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move paradiseo/eo to deprecated/ before merge with eodev

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Johann Dreo 2012-10-05 15:12:12 +02:00
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133
eo/contrib/mathsym/regression/Dataset.cpp
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@ -1,133 +0,0 @@
/*
* Copyright (C) 2005 Maarten Keijzer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "Dataset.h"
#include <fstream>
#include <sstream>
#include <iostream>
using namespace std;
class DataSetImpl {
public:
vector< vector<double> > inputs;
vector<double> targets;
void read_data(vector<string> strings) {
// find the number of inputs
istringstream cnt(strings[0]);
unsigned n = 0;
for (;;) {
string s;
cnt >> s;
if (!cnt) break;
++n;
}
inputs.resize(strings.size(), vector<double>(n-1));
targets.resize(strings.size());
for (unsigned i = 0; i < strings.size(); ++i) {
istringstream is(strings[i]);
for (unsigned j = 0; j < n; ++j) {
if (!is) {
cerr << "Too few targets in record " << i << endl;
exit(1);
}
if (j < n-1) {
is >> inputs[i][j];
} else {
is >> targets[i];
}
}
}
}
};
Dataset::Dataset() { pimpl = new DataSetImpl; }
Dataset::~Dataset() { delete pimpl; }
Dataset::Dataset(const Dataset& that) { pimpl = new DataSetImpl(*that.pimpl); }
Dataset& Dataset::operator=(const Dataset& that) { *pimpl = *that.pimpl; return *this; }
unsigned Dataset::n_records() const { return pimpl->targets.size(); }
unsigned Dataset::n_fields() const { return pimpl->inputs[0].size(); }
const std::vector<double>& Dataset::get_inputs(unsigned record) const { return pimpl->inputs[record]; }
double Dataset::get_target(unsigned record) const { return pimpl->targets[record]; }
double error(string errstr);
void Dataset::load_data(std::string filename) {
vector<string> strings; // first load it in strings
ifstream is(filename.c_str());
for(;;) {
string s;
getline(is, s);
if (!is) break;
if (s[0] == '#') continue; // comment, skip
strings.push_back(s);
}
is.close();
if (strings.size() == 0) {
error("No data could be loaded");
}
pimpl->read_data(strings);
}
std::vector<double> Dataset::input_minima() const {
vector<vector<double> >& in = pimpl->inputs;
vector<double> mn(in[0].size(), 1e+50);
for (unsigned i = 0; i < in.size(); ++i) {
for (unsigned j = 0; j < in[i].size(); ++j) {
mn[j] = std::min(mn[j], in[i][j]);
}
}
return mn;
}
vector<double> Dataset::input_maxima() const {
vector<vector<double> >& in = pimpl->inputs;
vector<double> mx(in[0].size(), -1e+50);
for (unsigned i = 0; i < in.size(); ++i) {
for (unsigned j = 0; j < in[i].size(); ++j) {
mx[j] = std::max(mx[j], in[i][j]);
}
}
return mx;
}