ramhiser / paper-hdrda

High-Dimensional Regularized Discriminant Analysis
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Update \oplus notation to 2x2 block-diagonal #27

Closed ramhiser closed 7 years ago

ramhiser commented 8 years ago

The \oplus notation used in the paper is less conventional and may be a bit confusing. Instead, we'll switch to 2x2 block-diagonal matrices.

For example, in equation 10, we use the notation W_k \oplus \gamma I_{p-q}. Instead, we should replace this with:

\begin{bmatrix}
W_k & 0 \\
0 & \gamma I_{p-q}
\end{bmatrix}

The results will be more intelligible. It will take a bit of effort though to ensure that no orphan notation is introduced.