public override KerasSymbol[] Invoke(KerasSymbol[] inputs, FuncArgs kwargs = null)
{
List <KerasSymbol> result = new List <KerasSymbol>();
foreach (var input in inputs)
{
result.Add(input * K.Cast(K.Greater(inputs[0], this.theta), K.FloatX()));
}
return(result.ToArray());
}