private void updateInstanceAndPutInField(
Instance instance, int correctClass, int predictedClassIndex) {
Segment segment = toSegment(instance);
String classAsString = instance.classAttribute().value(predictedClassIndex);
int predictedLabelId = Integer.parseInt(classAsString);
segment.setPredictedLabelDetail(labelMapReader.getSchema().get(predictedLabelId));
putInField(segment, correctClass, predictedClassIndex);
}
private String getHeaders(List<Segment> segments) {
if (segments.size() == 0) {
return "";
}
Segment segment = segments.get(0);
StringBuilder output = new StringBuilder();
output.append("device_info_serial,");
output.append("date_time,");
output.append("lon,");
output.append("lat,");
output.append("alt,");
output.append("class_id,");
for (String feature : segment.getFeatureNames()) {
output.append(feature + ",");
}
output.append("set\n");
return output.toString();
}
private String getCsv(List<Segment> segments, String set) {
StringBuilder output = new StringBuilder();
for (Segment segment : segments) {
output.append(segment.getDeviceId() + ",");
output.append(segment.getTimeStamp().toString(Constants.DATE_TIME_PATTERN_ISO8601) + ",");
output.append(segment.getLongitude() + ",");
output.append(segment.getLatitude() + ",");
output.append(segment.getAltitude() + ",");
output.append(segment.getLabel() + ",");
for (double feature : segment.getFeatures()) {
output.append(feature + ",");
}
output.append(set + "\n");
}
return output.toString();
}