Class "SparseplusLowRank"

Description

A structured matrix made up of a sparse part plus a low-rank part, all which can be stored and operated on efficiently.

Objects from the Class

Objects can be created by calls of the form new("SparseplusLowRank", ...) or by a call to splr

Slots

x:

Object of class "sparseMatrix"

a:

Object of class "matrix"

b:

Object of class "matrix"

Methods

%*%

signature(x = "ANY", y = "SparseplusLowRank"): ...

%*%

signature(x = "SparseplusLowRank", y = "ANY"): ...

%*%

signature(x = "Matrix", y = "SparseplusLowRank"): ...

%*%

signature(x = "SparseplusLowRank", y = "Matrix"): ...

as.matrix

signature(x = "SparseplusLowRank"): ...

colMeans

signature(x = "SparseplusLowRank"): ...

colSums

signature(x = "SparseplusLowRank"): ...

dim

signature(x = "SparseplusLowRank"): ...

norm

signature(x = "SparseplusLowRank", type = "character"): ...

rowMeans

signature(x = "SparseplusLowRank"): ...

rowSums

signature(x = "SparseplusLowRank"): ...

svd.als

signature(x = "SparseplusLowRank"): ...

Author(s)

Trevor Hastie and Rahul Mazumder

See Also

softImpute,splr

Examples

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showClass("SparseplusLowRank")
x=matrix(sample(c(3,0),15,replace=TRUE),5,3)
x=as(x,"sparseMatrix")
a=matrix(rnorm(10),5,2)
b=matrix(rnorm(6),3,2)
new("SparseplusLowRank",x=x,a=a,b=b)
splr(x,a,b)