Added more comments, minor refactorings

1 files changed, 4 insertions, 1 deletions

diff --git a/src/jcgp/backend/statistics/StatisticsLogger.java b/src/jcgp/backend/statistics/StatisticsLogger.java
index dfbcdbe..7165a11 100644
--- a/src/jcgp/backend/statistics/StatisticsLogger.java
+++ b/src/jcgp/backend/statistics/StatisticsLogger.java
@@ -173,6 +173,7 @@ public class StatisticsLogger {
 	public int getSuccessfulRuns() {
 		int count = 0;
 		for (RunEntry runEntry : runEntries) {
+			// only increment if solution was perfect
 			if (runEntry.isSuccessful()) {
 				count++;
 			}
@@ -189,7 +190,7 @@ public class StatisticsLogger {
 	 * @return the success rate across all runs.
 	 */
 	public double getSuccessRate() {
-		return getSuccessfulRuns() / runEntries.size();
+		return getSuccessfulRuns() / (double) runEntries.size();
 	}
 	
 	/**
@@ -203,6 +204,7 @@ public class StatisticsLogger {
 		double average = 0;
 		int successfulRuns = getSuccessfulRuns();
 		for (RunEntry runEntry : runEntries) {
+			// only if solution was perfect
 			if (runEntry.isSuccessful()) {
 				average += runEntry.getGeneration() / successfulRuns;
 			}
@@ -221,6 +223,7 @@ public class StatisticsLogger {
 		double average = getAverageSuccessfulGenerations();
 		double temp, stdDev = 0;
 		for (RunEntry runEntry : runEntries) {
+			// only if solution was perfect
 			if (runEntry.isSuccessful()) {
 				temp = runEntry.getGeneration() - average;
 				temp = temp * temp;