1. One or more computer readable storage memory devices including computer instructions executable by a processor of a computing device, the computer instructions being executable for tuning a general classification pipeline by performing operations comprising: for individual iterations of a plurality of iterations that alternate between a training classification pipeline and the general classification pipeline, evaluating training data through the training classification pipeline or the general classification pipeline using pipeline parameters, wherein the pipeline parameters include at least one of data set parameters, feature extraction parameters, or model selection parameters; and after evaluating the training data for a particular iteration of the plurality of iterations, determining if the training data and the pipeline parameters produce results meeting a criteria, and if the results from the particular iteration do not meet the criteria, then adjusting the pipeline parameters before continuing with a next iteration of the plurality of iterations.