GSB will look for the best systems (highest fitness) on the training section only. Training % is percentage of the bars to use in the in the Sample (IS) training. Recommended 30% to 60%. GSB fitness is maximized over this period only. It is very important NOT to use the highly volatile 2007 - 2008 period in training. This would lead to systems that perform poorly in lower volatility periods. You can alter dates used by changing test at beginning option to true or false.
Custom dates for training, test and validation can be done
Note: We can use 100% training while using Nth day feature.