sparsity {pcpr} | R Documentation |
Estimate sparsity of given matrix
Description
sparsity()
estimates the percentage of entries in a given data matrix D
whose values are "practically zero". If the absolute value of an entry is
below a given threshold parameter thresh
, then that value is determined
to be "practically zero", increasing the estimated sparsity of D
. Note
that NA
values are imputed as 0 before the sparsity calculation is made.
Usage
sparsity(D, thresh = 1e-04)
Arguments
D |
The input data matrix. |
thresh |
(Optional) A numeric threshold |
Value
The sparsity of D
, measured as the percentage of entries in D
that are "practically zero".
See Also
Examples
sparsity(matrix(rep(c(1, 0), 8), 4, 4))
sparsity(matrix(0:8, 3, 3))
sparsity(matrix(0, 3, 3))
[Package pcpr version 1.0.0 Index]