Description Usage Arguments Value Examples
The function smoothing
builds a smoothing matrix for using in Nonsmooth
NMF models.
For a r-rank NMF, the smoothing matrix of parameter θ is built as follows:
S = (1-θ)I + \frac{θ}{r} 11^T ,
where I is the identity matrix and 1 is a vector of ones
(cf. NMFns-class
for more details).
1 |
x |
a object of class |
theta |
the smoothing parameter (numeric) between 0 and 1. |
... |
extra arguments to allow extension (not used) |
if x
estimates a r-rank NMF,
then the result is a r \times r square matrix.
1 2 3 |
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