get_U {lgspline} | R Documentation |
Efficiently Construct U Matrix
Description
Efficiently Construct U Matrix
Usage
get_U(G, A, K, nc, nca)
Arguments
G |
List of G matrices ( |
A |
Constraint matrix ( |
K |
Number of partitions minus 1 ( |
nc |
Number of columns per partition |
nca |
Number of constraint columns |
Details
Computes \textbf{U} = \textbf{I} - \textbf{G}\textbf{A}(\textbf{A}^{T}\textbf{G}\textbf{A})^{-1}\textbf{A}^{T}
efficiently, avoiding unnecessary
multiplication of blocks of \textbf{G}
with all-0 elements.
Value
\textbf{U}
matrix for constraints
[Package lgspline version 0.2.0 Index]