[R] detecting non-singular square sub-matrices in rectangular matrice s.
Hadfield, Jarrod
jarrod.hadfield at imperial.ac.uk
Wed Jan 28 14:13:47 CET 2004
Dear All,
I was wondering whether anyone knew of an efficient way of testing
whether a non-singular square sub matrix of dimensions p X p exists
within a rectangular matrix of dimensions p x m. Typically, p will
be about 4, and m several thousand so an exhaustive test of all
possible sub matrices would be prohibitive when dealing with a large
number of rectangular matrices.
Thanks for any suggestions,
Jarrod.
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