Testing Equality of NMF Models
The function nmf.equal tests if two NMF models are
the same, i.e. they contain – almost – identical data:
same basis and coefficient matrices, as well as same
extra parameters.
nmf.equal(x, y, ...)
## S4 method for signature 'NMF,NMF'
nmf.equal(x, y, identical = TRUE,
...)
## S4 method for signature 'list,list'
nmf.equal(x, y, ..., all = FALSE,
vector = FALSE)x |
an NMF model or an object that is associated
with an NMF model, e.g. the result from a fit with
|
y |
an NMF model or an object that is associated
with an NMF model, e.g. the result from a fit with
|
identical |
a logical that indicates if the
comparison should be made using the function
|
... |
extra arguments to allow extension, and passed to subsequent calls |
all |
a logical that indicates if all fits should be compared separately or only the best fits |
vector |
a logical, only used when |
nmf.equal compares two NMF models, and return
TRUE iff they are identical acording to the
function identical when
identical=TRUE, or equal up to some tolerance
acording to the function all.equal. This
means that all data contained in the objects are
compared, which includes at least the basis and
coefficient matrices, as well as the extra parameters
stored in slot ‘misc’.
If extra arguments are specified in ..., then the
comparison is performed using all.equal,
irrespective of the value of argument identical.
signature(x = "NMF", y = "NMF"):
Compares two NMF models.
Arguments in ... are used only when
identical=FALSE and are passed to
all.equal.
signature(x = "NMFfit", y =
"NMF"): Compares two NMF models when at least one comes
from a NMFfit object, i.e. an object returned by a single
run of nmf.
signature(x = "NMF", y =
"NMFfit"): Compares two NMF models when at least one
comes from a NMFfit object, i.e. an object returned by a
single run of nmf.
signature(x = "NMFfit", y =
"NMFfit"): Compares two fitted NMF models, i.e. objects
returned by single runs of nmf.
signature(x = "NMFfitX", y =
"NMF"): Compares two NMF models when at least one comes
from multiple NMF runs.
signature(x = "NMF", y =
"NMFfitX"): Compares two NMF models when at least one
comes from multiple NMF runs.
signature(x = "NMFfitX1", y =
"NMFfitX1"): Compares the NMF models fitted by multiple
runs, that only kept the best fits.
signature(x = "list", y =
"list"): Compares the results of multiple NMF runs.
This method either compare the two best fit, or all fits
separately. All extra arguments in ... are passed
to each internal call to nmf.equal.
signature(x = "list", y =
"missing"): Compare all elements in x to
x[[1]].
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