/// <summary>
/// Create a new Function instance which just combines the outputs of the specified list of 'operands' Functions such that the 'Outputs' of the
/// new 'Function' are union of the 'Outputs' of each of the specified 'operands' Functions.
/// E.g. When creating a classification model, typically the CrossEntropy loss Function and the ClassificationError Function comprise the two roots
/// of the computation graph which can be "Combine"d to create a single Function with 2 outputs; viz. CrossEntropy loss and ClassificationError output.
/// </summary>
/// <param name="operands">variables whose function are to be combined</param>
/// <param name="name"></param>
/// <returns></returns>
public static Function Combine(IList <Variable> operands, string name = "")
{
VariableVector operandVector = Helper.AsVariableVector(operands);
return(CNTKLib.Combine(operandVector, name));
}
/// <summary>
/// Create a new Function which is the alias of operand.
/// </summary>
/// <param name="operand"></param>
/// <param name="name"></param>
/// <returns></returns>
public static Function Alias(Variable operand, string name = "")
{
return(CNTKLib.Alias(operand, name));
}
/// <summary>
/// Creates a composite function from the rootFunction.
/// </summary>
/// <param name="rootFunction"></param>
/// <param name="name"></param>
/// <returns></returns>
public static Function AsComposite(Function rootFunction, string name = "")
{
return(CNTKLib.AsComposite(rootFunction, name));
}
/// <summary>
/// Create a Placeholder variable to be used as a temporary/placeholder input to a Function.
/// All placeholder inputs of a Function must be replaced with non-placeholder Variables before Forward evaluation of the Function.
/// </summary>
/// <param name="shape"></param>
/// <param name="dynamicAxes"></param>
/// <returns></returns>
public static Variable PlaceholderVariable(NDShape shape, IList <Axis> dynamicAxes)
{
AxisVector dynamicAxesVector = Helper.AsAxisVector(dynamicAxes);
return(CNTKLib.PlaceholderVariable(shape, dynamicAxesVector));
}
/// <summary>
/// times operator of 2 Variables
/// </summary>
/// <param name="v1"></param>
/// <param name="v2"></param>
/// <returns></returns>
public static Function operator *(Variable v1, Variable v2)
{
return(CNTKLib.Times(v1, v2));
}
/// <summary>
/// plus operator of 2 Variables
/// </summary>
/// <param name="v1"></param>
/// <param name="v2"></param>
/// <returns></returns>
public static Function operator +(Variable v1, Variable v2)
{
return(CNTKLib.Plus(v1, v2));
}