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view toolboxes/distance_learning/mlr/util/distToFrom.m @ 0:cc4b1211e677 tip

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initial commit to HG from Changeset: 646 (e263d8a21543) added further path and more save "camirversion.m"
author Daniel Wolff
date Fri, 19 Aug 2016 13:07:06 +0200
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function D = distToFrom(n, Vto, Vfrom, Ito, Ifrom)
    Cross           = -2 * Vto' * Vfrom;
    Tonorm          = sum(Vto .^2, 1)';
    Fromnorm        = sum(Vfrom .^2, 1);

    D               = zeros(n);
    D(Ito,Ifrom)    = bsxfun(@plus, bsxfun(@plus, Cross, Tonorm), Fromnorm);
end