Before revision:  Its discretization results in some tables of bids,  expected returns for different investment horizons. This is a new approach; its preimage is a new contract card game presented at the end, a combination of bridge and poker.
After revision:  Its discretization results in some tables of bids, expected returns for main investment horizons, the key in our trading system. The ML procedures we use are similar to those in neural networking. A preimage of our approach is the new contract card game presented at the end, a combination of bridge and poker.