public DTNode(DTNode node)
{
this.nodeGT = node.nodeGT;
this.nodeId = node.nodeId;
this.nodeLTE = node.nodeLTE;
this.nodeType = node.nodeType;
this.splitFeature = node.splitFeature;
this.splitFeatureIdx = node.splitFeatureIdx;
this.threshold = node.threshold;
this.fIsThresholdInt = node.fIsThresholdInt;
this.value = node.value;
}
public DTNode[,][] CreateDTNodes(string[] ColumnNames, int cIter)
{
int cClasses = this.boostTreeLoss.NumTreesPerIteration;
int cTrees = this.regressionTrees.Length;
cIter = (cTrees / cClasses) < cIter ? (cTrees / cClasses) : cIter;
DTNode[,][] nodes = new DTNode[cIter, cClasses][];
for (int i = 0; i < cIter; i++)
{
for (int j = 0; j < cClasses; j++)
{
if (this.regressionTrees[i, j] != null)
{
nodes[i, j] = this.regressionTrees[i, j].CreateDTNodes(this.featureNames);
}
}
}
return nodes;
}
// REVIEW: CJCB
public InputLayer(DTNode[,][] boostedDTs, int cIter)
{
int cClass = boostedDTs.GetLength(1);
this.cTransforms = cIter * cClass;
this.inputTransforms = new InputTransform[this.cTransforms];
this.outputs = new float[this.cTransforms];
for (int i = 0; i < cIter; i++)
{
for (int j = 0; j < cClass; j++)
{
this.inputTransforms[i*cClass + j] = new InputTransform(boostedDTs[i, j], i + 1);
}
}
}
public InputLayer(InputLayer inLayer, DTNode[,][] boostedDTs, int cIter)
{
this.cTransforms = inLayer.cTransforms + cIter;
this.inputTransforms = new InputTransform[this.cTransforms];
this.outputs = new float[this.cTransforms];
for (int i = 0; i < this.cTransforms; i++)
{
if (i < inLayer.cTransforms)
{
this.inputTransforms[i] = new InputTransform(inLayer.inputTransforms[i]);
}
else
{
int iNew = i - inLayer.cTransforms;
this.inputTransforms[i] = new InputTransform(boostedDTs[iNew, 0], i + 1);
}
}
}
private DTNode GetNode(int nodeId, List<DTNode> listDTNode)
{
foreach (DTNode node in listDTNode)
{
if (node.NodeID == nodeId)
{
return node;
}
}
DTNode nodeNew = new DTNode(nodeId);
listDTNode.Add(nodeNew);
return nodeNew;
}
public DecisionTreeTransform(DTNode[] dtNodes)
{
this.listDTNode = new List<DTNode>(dtNodes.Length);
for(int i=0; i<dtNodes.Length; i++)
{
this.listDTNode.Add(dtNodes[i]);
}
}
public NNModelMSN(NNModelMSN subModel, DTNode[,][] boostedDTs)
{
int cIter = boostedDTs.GetLength(0);
int cClass = boostedDTs.GetLength(1);
if (cClass == 1)
{
if (subModel != null)
{
this.cNodeLayer = subModel.cNodeLayer;
this.cInputs = subModel.cInputs + cIter;
this.layers = new Layer[this.cNodeLayer + 1];
//create the input layer
this.layers[0] = new InputLayer((InputLayer)subModel.layers[0], boostedDTs, cIter);
//create the extended node layers
for (int l = 1; l <= this.cNodeLayer; l++)
{
this.layers[l] = new NodeLayer((NodeLayer)subModel.layers[l], this.layers[l - 1]);
}
}
else
{
this.cNodeLayer = 1;
this.cInputs = cIter;
this.layers = new Layer[this.cNodeLayer + 1];
this.layers[0] = new InputLayer(boostedDTs, cIter);
this.layers[1] = new NodeLayer(1, this.cInputs, 1);
}
//add a new layer if necessary
if (this.layers[this.cNodeLayer].cOutputs > 1)
{
this.cNodeLayer++;
Layer[] layers = new Layer[this.cNodeLayer];
for (int i = 0; i < this.layers.Length; i++)
{
layers[i] = this.layers[i];
}
this.layers = layers;
this.layers[this.cNodeLayer-1] = new NodeLayer(this.cNodeLayer, this.layers[this.cNodeLayer-2].cOutputs, 1);
}
}
else
{
if (subModel == null)
{
this.cNodeLayer = 2;
this.cInputs = cIter * cClass;
this.layers = new Layer[this.cNodeLayer + 1];
this.layers[0] = new InputLayer(boostedDTs, cIter);
this.layers[1] = new NodeLayer(1, this.cInputs, cClass);//multiplex layer
this.layers[2] = new NodeLayer(2, cClass); //dotproduct node layer
}
else
{
throw new Exception("Multiclass sub-mart has not been implemented yet");
}
}
}
public InputTransform(DTNode[] dtNodes, int inID)
{
this.ftrName = "AnchorMostFrequent";
this.funcName = "DecisionTree";
this.inputID = inID;
this.transformFunc = new DecisionTreeTransform(dtNodes);
}
public DTNode CreateDTNode(int iNode, string[] ColumnNames)
{
DTNode node = new DTNode(iNode);
if (!isTerminal)
{
node.Add("NodeType", "Branch");
node.Add("NodeDecision", ColumnNames[this.split]);
node.Add("NodeThreshold", this.splitValue.ToString());
node.Add("NodeLTE", this.leftChild.ToString());
node.Add("NodeGT", this.rightChild.ToString());
}
else
{
node.Add("NodeType", "Value");
node.Add("NodeValue", this.regionValue.ToString());
}
return node;
}
public DTNode[] CreateDTNodes(string[] ColumnNames)
{
int cNodes = tree.Length;
DTNode[] dtNodes = new DTNode[cNodes];
for (int iNode = 0; iNode < cNodes; iNode++)
{
if (this.tree[iNode] != null)
{
dtNodes[iNode] = tree[iNode].CreateDTNode(iNode, ColumnNames);
}
}
return dtNodes;
}