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Diffstat (limited to 'addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/visualizers/visunproj/EvaluationVisualization.java')
-rw-r--r-- | addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/visualizers/visunproj/EvaluationVisualization.java | 216 |
1 files changed, 216 insertions, 0 deletions
diff --git a/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/visualizers/visunproj/EvaluationVisualization.java b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/visualizers/visunproj/EvaluationVisualization.java new file mode 100644 index 00000000..b378c71a --- /dev/null +++ b/addons/batikvis/src/main/java/de/lmu/ifi/dbs/elki/visualization/visualizers/visunproj/EvaluationVisualization.java @@ -0,0 +1,216 @@ +package de.lmu.ifi.dbs.elki.visualization.visualizers.visunproj; + +/* + This file is part of ELKI: + Environment for Developing KDD-Applications Supported by Index-Structures + + Copyright (C) 2015 + Ludwig-Maximilians-Universität München + Lehr- und Forschungseinheit für Datenbanksysteme + ELKI Development Team + + This program is free software: you can redistribute it and/or modify + it under the terms of the GNU Affero General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + 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 Affero General Public License for more details. + + You should have received a copy of the GNU Affero General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. + */ + +import org.apache.batik.util.SVGConstants; +import org.w3c.dom.Element; + +import de.lmu.ifi.dbs.elki.data.Clustering; +import de.lmu.ifi.dbs.elki.result.EvaluationResult; +import de.lmu.ifi.dbs.elki.result.Result; +import de.lmu.ifi.dbs.elki.utilities.FormatUtil; +import de.lmu.ifi.dbs.elki.utilities.datastructures.hierarchy.Hierarchy; +import de.lmu.ifi.dbs.elki.utilities.datastructures.hierarchy.Hierarchy.Iter; +import de.lmu.ifi.dbs.elki.visualization.VisualizationTask; +import de.lmu.ifi.dbs.elki.visualization.VisualizationTree; +import de.lmu.ifi.dbs.elki.visualization.VisualizerContext; +import de.lmu.ifi.dbs.elki.visualization.gui.VisualizationPlot; +import de.lmu.ifi.dbs.elki.visualization.projections.Projection; +import de.lmu.ifi.dbs.elki.visualization.style.ClusterStylingPolicy; +import de.lmu.ifi.dbs.elki.visualization.style.StyleLibrary; +import de.lmu.ifi.dbs.elki.visualization.style.StylingPolicy; +import de.lmu.ifi.dbs.elki.visualization.svg.SVGPlot; +import de.lmu.ifi.dbs.elki.visualization.svg.SVGScoreBar; +import de.lmu.ifi.dbs.elki.visualization.svg.SVGUtil; +import de.lmu.ifi.dbs.elki.visualization.visualizers.AbstractVisFactory; +import de.lmu.ifi.dbs.elki.visualization.visualizers.StaticVisualizationInstance; +import de.lmu.ifi.dbs.elki.visualization.visualizers.Visualization; + +/** + * Pseudo-Visualizer, that lists the cluster evaluation results found. + * + * TODO: add indication/warning when values are out-of-bounds. + * + * TODO: Find a nicer solution than the current hack to only display the + * evaluation results for the currently active clustering. + * + * @author Erich Schubert + * @author Sascha Goldhofer + * + * @apiviz.stereotype factory + * @apiviz.uses StaticVisualizationInstance oneway - - «create» + * @apiviz.has EvaluationResult oneway - - visualizes + */ +public class EvaluationVisualization extends AbstractVisFactory { + /** + * Name for this visualizer. + */ + private static final String NAME = "Evaluation Bar Chart"; + + /** + * Constant: width of score bars + */ + private static final double BARLENGTH = 5; + + /** + * Constant: height of score bars + */ + private static final double BARHEIGHT = 0.7; + + /** + * Constructor. + */ + public EvaluationVisualization() { + super(); + } + + @Override + public void processNewResult(VisualizerContext context, Object start) { + Hierarchy.Iter<EvaluationResult> it = VisualizationTree.filterResults(context, start, EvaluationResult.class); + candidate: for(; it.valid(); it.advance()) { + EvaluationResult sr = it.get(); + // Avoid duplicates: + Hierarchy.Iter<VisualizationTask> it2 = VisualizationTree.filter(context, sr, VisualizationTask.class); + for(; it2.valid(); it2.advance()) { + if(it2.get().getFactory() instanceof EvaluationVisualization) { + continue candidate; + } + } + // Hack: for clusterings, only show the currently visible clustering. + if(sr.visualizeSingleton()) { + Class<? extends EvaluationResult> c = sr.getClass(); + // Ensure singleton. + Hierarchy.Iter<?> it3 = context.getVisHierarchy().iterChildren(context.getBaseResult()); + for(; it3.valid(); it3.advance()) { + Object o = it3.get(); + if(!(o instanceof VisualizationTask)) { + continue; + } + final VisualizationTask otask = (VisualizationTask) o; + if(otask.getFactory() instanceof EvaluationVisualization && otask.getResult() == c) { + continue candidate; + } + } + final VisualizationTask task = new VisualizationTask(NAME, context, c, null, EvaluationVisualization.this); + task.reqwidth = .5; + task.reqheight = sr.numLines() * .05; + task.level = VisualizationTask.LEVEL_STATIC; + task.addUpdateFlags(VisualizationTask.ON_STYLEPOLICY); + context.addVis(context.getBaseResult(), task); + continue candidate; + } + final VisualizationTask task = new VisualizationTask(NAME, context, sr, null, EvaluationVisualization.this); + task.reqwidth = .5; + task.reqheight = sr.numLines() * .05; + task.level = VisualizationTask.LEVEL_STATIC; + context.addVis(sr, task); + } + } + + private double addBarChart(SVGPlot svgp, Element parent, double ypos, String label, double value, double minValue, double maxValue, double baseValue, boolean reversed) { + SVGScoreBar barchart = new SVGScoreBar(); + barchart.setFill(value, baseValue == baseValue ? baseValue : minValue, maxValue); + barchart.setReversed(reversed); + barchart.showValues(FormatUtil.NF4); + barchart.addLabel(label); + parent.appendChild(barchart.build(svgp, 0.0, ypos, BARLENGTH, BARHEIGHT)); + ypos += 1; + return ypos; + } + + private double addHeader(SVGPlot svgp, Element parent, double ypos, String text) { + ypos += .5; + Element object = svgp.svgText(0, ypos + BARHEIGHT * 0.5, text); + object.setAttribute(SVGConstants.SVG_STYLE_ATTRIBUTE, "font-size: 0.6; font-weight: bold"); + parent.appendChild(object); + ypos += 1; + return ypos; + } + + @Override + public Visualization makeVisualization(VisualizationTask task, VisualizationPlot plot, double width, double height, Projection proj) { + // TODO: make a utility class to wrap SVGPlot + parent layer + ypos. + // TODO: use CSSClass and StyleLibrary + + double ypos = -.5; // Skip space before first header + Element parent = plot.svgElement(SVGConstants.SVG_G_TAG); + Object o = task.getResult(); + EvaluationResult sr = null; + if(o instanceof EvaluationResult) { + sr = (EvaluationResult) o; + } + else if(o instanceof Class) { + // Use cluster evaluation of current style instead. + VisualizerContext context = task.getContext(); + StylingPolicy spol = context.getStylingPolicy(); + if(spol instanceof ClusterStylingPolicy) { + ClusterStylingPolicy cpol = (ClusterStylingPolicy) spol; + @SuppressWarnings("unchecked") + final Class<Object> c = (Class<Object>) o; + Iter<?> it = VisualizationTree.filterResults(context, cpol.getClustering(), c); + candidates: for(; it.valid(); it.advance()) { + // This could be attached to a child clustering, in which case we + // may end up displaying the wrong evaluation. + Iter<Result> it2 = context.getHierarchy().iterAncestors((EvaluationResult) it.get()); + for(; it2.valid(); it2.advance()) { + if(it2.get() instanceof Clustering && it2.get() != cpol.getClustering()) { + continue candidates; + } + } + sr = (EvaluationResult) it.get(); + break; + } + } + } + if(sr == null) { + return new StaticVisualizationInstance(task, plot, width, height, parent); // Failed. + } + + for(String header : sr.getHeaderLines()) { + ypos = addHeader(plot, parent, ypos, header); + } + + for(EvaluationResult.MeasurementGroup g : sr) { + ypos = addHeader(plot, parent, ypos, g.getName()); + for(EvaluationResult.Measurement m : g) { + ypos = addBarChart(plot, parent, ypos, m.getName(), m.getVal(), m.getMin(), m.getMax(), m.getExp(), m.lowerIsBetter()); + } + } + + // scale vis + double cols = 10; + final StyleLibrary style = task.getContext().getStyleLibrary(); + final double margin = style.getSize(StyleLibrary.MARGIN); + final String transform = SVGUtil.makeMarginTransform(width, height, cols, ypos, margin / StyleLibrary.SCALE); + SVGUtil.setAtt(parent, SVGConstants.SVG_TRANSFORM_ATTRIBUTE, transform); + + return new StaticVisualizationInstance(task, plot, width, height, parent); + } + + @Override + public boolean allowThumbnails(VisualizationTask task) { + // Don't use thumbnails + return false; + } +} |