public ManyToOneDataTableAdaptor(ILinearAlgebraProvider lap, IDataTable dataTable)
: base(lap, dataTable)
{
if (_dataColumnIndex.Count() > 1)
{
throw new NotImplementedException("Sequential datasets not supported with more than one input data column");
}
_rowDepth = new int[dataTable.RowCount];
FloatMatrix inputMatrix = null;
FloatVector outputVector = null;
dataTable.ForEach((row, i) => {
inputMatrix = row.GetField <FloatMatrix>(_dataColumnIndex[0]);
outputVector = row.GetField <FloatVector>(_dataTargetIndex);
_rowDepth[i] = inputMatrix.RowCount;
if (inputMatrix.ColumnCount != outputVector.Size)
{
throw new ArgumentException("Rows between input and output data tables do not match");
}
});
_inputSize = inputMatrix.ColumnCount;
_outputSize = outputVector.Size;
}
void _Initialise(IDataTable dataTable)
{
_rowDepth = new int[dataTable.RowCount];
FloatMatrix inputMatrix = null, outputMatrix = null;
dataTable.ForEach((row, i) => {
inputMatrix = row.GetField <FloatMatrix>(0);
outputMatrix = row.GetField <FloatMatrix>(1);
_rowDepth[i] = outputMatrix.RowCount;
});
_inputSize = inputMatrix.ColumnCount;
_outputSize = outputMatrix.ColumnCount;
}
public TableInfo(IDataTable table)
{
_classColumnIndex = table.TargetColumnIndex;
for (int i = 0, len = table.ColumnCount; i < len; i++) {
if (i != _classColumnIndex) {
var column = table.Columns[i];
if (column.IsContinuous)
_continuous.Add(i);
else if (ColumnTypeClassifier.IsCategorical(column))
_categorical.Add(i);
}
}
table.ForEach(row => _data.Add(new InMemoryRow(row, _categorical, _continuous, _classColumnIndex)));
}
public RowClassifier(ILinearAlgebraProvider lap, IRowClassifier classifier, IDataTable dataTable, IDataTableAnalysis analysis, string name = null)
: base(name)
{
_lap = lap;
_classifier = classifier;
_targetLabel = analysis.ColumnInfo
.First(ci => dataTable.Columns[ci.ColumnIndex].IsTarget)
.DistinctValues
.Select((v, i) => (v.ToString(), i))
.ToDictionary(d => d.Item1, d => d.Item2)
;
// read the entire data table into memory
dataTable.ForEach(row => _data.Add(row));
}
/// <inheritdoc />
protected RowBasedDataTableAdaptorBase(ILinearAlgebraProvider lap, IDataTable dataTable)
: base(lap, dataTable)
{
// read the entire data table into memory
dataTable.ForEach(row => _data.Add(row));
}