comparison toolboxes/distance_learning/mlr/cuttingPlane/cpGradientDODMKL.m @ 0:e9a9cd732c1e tip

first hg version after svn

+function dPsi = cpGradientDODMKL(X, S)
+
+    [d,n,m] = size(X);
+
+    dPsi    = zeros(m,m,d);
+
+    for i = 1:m
+        dPsi(i,i,:)     = diag(X(:,:,i) * S * X(:,:,i)');
+        for j = (i+1):m
+            Q           = X(:,:,i) + X(:,:,j);
+            dPsi(i,j,:) = diag( Q * S * Q');
+        end
+    end
+end