Smoothing Matrix in Nonsmooth NMF Models
The function smoothing builds a smoothing matrix
for using in Nonsmooth NMF models.
smoothing(x, theta = x@theta, ...)
x |
a object of class |
theta |
the smoothing parameter (numeric) between 0 and 1. |
... |
extra arguments to allow extension (not used) |
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).
if x estimates a r-rank NMF, then the result
is a r \times r square matrix.
x <- nmfModel(3, model='NMFns') smoothing(x) smoothing(x, 0.1)
Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.