buildReverse | R Documentation |
Builds a map from pairs of labels to indexes. This is
for caching distances, to avoid recomputing Hamming distances
especially when dealing with high-dimensional (large P
) matrices.
buildReverse(N)
N |
Sample size, i.e., nrow( |
Dependencies: None
N \times N
matrix whose entries record the index
corresponding to the pair of labels (indexed by the matrix dims)
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