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Dr. Feng Li

{ computing, forecasting and learning with massive machines }

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Category: Default

A fast routine of making a commutation matrix

R does not have this function by default, so I wrote a faster routine K() to create a commutation matrix.We always use the notation of commutation matrix on the paper. But when we put it into practice, we typically need the result of a dense matrix by pre- or post-multiplied by a commutation matrix. i.e.,… Continue reading A fast routine of making a commutation matrix

Published December 2, 2012
Categorized as Default, R

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Dr. Feng Li
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