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Total 2 documents matching your query.

1. Matrix row multiplication with a quick dos.time? (score: 1)
Author: Adam Brentnall <a.r.brentnall@maths.soton.ac.uk>
Date: Wed, 25 Feb 2004 16:13:12 +0000
Dear users of S-news As part of a function I would like to calculate transpose(A) %*% A so that the first row of transpose(A) is matched with the 1st row of A. The second row of Transpose(A) is match
/archives/html/s-news/2004-02/msg00211.html (8,318 bytes)

2. Solutions to: Matrix row multiplication with a quick dos.time? (score: 1)
Author: Adam Brentnall <a.r.brentnall@maths.soton.ac.uk>
Date: Wed, 25 Feb 2004 17:39:12 +0000
Dear users of S-news: Two better ways of dealing with the problem have been suggested: 4. rowSums / colSums e.g. colSums(A*A) or rowSums(t(A)^2) Dos time of function = 0.531s This was suggested by (i
/archives/html/s-news/2004-02/msg00215.html (8,944 bytes)

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