"The walk forward analyzer is an interesting feature wherein you can optimize using various built in criteria was well as any user defined one you want to perform your walk forward analysis.
Walk-forward testing is a specific application of a technique known as cross-validation. It means that you can take part of your data to optimize a system, and a part of the data to validate.
In other words, it is the optimization of a segment of data to get the most suitable/stable parameters of the system and perform the system with these parameters in another segment of data such that these two segments of data do not overlap."
