PoissonLoss | R Documentation |
Compute the weighted Poisson loss function, which is seg.mean
-
count
* log(seg.mean
). The edge case is when the mean is zero, in
which case the probability mass function takes a value of 1 when
the data is 0 (and 0 otherwise). Thus the log-likelihood of a
maximum likelihood segment with mean zero must be zero.
PoissonLoss(count, seg.mean,
weight = 1)
count |
count |
seg.mean |
seg.mean |
weight |
weight |
Toby Dylan Hocking, Guillem Rigaill
PoissonLoss(1, 1)
PoissonLoss(0, 0)
PoissonLoss(1, 0)
PoissonLoss(0, 1)
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