13. A non-transitory computer-readable memory device storing instructions that are executable by one or more processors of one or more devices, the instructions including: one or more instructions to extract, from each document, of a plurality of documents, only one title to obtain a plurality of titles, where a particular title of a particular document includes a label or identifying data identifying the particular document, and where each document, of the plurality of documents, is associated with only one title; one or more instructions to count a quantity of times that particular words occur within the plurality of titles, one or more instructions to compute a score for each title of the plurality of titles, where the plurality of titles and the computed scores are associated with a particular time period, and where the score for each title is derived from the quantity of times that the particular words occur within the plurality of titles, and a quantity of words, included in the selected words, that are included in the each title, and one or more instructions to select one title from the plurality of titles, based on the computed scores associated with the particular time period, where the particular time period is associated with a portion of a particular time interval, where the score associated with the one title is a first score, where the particular time interval includes another time period that is associated with a second score that exceeds the first score, and where a quantity of times the selected words occur in titles, that are associated with the other time period, exceeds a quantity of times the selected words occur in the plurality of titles that are associated with the particular time period.
16. The computer-readable memory device of claim 13 , where the score, associated with the selected one title, has a greatest magnitude of the computed scores associated with the particular time period.