// Create Value based on dense input
// Todo: could this be a extension to Value class??
// Todo: use Variable instead of varName. VarName as extension method
// Todo: List can have maximal 2^31-1, enough? Otherwise need to go to array which supports 64bit size
public Value CreateValue <T>(string varName, List <List <T> > sequences, DeviceDescriptor computeDevice)
{
var variable = getVariableByName(varName);
var dim = variable.Shape.TotalSize;
if (typeof(T).Equals(typeof(float)))
{
var inputSeqVector = new FloatVectorVector();
foreach (var seq in sequences)
{
if (seq.Count() % dim != 0)
{
throw new InvalidDataException("the number of data in sequences does not match the input dimension");
}
var samples = new FloatVector(seq);
inputSeqVector.Add(samples);
}
var inputValue = Value.CreateDenseFloat(variable.Shape, inputSeqVector, computeDevice);
return(inputValue);
}
else if (typeof(T).Equals(typeof(double)))
{
var inputSeqVector = new DoubleVectorVector();
foreach (var seq in sequences)
{
if (seq.Count() % dim != 0)
{
throw new InvalidDataException("the number of data in sequences does not match the input dimension");
}
var samples = new DoubleVector(seq);
inputSeqVector.Add(samples);
}
var inputValue = Value.CreateDenseDouble(variable.Shape, inputSeqVector, computeDevice);
return(inputValue);
}
else
{
throw new InvalidDataException("The data type " + typeof(T).ToString() + " is not supported. Only float or double is supported by CNTK.");
}
}