I did not say that the overall model must be built on intraday data.
But most models will simply be useless without proper execution. And IMO, the model should be back-tested with simulating the transaction costs as close as possible.
So the overall model might be fine and interesting, but if you can't close the loop with a proper execution model, which usually affects the overall model as well, you simply don't have much.
But most models will simply be useless without proper execution. And IMO, the model should be back-tested with simulating the transaction costs as close as possible.
So the overall model might be fine and interesting, but if you can't close the loop with a proper execution model, which usually affects the overall model as well, you simply don't have much.