public unsafe void Train(IChannel ch, int rowCount, int colCount,
RowCursor cursor, ValueGetter <float> labGetter,
ValueGetter <uint> rowGetter, ValueGetter <uint> colGetter)
{
if (_pMFModel != null)
{
MFDestroyModel(ref _pMFModel);
_host.Assert(_pMFModel == null);
}
MFProblem prob = new MFProblem();
MFNode[] nodes = ConstructLabeledNodesFrom(ch, cursor, labGetter, rowGetter, colGetter, rowCount, colCount);
fixed(MFNode *nodesPtr = &nodes[0])
{
prob.R = nodesPtr;
prob.M = rowCount;
prob.N = colCount;
prob.Nnz = nodes.Length;
ch.Info("Training {0} by {1} problem on {2} examples",
prob.M, prob.N, prob.Nnz);
fixed(MFParameter *pParam = &_mfParam)
{
_pMFModel = MFTrain(&prob, pParam);
}
}
}
public unsafe void TrainWithValidation(IChannel ch, int rowCount, int colCount,
DataViewRowCursor cursor, ValueGetter <float> labGetter,
ValueGetter <uint> rowGetter, ValueGetter <uint> colGetter,
DataViewRowCursor validCursor, ValueGetter <float> validLabGetter,
ValueGetter <uint> validRowGetter, ValueGetter <uint> validColGetter)
{
if (_pMFModel != null)
{
MFDestroyModel(ref _pMFModel);
_host.Assert(_pMFModel == null);
}
MFNode[] nodes = ConstructLabeledNodesFrom(ch, cursor, labGetter, rowGetter, colGetter, rowCount, colCount);
MFNode[] validNodes = ConstructLabeledNodesFrom(ch, validCursor, validLabGetter, validRowGetter, validColGetter, rowCount, colCount);
MFProblem prob = new MFProblem();
MFProblem validProb = new MFProblem();
fixed(MFNode *nodesPtr = &nodes[0])
fixed(MFNode * validNodesPtrs = &validNodes[0])
{
prob.R = nodesPtr;
prob.M = rowCount;
prob.N = colCount;
prob.Nnz = nodes.Length;
validProb.R = validNodesPtrs;
validProb.M = rowCount;
validProb.N = colCount;
validProb.Nnz = nodes.Length;
ch.Info("Training {0} by {1} problem on {2} examples with a {3} by {4} validation set including {5} examples",
prob.M, prob.N, prob.Nnz, validProb.M, validProb.N, validProb.Nnz);
fixed(MFParameter *pParam = &_mfParam)
{
_pMFModel = MFTrainWithValidation(&prob, &validProb, pParam);
}
}
}