4 Steps to Machine Learning with Pentaho

At this stage, the practitioner might be satisfied with the analysis and be ready to build a final production-ready model. Clearly decision trees are performing best, but is there a (statistically) significant difference between the different implementations? Is it possible to improve performance further? There might be more than one dataset (from different stores/sites) that needs to be considered. In such situations, it is a good idea to perform a more principled experiment to answer these questions.