Take a vector fobs of assembly performances
over several experiments,
and return a vector of performances
predicted as the arithmetic mean
of performances of all assemblages
that share a same assembly motif,
by excluding the assemblage to predict.
validate_amean_byelt_LOO_xpr(fobs, assMotif, mOccur, xpr)a numeric vector. The vector fobs contains the
quantitative performances of assemblages.
a vector of labels of length(fobs).
The vector assMotif contains the assembly motifs 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.
a vector of numerics of length(fobs).
The vector xpr contains the weight of each experiment,
and the labels (in names(xpr)) of different experiments.
The weigth of each experiment is used
in the computation of the Residual Sum of Squares
in the function rss_clustering.
The used formula is rss
if each experiment has the same weight.
The used formula is wrss
(barycenter of RSS for each experiment)
if each experiment has different weights.
All assemblages that belong to a given experiment
should then have a same weigth.
Each experiment is identified by its names (names(xpr))
and the RSS of each experiment is weighted by values of xpr.
The vector is generated
by the function stats::setNames.
Return a vector of same length as fobs, of
which values are computed as an arithmetic mean.
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,
experiment by experiment,
except the assemblage to predict.
This procedure corresponds to a linear model with each assembly motif
based on the element occurrence in each assemblage.
validate_amean_bymot_LOO_xpr arithmetic mean
by assembly motif
validate_gmean_bymot_LOO_xpr geometric mean
by assembly motif
validate_gmean_byelt_LOO_xpr geometric mean
by elements occurring within assembly motif