The idea is connected to no.of spins which you play in progression. E.g. 10 spins, than you go through last 60 spins and analyze the probability of every number in 37 numbers hitting in 10 spins base on current sequence of 60 spins. (negative + positive ratio). Plus I calculate so called expectation for every number connected to nonhit. (expectation to hit per number) = the higher NH the higher exp. Putting it together it creates vel.index and it is sorted that App predicts the highest vel.index first etc.