1. A method comprising: accessing an index of data items stored on tangible, non-transitory computer readable media, wherein data items have a corresponding probability (f i ) of having a problem, a cost to review the data item (cost i ), a penalty if a problem in the data item is not remedied (penalty i ), and a gain if a problem in the data item is remedied (gain i ); identifying a subset of data items of the index of data items, wherein the subset comprises at least one data item with a corresponding f i that is greater than or equal to a decision threshold; ranking at least a portion of the subset of data items based at least in part on the data items' corresponding cost i , f i , and gain i ; and storing the ranked portion of the subset of data items in a queue on the tangible, non-transitory computer readable media.