From 3fc4bf4a2ea7c6cff9810b76964dd3c1388c0b3f Mon Sep 17 00:00:00 2001
From: Eduardo Pedroni <ep625@york.ac.uk>
Date: Tue, 11 Feb 2014 08:30:36 +0000
Subject: Updated README, made a few changes to Chromosome's mutation methods,
will be working on that throughout the day
---
src/jcgp/population/Chromosome.java | 46 +++++++++++++++++++++++++++++++++++++
1 file changed, 46 insertions(+)
(limited to 'src/jcgp/population')
diff --git a/src/jcgp/population/Chromosome.java b/src/jcgp/population/Chromosome.java
index 195b95c..0dc3ff9 100644
--- a/src/jcgp/population/Chromosome.java
+++ b/src/jcgp/population/Chromosome.java
@@ -123,5 +123,51 @@ public class Chromosome {
return nodes[index / Parameters.getColumns()][index % Parameters.getColumns()];
}
}
+
+ /**
+ * Returns a random allowed connection respecting levels back.
+ * This method may always pick inputs, as they can be picked
+ * regardless of the column.
+ *
+ * @param column the column to use as reference
+ * @return a random connection
+ */
+ public Connection getRandomConnection(int column) {
+
+
+
+ return null;
+
+ }
+
+ /**
+ * Returns a random allowed connection.
+ *
+ * This method may always pick inputs, as they can be picked
+ * regardless of the column.
+ *
+ * TODO optimise for less random generations
+ *
+ * @param column the column to use as reference
+ * @param levelsBack whether or not to respect levels back
+ * @return a random connection
+ */
+ public Connection getRandomConnection(int column, boolean levelsBack) {
+
+ if (levelsBack) {
+ return getRandomConnection(chromosome, column);
+ } else {
+ // choose input or node
+ int connectionType = Utilities.getRandomInt(inputs.length + (nodes.length * column));
+ if (connectionType < inputs.length) {
+ // input
+ return chromosome.getInput(getRandomInt(Parameters.getInputs()));
+ } else {
+ // node
+ return chromosome.getNode(getRandomInt(Parameters.getRows()), getRandomInt(column));
+ }
+ }
+
+ }
}
--
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