Build Gram for between-class Laplacian using label factors.

Z^T L_d Z = Z^T D_d Z + (Z^T C)(Z^T C)^T - (Z^T ell)(Z^T ell)^T

Usage

gram_Ld(Zop, F)

Arguments

Zop

Operator for kernel blocks.

F

Label factor list.

Value

Symmetric dense matrix.

Examples

# \donttest{
library(Matrix)
K1 <- Matrix(rnorm(20), 10, 2)
Zop <- make_Zop_from_Ks(list(K1))
# F <- label_factors(...)  # Requires label factors
# G <- gram_Ld(Zop, F)
# }