Before revision:  This results in a number of suggestions which are presented to the designer, who can then edit them providing the system with valuable designer feedback. The effectiveness of this approach to create levels with similar level design patterns to a target is illustrated through a series of algorithm driven benchmark tests. To test the mixed-initiative aspect of the tool a triple-blind mixed-method, user study was conducted.
After revision:  A rigorous user study was designed which compared the experiences of designers using the mixed-initiative aspect of the tool a triple-blind mixed-method, user study was conducted.