Least power norm (Lp): To determine how well the
curves overlapped spatially the least power norm (Lp)
(Callegaro et al., 2009) [equation 10] was used. Choosing
different p values can alter the ranking strategy. If interest
is focused on the overall difference between curves, it is
appropriate to take small p values. Otherwise, higher p
values are more appropriate for study of outliers or small
sections of the curve. In present study we were interested
in the compliance of curves for the whole lactation,
therefore we took the value of p = 1.
Small Lp values indicate a good spatial overlap
for the whole standard lactation period. The Lp norms
were calculated from normalized absolute differences
[equation 10]. Lp values close to zero indicate good
spatial overlap, and higher values mean that the curves
differ from each other. Despite the fact that there is no
real upper limit of Lp value, the expected values are i