diff toolboxes/distance_learning/mlr/feasible/feasibleFullMKL.m @ 0:e9a9cd732c1e tip

first hg version after svn
author wolffd
date Tue, 10 Feb 2015 15:05:51 +0000
parents
children
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolboxes/distance_learning/mlr/feasible/feasibleFullMKL.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,16 @@
+function W = feasibleFullMKL(W)
+%
+% W = feasibleFullMKL(W)
+%
+% Projects a single d*d matrix onto the PSD cone
+%
+    global FEASIBLE_COUNT;
+    m       = size(W,3);
+    FEASIBLE_COUNT = FEASIBLE_COUNT + m;
+
+    parfor i = 1:m
+        [v,d]       = eig(0.5 * (W(:,:,i) + W(:,:,i)'));
+        W(:,:,i)    = v * bsxfun(@times, max(real(diag(d)),0), v');
+    end
+end
+