Walk Forward Validation

It calculates all Walk Forward segments.
If the final strategy passes the Acceptance Criteria the Reactor (Validator) sends the original strategy to the  Collection.

Walk Forward Optimization

If the strategy passes the Acceptance Criteria after the final segment if it shows better performance than the original strategy, the Reactor (Validator) accepts the new strategy parameters.

Walk Forward Optimization changes the original strategy parameters with the ones produced by the optimization of the last Walk Forward segment.