List<AnnotationStatistics> foldStats = evaluation.crossValidation(trainFiles, 2);
//AnnotationStatistics overallStats = AnnotationStatistics.addAll(foldStats);
AnnotationStatistics overallStats = new AnnotationStatistics();
for (AnnotationStatistics singleFoldStats : foldStats)
{
overallStats.addAll(singleFoldStats);
}
System.err.println("overall:");
System.err.print(overallStats);
System.err.println(overallStats.confusions());