sample) {
const std::string path_sample = m_sample_table.at(sample);
return generic_sample_factory::create_sample(path_sample);
}
std::shared_ptr<dataset> famous_sample_factory::create_sample(const FAMOUS_SAMPLE sample) {
const std::string path_sample = m_sample_table.at(sample);
return generic_sample_factory::create_sample(path_sample);
}
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