1. A computer-implemented method for pre-processing data, comprising: detecting one or more erroneous vectors in a plurality of vectors; detecting one or more erroneous elements in the one or more erroneous vectors; deleting the one or more detected erroneous elements; detecting one or more missing elements in the plurality of vectors; and populating one or more offending vectors that include one or more missing elements and/or deleted erroneous elements with one or more elements that are based on a distance metric.