/// <summary>
/// Open any datasets that were used by the input layer.
/// </summary>
private void OpenDataSet()
{
// clear out any data sets already there
this.readDataSet.Clear();
this.dataSetFieldMap.Clear();
this.dataSetIteratorMap.Clear();
// only add each iterator once
IDictionary <INeuralDataSet, NeuralDataFieldHolder> uniqueSets = new Dictionary <INeuralDataSet, NeuralDataFieldHolder>();
// find the unique files
foreach (IInputField field in this.inputFields)
{
if (field is InputFieldNeuralDataSet)
{
InputFieldNeuralDataSet dataSetField = (InputFieldNeuralDataSet)field;
INeuralDataSet dataSet = dataSetField.NeuralDataSet;
if (!uniqueSets.ContainsKey(dataSet))
{
IEnumerator <INeuralDataPair> iterator = dataSet
.GetEnumerator();
NeuralDataFieldHolder holder = new NeuralDataFieldHolder(
iterator, dataSetField);
uniqueSets[dataSet] = holder;
this.readDataSet.Add(iterator);
}
NeuralDataFieldHolder holder2 = uniqueSets[dataSet];
this.dataSetFieldMap[dataSetField] = holder2;
this.dataSetIteratorMap[holder2.GetEnumerator()] = holder2;
}
}
}
/// <summary>
/// Called internally to advance to the next row.
/// </summary>
/// <returns>True if there are more rows to reed.</returns>
private bool Next()
{
// see if any of the CSV readers want to stop
foreach (ReadCSV csv in this.readCSV)
{
if (!csv.Next())
{
return(false);
}
}
// see if any of the data sets want to stop
foreach (IEnumerator <INeuralDataPair> iterator in this.readDataSet)
{
if (!iterator.MoveNext())
{
return(false);
}
NeuralDataFieldHolder holder = this.dataSetIteratorMap
[iterator];
INeuralDataPair pair = iterator.Current;
holder.Pair = pair;
}
// see if any of the arrays want to stop
foreach (IInputField field in this.inputFields)
{
if (field is IHasFixedLength)
{
IHasFixedLength fl = (IHasFixedLength)field;
if ((this.currentIndex + 1) >= fl.Length)
{
return(false);
}
}
}
this.currentIndex++;
return(true);
}
/// <summary>
/// Called internally to obtain the current value for an input field.
/// </summary>
/// <param name="field">The input field to determine.</param>
/// <param name="index">The current index.</param>
/// <returns>The value for this input field.</returns>
private double DetermineInputFieldValue(IInputField field,
int index)
{
double result = 0;
if (field is InputFieldCSV)
{
InputFieldCSV fieldCSV = (InputFieldCSV)field;
ReadCSV csv = this.csvMap[field];
result = csv.GetDouble(fieldCSV.Offset);
}
else if (field is InputFieldNeuralDataSet)
{
InputFieldNeuralDataSet neuralField = (InputFieldNeuralDataSet)field;
NeuralDataFieldHolder holder = this.dataSetFieldMap
[field];
INeuralDataPair pair = holder.Pair;
int offset = neuralField.Offset;
if (offset < pair.Input.Count)
{
result = pair.Input[offset];
}
else
{
offset -= pair.Input.Count;
result = pair.Ideal[offset];
}
}
else
{
result = field.GetValue(index);
}
field.CurrentValue = result;
return(result);
}
