double[] expArray = ArrayUtils.toPrimitive(expScores.toArray(new Double[expScores.size()]));
double[] gsArray = ArrayUtils.toPrimitive(gsScores.toArray(new Double[gsScores.size()]));
PearsonsCorrelation pearson = new PearsonsCorrelation();
Double correl = pearson.correlation(expArray, gsArray);
FileUtils.writeStringToFile(
new File(OUTPUT_DIR + "/" + mode.toString().toLowerCase() + "/" + dataset.toString() + ".txt"),
correl.toString());
}