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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 "interfaceRVMRegress.h"
#include <QPixmap>
#include <QBitmap>
#include <QPainter>
using namespace std;
RegrRVM::RegrRVM()
{
params = new Ui::ParametersRVMRegr();
params->setupUi(widget = new QWidget());
connect(params->kernelTypeCombo, SIGNAL(currentIndexChanged(int)), this, SLOT(ChangeOptions()));
ChangeOptions();
}
RegrRVM::~RegrRVM()
{
delete params;
}
void RegrRVM::ChangeOptions()
{
switch(params->kernelTypeCombo->currentIndex())
{
case 0: // linear
params->kernelDegSpin->setVisible(false);
params->labelDegree->setVisible(false);
params->kernelWidthSpin->setVisible(false);
params->labelWidth->setVisible(false);
break;
case 1: // poly
params->kernelDegSpin->setVisible(true);
params->labelDegree->setVisible(true);
params->kernelWidthSpin->setVisible(false);
params->labelWidth->setVisible(false);
break;
case 2: // RBF
params->kernelDegSpin->setVisible(false);
params->labelDegree->setVisible(false);
params->kernelWidthSpin->setVisible(true);
params->labelWidth->setVisible(true);
break;
case 3: // SIGMOID
params->kernelDegSpin->setEnabled(false);
params->labelDegree->setVisible(false);
params->kernelWidthSpin->setEnabled(true);
params->labelWidth->setVisible(true);
break;
}
}
void RegrRVM::SetParams(Regressor *regressor)
{
if(!regressor) return;
SetParams(regressor, GetParams());
}
fvec RegrRVM::GetParams()
{
float svmP = params->svmPSpin->value();
int kernelType = params->kernelTypeCombo->currentIndex();
float kernelGamma = params->kernelWidthSpin->value();
float kernelDegree = params->kernelDegSpin->value();
fvec par(4);
par[0] = svmP;
par[1] = kernelType;
par[2] = kernelGamma;
par[3] = kernelDegree;
return par;
}
void RegrRVM::SetParams(Regressor *regressor, fvec parameters)
{
if(!regressor) return;
float svmP = parameters.size() > 0 ? parameters[0] : 1;
int kernelType = parameters.size() > 1 ? parameters[1] : 0;
float kernelGamma = parameters.size() > 2 ? parameters[2] : 0;
int kernelDegree = parameters.size() > 3 ? parameters[3] : 0;
RegressorRVM *rvm = dynamic_cast<RegressorRVM *>(regressor);
if(rvm) rvm->SetParams(svmP, kernelType, kernelGamma, kernelDegree);
}
void RegrRVM::GetParameterList(std::vector<QString> ¶meterNames,
std::vector<QString> ¶meterTypes,
std::vector< std::vector<QString> > ¶meterValues)
{
parameterNames.push_back("Epsilon");
parameterNames.push_back("Kernel Type");
parameterNames.push_back("Kernel Width");
parameterNames.push_back("Kernel Degree");
parameterTypes.push_back("Real");
parameterTypes.push_back("List");
parameterTypes.push_back("Real");
parameterTypes.push_back("Integer");
parameterValues.push_back(vector<QString>());
parameterValues.back().push_back("0.00000001f");
parameterValues.back().push_back("99999999999999");
parameterValues.push_back(vector<QString>());
parameterValues.back().push_back("Linear");
parameterValues.back().push_back("Poly");
parameterValues.back().push_back("RBF");
parameterValues.push_back(vector<QString>());
parameterValues.back().push_back("0.00000001f");
parameterValues.back().push_back("9999999");
parameterValues.push_back(vector<QString>());
parameterValues.back().push_back("1");
parameterValues.back().push_back("150");
}
QString RegrRVM::GetAlgoString()
{
float svmP = params->svmPSpin->value();
int kernelType = params->kernelTypeCombo->currentIndex();
float kernelGamma = params->kernelWidthSpin->value();
float kernelDegree = params->kernelDegSpin->value();
QString algo = QString("RVM %1").arg(svmP);
switch(kernelType)
{
case 0:
algo += " L";
break;
case 1:
algo += QString(" P %1").arg(kernelDegree);
break;
case 2:
algo += QString(" R %1").arg(kernelGamma);
break;
}
return algo;
}
Regressor *RegrRVM::GetRegressor()
{
Regressor *regressor = new RegressorRVM();
SetParams(regressor);
return regressor;
}
void RegrRVM::DrawInfo(Canvas *canvas, QPainter &painter, Regressor *regressor)
{
painter.setRenderHint(QPainter::Antialiasing);
int xIndex = canvas->xIndex;
int yIndex = canvas->yIndex;
vector<fvec> sv = ((RegressorRVM*)regressor)->GetSVs();
int radius = 9;
painter.setBrush(Qt::NoBrush);
FOR(i, sv.size())
{
QPointF point = canvas->toCanvasCoords(sv[i]);
painter.setPen(QPen(Qt::black,6));
painter.drawEllipse(point, radius, radius);
painter.setPen(QPen(Qt::white,3));
painter.drawEllipse(point, radius, radius);
}
}
void RegrRVM::DrawConfidence(Canvas *canvas, Regressor *regressor)
{
canvas->maps.confidence = QPixmap();
}
void RegrRVM::DrawModel(Canvas *canvas, QPainter &painter, Regressor *regressor)
{
painter.setRenderHint(QPainter::Antialiasing, true);
int w = canvas->width();
int h = canvas->height();
int xIndex = canvas->xIndex;
fvec sample = canvas->toSampleCoords(0,0);
int dim = sample.size();
if(dim > 2) return;
canvas->maps.confidence = QPixmap();
int steps = w;
QPainterPath path;
FOR(x, steps)
{
sample = canvas->toSampleCoords(x,0);
fvec res = regressor->Test(sample);
if(res[0] != res[0]) continue;
QPointF point = canvas->toCanvasCoords(sample[xIndex], res[0]);
if(x)
{
path.lineTo(point);
}
else path.moveTo(point);
}
painter.setPen(QPen(Qt::black, 1));
painter.drawPath(path);
}
void RegrRVM::SaveOptions(QSettings &settings)
{
settings.setValue("svmP", params->svmPSpin->value());
settings.setValue("kernelDeg", params->kernelDegSpin->value());
settings.setValue("kernelType", params->kernelTypeCombo->currentIndex());
settings.setValue("kernelWidth", params->kernelWidthSpin->value());
}
bool RegrRVM::LoadOptions(QSettings &settings)
{
if(settings.contains("svmP")) params->svmPSpin->setValue(settings.value("svmP").toFloat());
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());
ChangeOptions();
return true;
}
void RegrRVM::SaveParams(QTextStream &file)
{
file << "regressionOptions" << ":" << "svmP" << " " << params->svmPSpin->value() << "\n";
file << "regressionOptions" << ":" << "kernelDeg" << " " << params->kernelDegSpin->value() << "\n";
file << "regressionOptions" << ":" << "kernelType" << " " << params->kernelTypeCombo->currentIndex() << "\n";
file << "regressionOptions" << ":" << "kernelWidth" << " " << params->kernelWidthSpin->value() << "\n";
}
bool RegrRVM::LoadParams(QString name, float value)
{
if(name.endsWith("svmP")) params->svmPSpin->setValue(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);
ChangeOptions();
return true;
}
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