Before revision:  Our system, StackGenVis, assists users in dynamically  managing data instances, selecting the most important features for a given data set, and choosing a set of top-performant and diverse algorithms  .
After revision:  Our system, StackGenVis, assists users in dynamically managing data instances, selecting the most important features for a given data set, and choosing a set of top-performant and diverse algorithms , and measuring the predictive performance .