Returns the objective function associated with the algorithm that computed the fitted NMF model object, or the objective value with respect to a given target matrix y if it is supplied.

Description

Returns the objective function associated with the algorithm that computed the fitted NMF model object, or the objective value with respect to a given target matrix y if it is supplied.

Usage

S4 (NMFfit)
`objective`(object, y)

Arguments

y
optional target matrix used to compute the objective value.
object
an object computed using some algorithm, or that describes an algorithm itself.