private StringBuilder stats(StringBuilder sb, JsonElement json) { if (json == null) { return sb.append(" / / "); } else { JsonObject obj = json.getAsJsonObject(); return sb.append( String.format( "%4.1f / %4.1f / %4.1f", obj.get(MIN).getAsDouble(), obj.get(MAX).getAsDouble(), obj.get(MEAN).getAsDouble())); } }
@Override public String build(Response response, JsonObject t, String contextName) { int n = t.get(Constants.TREE_COUNT).getAsInt(); StringBuilder sb = new StringBuilder(); if (n > 0) { sb.append("<h3>Trees</h3>"); sb.append(t.get(Constants.TREE_COUNT)).append(" trees with min/max/mean depth of "); stats(sb, t.get(TREE_DEPTH)).append(" and leaf of "); stats(sb, t.get(TREE_LEAVES)).append(".<br>"); for (int i = 0; i < n; ++i) { sb.append( RFTreeView.link(_modelKey.value(), i, _dataKey.value(), Integer.toString(i + 1))) .append(" "); } } else { sb.append("<h3>No trees yet...</h3>"); } return sb.toString(); }
@Override public String build(Response response, JsonObject cm, String contextName) { StringBuilder sb = new StringBuilder(); if (cm.has(JSON_CM_MATRIX)) { sb.append("<h3>Confusion matrix - ") .append(cm.get(JSON_CM_TYPE).getAsString()) .append("</h3>"); sb.append("<dl class='dl-horizontal'>"); sb.append("<dt>classification error</dt><dd>") .append(String.format("%5.3f %%", 100 * cm.get(JSON_CM_CLASS_ERR).getAsFloat())) .append("</dd>"); long rows = cm.get(JSON_CM_ROWS).getAsLong(); long skippedRows = cm.get(JSON_CM_ROWS_SKIPPED).getAsLong(); sb.append("<dt>used / skipped rows </dt><dd>") .append( String.format( "%d / %d (%3.1f %%)", rows, skippedRows, (double) skippedRows * 100 / (skippedRows + rows))) .append("</dd>"); sb.append("<dt>trees used</dt><dd>" + cm.get(JSON_CM_TREES).getAsInt()).append("</dd>"); sb.append("</dl>"); sb.append("<table class='table table-striped table-bordered table-condensed'>"); sb.append("<tr><th>Actual \\ Predicted</th>"); JsonArray header = (JsonArray) cm.get(JSON_CM_HEADER); for (JsonElement e : header) sb.append("<th>" + e.getAsString() + "</th>"); sb.append("<th>Error</th></tr>"); int classes = header.size(); long[] totals = new long[classes]; JsonArray matrix = (JsonArray) cm.get(JSON_CM_MATRIX); long sumTotal = 0; long sumError = 0; for (int crow = 0; crow < classes; ++crow) { JsonArray row = (JsonArray) matrix.get(crow); long total = 0; long error = 0; sb.append("<tr><th>" + header.get(crow).getAsString() + "</th>"); for (int ccol = 0; ccol < classes; ++ccol) { long num = row.get(ccol).getAsLong(); total += num; totals[ccol] += num; if (ccol == crow) { sb.append("<td style='background-color:LightGreen'>"); } else { sb.append("<td>"); error += num; } sb.append(num); sb.append("</td>"); } sb.append("<td>"); sb.append(String.format("%5.3f = %d / %d", (double) error / total, error, total)); sb.append("</td></tr>"); sumTotal += total; sumError += error; } sb.append("<tr><th>Totals</th>"); for (int i = 0; i < totals.length; ++i) sb.append("<td>" + totals[i] + "</td>"); sb.append("<td><b>"); sb.append( String.format("%5.3f = %d / %d", (double) sumError / sumTotal, sumError, sumTotal)); sb.append("</b></td></tr>"); sb.append("</table>"); } else { sb.append("<div class='alert alert-info'>"); sb.append("Confusion matrix is being computed into the key:</br>"); sb.append(cm.get(JSON_CONFUSION_KEY).getAsString()); sb.append("</div>"); } return sb.toString(); }