diff core/tools/machine_learning/cut_Y.m @ 0:e9a9cd732c1e tip

first hg version after svn

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/core/tools/machine_learning/cut_Y.m	Tue Feb 10 15:05:51 2015 +0000
@@ -0,0 +1,20 @@
+function r = cut_Y(r, valid_idx)
+% disables the invalid parts of the ranking structure Y    
+
+    % get indices not mentioned
+    u = find(~valid_idx);
+    
+    % clear bad data
+    for i = 1 : numel(u)
+        
+        r{u(i), 1} = [];
+        r{u(i), 2} = [];
+    end
+    
+    % also clear weights if applicable
+    if size(r,2) == 3
+        for i = 1 : numel(u)
+            r{u(i), 3} = 0;
+        end
+    end
+end
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