1. A non-transitory computer-readable storage medium storing computer-executable instructions that, in response to execution, cause a device comprising a processor to perform operations, comprising: text mining metadata of a word combination that is at least one of a noun-verb combination or a verb-noun combination and that is associated with a video sample for the word combination; storing in the memory the at least one of the noun-verb combination or the verb-noun combination a video category label among a set of video category labels; and filtering the set of video category labels containing the at least one of the noun-verb combination or the verb-noun combination stored in the memory based upon a lexical hierarchy.
5. The non-transitory computer-readable storage medium of claim 1 , wherein the operations further comprise: extracting a plurality of features from the video sample.