Description Usage Arguments Details See Also
View source: R/validating_jack.R
Take a numeric vector and return the predicted vector computed as the arithmetic mean of all elements belonging to a same assembly motif.
1 | amean_byelt_jack(fobs, mOccur, jack)
|
fobs |
a numeric vector. The vector |
mOccur |
a matrix of occurrence (occurrence of elements).
Its first dimension equals to |
jack |
an integer vector of length |
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 a subset of assemblages.
This procedure corresponds to a linear model with each assembly motif
based on the element occurrence in each assemblage.
The assemblages belonging to a same assembly motif are divided
into jack[2]
subsets of jack[1]
assemblages.
Prediction is computed by excluding jack[1]
assemblages,
including the assemblage to predict.
If the total number of assemblages belonging
to the assembly motif is lower than jack[1]*jack[2]
,
prediction is computed by leave-one-out (LOO).
amean_bymot_jack
,
gmean_bymot_jack
,
gmean_byelt_jack
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