/*
* ARX: Powerful Data Anonymization
* Copyright 2012 - 2017 Fabian Prasser, Florian Kohlmayer and contributors
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.deidentifier.arx.gui.view.impl.menu;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import org.apache.commons.math3.analysis.function.Log;
import org.deidentifier.arx.DataGeneralizationScheme;
import org.deidentifier.arx.DataGeneralizationScheme.GeneralizationDegree;
import org.deidentifier.arx.gui.Controller;
import org.deidentifier.arx.gui.model.Model;
import org.deidentifier.arx.gui.model.ModelCriterion;
import org.deidentifier.arx.gui.model.ModelDifferentialPrivacyCriterion;
import org.deidentifier.arx.gui.resources.Resources;
import org.deidentifier.arx.gui.view.SWTUtil;
import org.eclipse.jface.window.Window;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.SelectionAdapter;
import org.eclipse.swt.events.SelectionEvent;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Combo;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Label;
import org.eclipse.swt.widgets.Text;
import de.linearbits.swt.widgets.Knob;
/**
* A view on an (e,d)-DP criterion.
*
* @author Fabian Prasser
*/
public class EditorCriterionDifferentialPrivacy extends EditorCriterion<ModelDifferentialPrivacyCriterion> {
/** View */
private Knob<Double> knobDelta;
/** View */
private Knob<Double> knobEpsilon;
/** View */
private Combo comboGeneralization;
/** View */
private Text labelEpsilon;
/** View */
private Text labelDelta;
/**
* Some epsilon values mentioned in "Practicing Differential Privacy in Health Care: A Review"
*/
private static final double[] EPSILONS = new double[] {
2d,
1.5d,
1.25d,
(new Log()).value(3),
1.0d,
0.75d,
(new Log()).value(2),
0.5d,
0.1d,
0.01d
};
/**
* Some delta values below the 1E-4d limit mentioned in "Practicing Differential Privacy in Health Care: A Review".
*/
private static final double[] DELTAS = new double[] { 1E-5d, 1E-6d, 1E-7d, 1E-8d, 1E-9d, 1E-10d };
/** Controller*/
private Controller controller;
/** Model*/
private Model arxmodel;
/**
* Creates a new instance.
*
* @param parent
* @param model
*/
public EditorCriterionDifferentialPrivacy(final Composite parent,
final ModelDifferentialPrivacyCriterion model,
final Controller controller,
final Model arxmodel) {
super(parent, model);
this.controller = controller;
this.arxmodel = arxmodel;
}
/**
* Returns a generalization degree
* @return
*/
private GeneralizationDegree getGeneralizationDegree(int index) {
return GeneralizationDegree.values()[index];
}
/**
* Returns a set of all generalization degrees
* @return
*/
private String[] getGeneralizationDegrees() {
List<String> result = new ArrayList<String>();
for (GeneralizationDegree degree : GeneralizationDegree.values()) {
String label = degree.toString().replace("_", "-").toLowerCase();
label = label.substring(0,1).toUpperCase() + label.substring(1);
result.add(label);
}
result.add("Custom...");
return result.toArray(new String[result.size()]);
}
/**
* Returns the according index
* @param generalization
* @return
*/
private int getIndexOfGeneralizationDegree(GeneralizationDegree generalization) {
int index = 0;
for (GeneralizationDegree degree : GeneralizationDegree.values()) {
if (degree == generalization) {
return index;
}
index ++;
}
return -1;
}
@Override
protected Composite build(Composite parent) {
// Create input group
final Composite group = new Composite(parent, SWT.NONE);
group.setLayoutData(SWTUtil.createFillHorizontallyGridData());
final GridLayout groupInputGridLayout = new GridLayout();
groupInputGridLayout.numColumns = 8;
group.setLayout(groupInputGridLayout);
// Create epsilon slider
final Label zLabel = new Label(group, SWT.NONE);
zLabel.setText(Resources.getMessage("CriterionDefinitionView.92")); //$NON-NLS-1$
labelEpsilon = createLabel(group);
knobEpsilon = createKnobDouble(group, 0.01d, 2d);
updateLabel(labelEpsilon, knobEpsilon.getValue()); //$NON-NLS-1$
knobEpsilon.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent arg0) {
model.setEpsilon(knobEpsilon.getValue());
updateLabel(labelEpsilon, model.getEpsilon());
}
});
// Create delta slider
final Label lLabel = new Label(group, SWT.NONE);
lLabel.setText(Resources.getMessage("CriterionDefinitionView.93")); //$NON-NLS-1$
labelDelta = createLabel(group);
knobDelta = createKnobDouble(group, 0.00000000001d, 0.00001d);
updateLabel(labelDelta, knobDelta.getValue());
knobDelta.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent arg0) {
model.setDelta(knobDelta.getValue());
updateLabel(labelDelta, model.getDelta());
}
});
// Create criterion combo
final Label cLabel = new Label(group, SWT.PUSH);
cLabel.setText(Resources.getMessage("CriterionDefinitionView.94")); //$NON-NLS-1$
comboGeneralization = new Combo(group, SWT.READ_ONLY);
GridData d31 = SWTUtil.createFillHorizontallyGridData();
d31.verticalAlignment = SWT.CENTER;
d31.horizontalSpan = 1;
comboGeneralization.setLayoutData(d31);
comboGeneralization.setItems(getGeneralizationDegrees());
comboGeneralization.select(0);
comboGeneralization.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(final SelectionEvent arg0) {
int index = comboGeneralization.getSelectionIndex();
if (index == comboGeneralization.getItemCount()-1) {
DialogGeneralizationSelection dialog = new DialogGeneralizationSelection(comboGeneralization.getShell(),
controller,
arxmodel,
model.getGeneralization());
dialog.create();
if (dialog.open() == Window.OK) {
DataGeneralizationScheme generalization = DataGeneralizationScheme.create();
Map<String, Integer> scheme = dialog.getSelection();
for (Entry<String, Integer> entry : scheme.entrySet()){
generalization.generalize(entry.getKey(), entry.getValue());
}
model.setGeneralization(generalization);
}
} else if (index != -1) {
model.setGeneralization(DataGeneralizationScheme.create(getGeneralizationDegree(index)));
}
}
});
return group;
}
@Override
protected List<ModelCriterion> getTypicalParameters() {
List<ModelCriterion> result = new ArrayList<ModelCriterion>();
for (double delta : DELTAS) {
for (double epsilon : EPSILONS) {
result.add(new ModelDifferentialPrivacyCriterion(epsilon, delta));
}
}
return result;
}
@Override
protected void parse(ModelDifferentialPrivacyCriterion model, boolean _default) {
updateLabel(labelEpsilon, model.getEpsilon());
updateLabel(labelDelta, model.getDelta());
knobDelta.setValue(model.getDelta());
knobEpsilon.setValue(model.getEpsilon());
if (!_default) {
int index = getIndexOfGeneralizationDegree(model.getGeneralization().getGeneralizationDegree());
if (index != -1) {
comboGeneralization.select(index);
} else {
comboGeneralization.select(comboGeneralization.getItemCount() - 1);
}
}
}
}