private void printDirectedGraphNodes(DirectedGraph graph, DataOutput out, PrintWriter pw)
throws IOException {
for (DirectedGraphNode g : graph.getDirectedGraphNodes()) {
int id = g.getUniqueGraphNodeID();
if (id == 0) continue; // empty node, do not write
Node leaf = g.getLeafNode();
int leafID = 0;
int leafNodeType = 0;
if (leaf != null) {
if (leaf instanceof LeafNode) {
leafID = ((LeafNode) leaf).getUniqueLeafId();
leafNodeType = DirectedGraphReader.LEAFNODE;
} else if (leaf instanceof DirectedGraphNode) {
leafID = ((DirectedGraphNode) leaf).getUniqueGraphNodeID();
leafNodeType = DirectedGraphReader.DIRECTEDGRAPHNODE;
} else {
throw new IllegalArgumentException("Unexpected leaf type: " + leaf.getClass());
}
}
DecisionNode d = g.getDecisionNode();
int decID = d != null ? d.getUniqueDecisionNodeId() : 0;
if (out != null) {
int outLeafId = leafID == 0 ? 0 : leafID | (leafNodeType << 30);
out.writeInt(outLeafId);
int outDecId = decID == 0 ? 0 : decID | (DirectedGraphReader.DECISIONNODE << 30);
out.writeInt(outDecId);
}
if (pw != null) {
pw.print("DGN" + id);
if (leafID == 0) {
pw.print(" 0");
} else if (leaf.isLeafNode()) {
pw.print(" id" + leafID);
} else {
assert leaf.isDirectedGraphNode();
pw.print(" DGN" + leafID);
}
if (decID == 0) pw.print(" 0");
else pw.print(" -" + decID);
pw.println();
}
}
}
private void printDecisionNodes(DirectedGraph graph, DataOutput out, PrintWriter pw)
throws IOException {
for (DecisionNode decNode : graph.getDecisionNodes()) {
int id = decNode.getUniqueDecisionNodeId();
String nodeDefinition = decNode.getNodeDefinition();
int featureIndex = decNode.getFeatureIndex();
DecisionNode.Type nodeType = decNode.getDecisionNodeType();
if (out != null) {
// dump in binary form to output
out.writeInt(featureIndex);
out.writeInt(nodeType.ordinal());
// Now, questionValue, which depends on nodeType
switch (nodeType) {
case BinaryByteDecisionNode:
out.writeInt(((BinaryByteDecisionNode) decNode).getCriterionValueAsByte());
assert decNode.getNumberOfDaugthers() == 2;
break;
case BinaryShortDecisionNode:
out.writeInt(((BinaryShortDecisionNode) decNode).getCriterionValueAsShort());
assert decNode.getNumberOfDaugthers() == 2;
break;
case BinaryFloatDecisionNode:
out.writeFloat(((BinaryFloatDecisionNode) decNode).getCriterionValueAsFloat());
assert decNode.getNumberOfDaugthers() == 2;
break;
case ByteDecisionNode:
case ShortDecisionNode:
out.writeInt(decNode.getNumberOfDaugthers());
}
// The child nodes
for (int i = 0, n = decNode.getNumberOfDaugthers(); i < n; i++) {
Node daughter = decNode.getDaughter(i);
if (daughter == null) {
out.writeInt(0);
} else if (daughter.isDecisionNode()) {
int daughterID = ((DecisionNode) daughter).getUniqueDecisionNodeId();
// Mark as decision node:
daughterID |= DirectedGraphReader.DECISIONNODE << 30;
out.writeInt(daughterID);
} else if (daughter.isLeafNode()) {
int daughterID = ((LeafNode) daughter).getUniqueLeafId();
// Mark as leaf node:
if (daughterID != 0) daughterID |= DirectedGraphReader.LEAFNODE << 30;
out.writeInt(daughterID);
} else if (daughter.isDirectedGraphNode()) {
int daughterID = ((DirectedGraphNode) daughter).getUniqueGraphNodeID();
// Mark as directed graph node:
if (daughterID != 0) daughterID |= DirectedGraphReader.DIRECTEDGRAPHNODE << 30;
out.writeInt(daughterID);
}
}
}
if (pw != null) {
// dump to print writer
StringBuilder strNode = new StringBuilder("-" + id + " " + nodeDefinition);
for (int i = 0, n = decNode.getNumberOfDaugthers(); i < n; i++) {
strNode.append(" ");
Node daughter = decNode.getDaughter(i);
if (daughter == null) {
strNode.append("0");
} else if (daughter.isDecisionNode()) {
int daughterID = ((DecisionNode) daughter).getUniqueDecisionNodeId();
strNode.append("-").append(daughterID);
out.writeInt(daughterID);
} else if (daughter.isLeafNode()) {
int daughterID = ((LeafNode) daughter).getUniqueLeafId();
if (daughterID == 0) strNode.append("0");
else strNode.append("id").append(daughterID);
} else if (daughter.isDirectedGraphNode()) {
int daughterID = ((DirectedGraphNode) daughter).getUniqueGraphNodeID();
if (daughterID == 0) strNode.append("0");
else strNode.append("DGN").append(daughterID);
}
}
pw.println(strNode.toString());
}
}
}