Take a vector fobs
of performances of assemblages
that share a same assembly motif,
and return a vector of performances
predicted as the arithmetic mean
of performances of assemblages
that contain the same elements as the assemblage to predict.
All assemblages share the same assembly motif.
amean_byelt_LOO(fobs, mOccur)a numeric vector. The vector fobs contains the
quantitative performances of assemblages.
a matrix of occurrence (occurrence of elements).
Its first dimension equals to length(fobs). Its second dimension
equals to the number of elements.
Return a vector of length(fobs).
Its values are computed as the average
of mean performances of assemblages
that share the same assembly motif
and that contain the same elements
as the assemblage to predict opt.model = "byelt" .
Modelled performances are computed
using arithmetic mean opt.mean = "amean" of performances.
Assemblages share a same assembly motif opt.model = "bymot".
Modelled performances are the average
of mean performances of assemblages that contain the same elements
as the assemblage to predict,
except the assemblage to predict.
This procedure corresponds to a linear model with each assembly motif
based on the element occurrence in each assemblage.
amean_bymot_LOO arithmetic mean
by assembly motif
gmean_bymot_LOO geometric mean
by assembly motif
gmean_byelt_LOO geometric mean
by elements occurring within assembly motif