diff --git a/analyze.m b/analyze.m
index 0f2bb96..cdf872f 100644
--- a/analyze.m
+++ b/analyze.m
@@ -1,6 +1,6 @@
 % algorithms to compare
-algos = {'rx', 'dwest', 'nswtd', 'mwnswtd', 'pcag'};
-algos_nice = {'Global RX', 'DWEST', 'NSWTD', 'MW-NSWTD', 'PCAG'};
+algos = {'rx', 'rxl', 'dwest', 'nswtd', 'mwnswtd', 'pcag', 'mwpcag', 'knna'};
+algos_nice = {'Global RX', 'Local RX', 'DWEST', 'NSWTD', 'MW-NSWTD', 'PCAG', 'MW-PCAG', 'KNN'};
 
 % scenes to compare
 scene_files = dir('scenes/*.jpg');
@@ -8,7 +8,7 @@
 % scene_files = {'beach.jpg', 'desert.jpg', 'island.jpg'};
 
 % color spaces to compare
-color_spaces = {'RGB', 'L*a*b', 'u''v''L', 'uvL', 'xyY', 'XYZ', '*a*b', 'u''v''', 'uv', 'xy', 'XZ', 'log(L)*a*b'};
+color_spaces = {'RGB', 'L*a*b', 'u''v''L', 'uvL', 'xyY', 'XYZ', '*a*b', 'u''v''', 'uv', 'xy', 'XZ', 'log(L)*a*b', 'YCbCr', 'CbCr'};
 
 % make comprehensive target
 target = [];
@@ -62,7 +62,7 @@
 
 % bar plot
 b = bar(tbl);
-ylim([0.85 1.0]);
+ylim([0.65 1.0]);
 ylabel('AUC');
 xlabel('Color space');
 legend(b, algos, 'Location', 'EastOutside');
diff --git a/performance.m b/performance.m
new file mode 100644
index 0000000..359a25f
--- /dev/null
+++ b/performance.m
@@ -0,0 +1,36 @@
+% algorithms to performance test
+algos = {@RX_global, @rxl, @dwest, @nswtd, @mwnswtd, @pcag, @pcag, @knn};
+algos_nice = {'Global RX', 'Local RX', 'DWEST', 'NSWTD', 'MW-NSWTD', 'PCAG', 'MW-PCAG', 'KNN'};
+
+% scenes to compare
+scene_files = {'beach.jpg', 'desert.jpg', 'island.jpg'};
+
+% results
+tbl = zeros(numel(algos), numel(scene_files));
+
+for i = 1:numel(algos)
+    cb = algos{i};
+    
+    for j = 1:numel(scene_files)
+        % load scene
+        scene = scene_files{j};
+        s = load(sprintf('output/%s.mat', scene), 'scene');
+        img = s.scene;
+        
+        % profile
+        t = cputime;
+        a = cb(img);
+        e = cputime - t;
+        
+        % store result
+        tbl(i, j) = e;
+    end
+end
+
+% bar plot
+b = bar(tbl);
+ylabel('Time (s)');
+xlabel('Algorithm');
+set(gca, 'XTickLabel', algos_nice);
+title('Execution Time');
+print(gcf, 'exec.png', '-dpng', '-r300');
\ No newline at end of file