Hi,
Whilst reading a paper I have come across some notation I am unfamiliar
with. Could someone please explain what
W(. , Z) and / or W(Z, .)
stands for when W and Z are matrices, with
W = (X' R- X X' R- Z X' R- y)
(Z' R- X Z' R- Z Z' R- y)
(y' R- X y' R- Z y' R- y)
and R- = inverse of R.
Thanks
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