private void addNode() {
int connectionIndex = this.randomGenerator.nextInt(this.connections.size());
Connection connection = this.connections.get(connectionIndex);
connection.disable();
int nodeId =
(this.hiddenNodes.isEmpty()
? this.outputNodes.get(this.outputNodes.size() - 1).getId()
: this.hiddenNodes.get(this.hiddenNodes.size() - 1).getId())
+ 1;
this.hiddenNodes.add(new Node(nodeId, NodeType.HIDDEN));
this.connections.add(new Connection(connection.getFrom(), nodeId, 1));
this.connections.add(new Connection(nodeId, connection.getTo(), connection.getWeight()));
}
private void addConnection() {
// find unconnectedNodes
int toCount = this.hiddenNodes.size() + this.outputNodes.size();
int fromCount = this.inputNodes.size() + toCount;
// default boolean value is false
boolean[][] connectivityMatrix = new boolean[fromCount][toCount];
for (Connection connection : this.connections) {
int from = this.translateNodeIdToCoordinate(connection.getFrom(), true);
int to = this.translateNodeIdToCoordinate(connection.getTo(), false);
connectivityMatrix[from][to] = true;
}
List<Connection> connections = new LinkedList<Connection>();
for (int from = 0; from < connectivityMatrix.length; ++from) {
for (int to = 0; to < connectivityMatrix[0].length; ++to) {
if (!connectivityMatrix[from][to]) {
int fromId = this.translateCoordinateToNodeId(from, true);
int toId = this.translateCoordinateToNodeId(to, false);
connections.add(new Connection(fromId, toId));
}
}
}
int connectionIndex = this.randomGenerator.nextInt(connections.size());
this.connections.add(connections.get(connectionIndex));
}