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To:
Sent: Thursday, May 08, 2008 11:20 PM
Subject: [R] speeding up a special product of three arrays
I am struggling with R code optimization, a recurrent topic on this
list.
I have three arrays, say A, B and C, all having the same number of
columns.
I need to compute an array D
p://www.student.kuleuven.be/~m0390867/dimitris.htm
- Original Message -
From: "Giuseppe Paleologo" <[EMAIL PROTECTED]>
To:
Sent: Thursday, May 08, 2008 11:20 PM
Subject: [R] speeding up a special product of three arrays
I am struggling with R code optimization, a recurrent topi
Le jeu. 8 mai à 17:20, Giuseppe Paleologo a écrit :
I am struggling with R code optimization, a recurrent topic on this
list.
I have three arrays, say A, B and C, all having the same number of
columns.
I need to compute an array D whose generic element is
D[i, j, k] <- sum_n A[i, n]*B[j,
I am struggling with R code optimization, a recurrent topic on this list.
I have three arrays, say A, B and C, all having the same number of columns.
I need to compute an array D whose generic element is
D[i, j, k] <- sum_n A[i, n]*B[j, n]*C[k, n]
Cycling over the three indices and subsetting th
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