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annotate toolboxes/distance_learning/mlr/util/distToFrom.m @ 0:e9a9cd732c1e tip

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first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
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wolffd@0 1 function D = distToFrom(n, Vto, Vfrom, Ito, Ifrom)
wolffd@0 2 Cross = -2 * Vto' * Vfrom;
wolffd@0 3 Tonorm = sum(Vto .^2, 1)';
wolffd@0 4 Fromnorm = sum(Vfrom .^2, 1);
wolffd@0 5
wolffd@0 6 D = zeros(n);
wolffd@0 7 D(Ito,Ifrom) = bsxfun(@plus, bsxfun(@plus, Cross, Tonorm), Fromnorm);
wolffd@0 8 end