extended SSIMEvaluatorForFiles to support multiple snapshots

bundles/fr.irisa.cairn.gecos.typeexploration/src/SSIMEvaluatorForFiles.java

@@ -19,11 +19,11 @@ public class SSIMEvaluatorForFiles {
 		Path path1 = Paths.get("/Users/tyuki/projects/GeCoS/gecos-float2fix/bundles/fr.irisa.cairn.gecos.typeexploration.demo/demos/nlm_png/outputs/nlm/2018-09-12-10:54:32/exploration/simulations/ref/profiling-files");
 		Path path2 = Paths.get("/Users/tyuki/projects/GeCoS/gecos-float2fix/bundles/fr.irisa.cairn.gecos.typeexploration.demo/demos/nlm_png/outputs/nlm/2018-09-12-10:54:32/exploration/simulations/sol1/profiling-files");
 
-		double ssim = evaluate(384, 512, path1, path2);
+		double ssim = evaluate(384, 512, path1, path2, 1);
 		System.out.println(ssim);
 	}
 	
-	private static double evaluate(int H, int W, Path dir1, Path dir2) {
+	private static double evaluate(int H, int W, Path dir1, Path dir2, int nbSims) {
 		
 		try {
 			Map<Integer, ProfilingInfo<? extends Number>> variablesInfo1 = new ProfilingInfoParser(dir1).retrieve();
@@ -35,12 +35,17 @@ public class SSIMEvaluatorForFiles {
 			
 			ProfilingInfo<? extends Number> profilingInfo1 = variablesInfo1.values().iterator().next();
 			ProfilingInfo<? extends Number> profilingInfo2 = variablesInfo2.values().iterator().next();
+
+			double ssim = 1.0;
+			for (int i = 0; i < nbSims; i++) {
+				Number[] array1 = profilingInfo1.getSnapshot(i);
+				Number[] array2 = profilingInfo2.getSnapshot(i);
+				
+				SSIMEvaluator ssimEval = new SSIMEvaluator(W, H, array1, array2);
+				ssim = Math.min(ssim, ssimEval.evaluate());
+			}
 			
-			Number[] array1 = profilingInfo1.getSnapshot(0);
-			Number[] array2 = profilingInfo2.getSnapshot(0);
-			
-			SSIMEvaluator ssimEval = new SSIMEvaluator(W, H, array1, array2);
-			return ssimEval.evaluate();
+			return ssim;
 		} catch(Exception e) {
 			e.printStackTrace();
 		}