I'm trying to improve accuracy. I created a few new features based on old features. So I need to fill new feature's empty cell with same values in order to equaling shapes.Then, I tried it with median and also with mean but nothing changed. Is there any method that I can apply these cells in order to improve accuracy?
for example, there is a feature named age I created new 2 feature named age_1 and age_2 , age1 consisting of age < 55 , age2 consisting of age > 55
therefore there is some empty cells in the new features and I have to fill these