Larger prediction window

[AlexanderGeiger]

In the original implementation a prediction window of size 10 is used. However, only the first value of that prediction sequence is used for the error calculation. I am not sure if it was done intentionally (instead of using a prediction window of size 1). This predicted values of both methods differ a bit, however the overall score is not affected much, likely because the predictions and thus also the errors are changed throughout the signal, resulting in a similar (but in general a bit higher) error curve, to which the threshold is applied. So I am not sure if we need to implement that in our pipeline at the moment.