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/*********************************************************************
MLDemos: A User-Friendly visualization toolkit for machine learning
Copyright (C) 2010 Basilio Noris
Contact: mldemos@b4silio.com
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public License,
version 3 as published by the Free Software Foundation.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*********************************************************************/
#include "interfaceKKM.h"
#include <QPixmap>
#include <QBitmap>
#include <QPainter>
using namespace std;
ClustKKM::ClustKKM()
{
params = new Ui::ParametersKKM();
params->setupUi(widget = new QWidget());
connect(params->kernelTypeCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(ChangeOptions()));
}
void ClustKKM::ChangeOptions()
{
switch(params->kernelTypeCombo->currentIndex())
{
case 0: // linear
params->kernelDegSpin->setEnabled(false);
params->kernelDegSpin->setVisible(false);
break;
case 1: // poly
params->kernelDegSpin->setEnabled(true);
params->kernelDegSpin->setVisible(true);
params->kernelWidthSpin->setEnabled(false);
params->kernelWidthSpin->setVisible(false);
break;
case 2: // RBF
params->kernelDegSpin->setEnabled(false);
params->kernelDegSpin->setVisible(false);
params->kernelWidthSpin->setEnabled(true);
params->kernelWidthSpin->setVisible(true);
break;
}
}
void ClustKKM::SetParams(Clusterer *clusterer)
{
if(!clusterer) return;
int kernelType = params->kernelTypeCombo->currentIndex();
float kernelGamma = params->kernelWidthSpin->value();
float kernelDegree = params->kernelDegSpin->value();
int clusters = params->kernelClusterSpin->value();
ClustererKKM *kkm = ((ClustererKKM*)clusterer);
kkm->SetParams(clusters, kernelType, kernelGamma, kernelDegree);
}
Clusterer *ClustKKM::GetClusterer()
{
Clusterer *clusterer = new ClustererKKM();
SetParams(clusterer);
return clusterer;
}
void ClustKKM::DrawInfo(Canvas *canvas, QPainter &painter, Clusterer *clusterer)
{
if(!canvas || !clusterer) return;
}
void ClustKKM::DrawModel(Canvas *canvas, QPainter &painter, Clusterer *clusterer)
{
painter.setRenderHint(QPainter::Antialiasing);
FOR(i, canvas->data->GetSamples().size())
{
fvec sample = canvas->data->GetSample(i);
QPointF point = canvas->toCanvasCoords(sample);
fvec res = clusterer->Test(sample);
float r=0,g=0,b=0;
if(res.size() > 1)
{
FOR(j, res.size())
{
r += SampleColor[(j+1)%SampleColorCnt].red()*res[j];
g += SampleColor[(j+1)%SampleColorCnt].green()*res[j];
b += SampleColor[(j+1)%SampleColorCnt].blue()*res[j];
}
}
else if(res.size())
{
r = (1-res[0])*255 + res[0]* 255;
g = (1-res[0])*255;
b = (1-res[0])*255;
}
painter.setBrush(QColor(r,g,b));
painter.setPen(Qt::black);
painter.drawEllipse(point,5,5);
}
}
void ClustKKM::SaveOptions(QSettings &settings)
{
settings.setValue("kernelDeg", params->kernelDegSpin->value());
settings.setValue("kernelType", params->kernelTypeCombo->currentIndex());
settings.setValue("kernelWidth", params->kernelWidthSpin->value());
settings.setValue("kernelCluster", params->kernelClusterSpin->value());
}
bool ClustKKM::LoadOptions(QSettings &settings)
{
if(settings.contains("kernelDeg")) params->kernelDegSpin->setValue(settings.value("kernelDeg").toFloat());
if(settings.contains("kernelType")) params->kernelTypeCombo->setCurrentIndex(settings.value("kernelType").toInt());
if(settings.contains("kernelWidth")) params->kernelWidthSpin->setValue(settings.value("kernelWidth").toFloat());
if(settings.contains("kernelCluster")) params->kernelClusterSpin->setValue(settings.value("kernelCluster").toFloat());
ChangeOptions();
return true;
}
void ClustKKM::SaveParams(QTextStream &file)
{
file << "clusterOptions" << ":" << "kernelDeg" << " " << params->kernelDegSpin->value() << "\n";
file << "clusterOptions" << ":" << "kernelType" << " " << params->kernelTypeCombo->currentIndex() << "\n";
file << "clusterOptions" << ":" << "kernelWidth" << " " << params->kernelWidthSpin->value() << "\n";
file << "clusterOptions" << ":" << "kernelCluster" << " " << params->kernelClusterSpin->value() << "\n";
}
bool ClustKKM::LoadParams(QString name, float value)
{
if(name.endsWith("kernelDeg")) params->kernelDegSpin->setValue((int)value);
if(name.endsWith("kernelType")) params->kernelTypeCombo->setCurrentIndex((int)value);
if(name.endsWith("kernelWidth")) params->kernelWidthSpin->setValue(value);
if(name.endsWith("kernelCluster")) params->kernelClusterSpin->setValue((int)value);
ChangeOptions();
return true;
}
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