private Node getReferenceTable(Results r) {
String[] subH = new String[r.getNumberOfClusters()];
for (int i = 0; i < subH.length; i++) subH[i] = "Cluster " + i;
DataTable refTable = new DataTable();
refTable.addHiddenClusterHeaders(subH);
// Fetch the reference labels
String[] refLabels = r.getReferenceLabels();
refTable.setLabelRowRelationship(getReferenceRowRelationship(refLabels));
refTable.setTotalLabelCount(mRefLabelToRow.size());
// For each cluster, we add the reference data means as labels, and link that data to the
// corresponding label
double[][] refMeans = r.getReferenceDataMeans();
for (int col = 0; col < r.getNumberOfClusters(); col++) {
ArrayList<Pair<String, String>> pairs = new ArrayList<Pair<String, String>>();
double[] thisCol = refMeans[col];
for (int j = 0; j < refLabels.length; j++) {
Pair<String, String> pair =
new Pair<String, String>(refLabels[j], String.valueOf(thisCol[j]));
pairs.add(pair);
}
refTable.setColumnData(col, mRefLabelToRow.size(), pairs);
}
mRefDataTables.add(refTable);
return refTable;
}
private Node getDataTable(Results r, Pane pane) {
// The grid part contains the cluster's centoid data, as well as the "X" button
String[] subH = new String[r.getNumberOfClusters()];
for (int i = 0; i < subH.length; i++) subH[i] = "Cluster " + i;
DataTable dataTable = new DataTable("Run " + mNextRun++, subH);
// Fetch the labels. Inform the data table of the label-row relationships
String[] labels = r.getLabels();
dataTable.setLabelRowRelationship(getLabelRowRelationship(labels));
dataTable.setTotalLabelCount(mDataLabelToRow.size());
// For each cluster, we create a list of Label - Data pairs, where the label denotes what
// feature we are looking at
// and the Data represents that clusters centoid for the current feature
for (int col = 0; col < r.getNumberOfClusters(); col++) {
ArrayList<Pair<String, String>> labelDataPairs = new ArrayList<Pair<String, String>>();
double[] clusterCentoid = r.getCentoid(col);
for (int j = 0; j < labels.length; j++) {
Pair<String, String> pair =
new Pair<String, String>(labels[j], String.valueOf(clusterCentoid[j]));
labelDataPairs.add(pair);
}
dataTable.setColumnData(col, mDataLabelToRow.size(), labelDataPairs);
}
dataTable.addCloseButton(pane);
mDataTables.add(dataTable);
return dataTable;
}
private Integer addNewRefLabel(String currLabel) {
// Register a new relationship within this tab
mRefLabelToRow.put(currLabel, mNextRefLabelIndex);
// Paint the new label at the bottom of the reference label table
mRefLabelTable.appendText(currLabel);
// Add empty spaces to all other ref data tables
for (DataTable t : mRefDataTables) t.addEmptyRow();
return mNextRefLabelIndex++;
}
private int addNewDataLabel(String label) {
// Register a new relationship within this tab
mDataLabelToRow.put(label, mNextLabelIndex);
// Paint the new label at the bottom of the label table
mLabelTable.appendText(label);
// Add empty spaces to all other data tables
for (DataTable t : mDataTables) t.addEmptyRow();
return mNextLabelIndex++;
}
/**
* Creates labels with the squared error sums for the different clusters, as well as creates one
* total squared error, which is the sum of the squared error from the different clusters
*
* @param r
* @return
*/
private ArrayList<Label> getSquaredErrors(Results r) {
ArrayList<Label> errorLabels = new ArrayList<>();
double[] errors = r.getSquaredErrors();
double totalErrors = 0;
errorLabels.add(new Label(" ")); // Adds an empty row
// Calculate the number of digits in the largest error.
// This'll be used to place the numbers in the labels correctly
double largestNr = 0;
for (double d : errors) {
if (Math.abs(d) > largestNr) largestNr = Math.abs(d);
}
int offset = (int) (Math.log10(largestNr) + 6);
for (int i = 0; i < errors.length; i++) {
Label label = new Label(String.format("SSE Clu" + i + ": %" + offset + ".4f", errors[i]));
DataTable.skinDataLabel(label);
totalErrors += errors[i];
errorLabels.add(label);
}
Label blank = new Label(" ");
Label total = new Label("Total SSE");
Label val = new Label(String.format("%.4f", totalErrors));
total.setStyle("-fx-underline: true;");
DataTable.skinDataLabel(blank);
DataTable.skinDataLabel(total);
DataTable.skinDataLabel(val);
errorLabels.add(blank);
errorLabels.add(total);
errorLabels.add(val);
return errorLabels;
}
private ArrayList<Label> getMiscDataLabels(Results r) {
ArrayList<Label> miscDataLabels = new ArrayList<>();
ArrayList<Pair<String, Double>> miscData = r.getMiscData();
miscDataLabels.add(new Label(" ")); // Adds an empty row
for (int i = 0; i < miscData.size(); i++) {
Pair<String, Double> data = miscData.get(i);
Label label = new Label(data.left + ": " + data.right);
DataTable.skinDataLabel(label);
miscDataLabels.add(label);
}
return miscDataLabels;
}
/** Creates the basic layout, with the left label grid and the similar */
private void createBaseLayout() {
label_box = new VBox();
wrap_pane.getChildren().add(label_box);
mLabelTable =
new DataTable(
" ",
" "); // We want the extra spacing that having a heading gives, to keep in line with the
// data labels
mRefLabelTable = new DataTable();
mRefLabelTable.addHiddenClusterHeaders(" ");
label_box.getChildren().add(mLabelTable);
label_box.getChildren().add(mRefLabelTable);
wrap_pane.setMinWidth(1);
addVerticalSeparator();
first = false;
}