8. A system, comprising: a memory device storing instructions; and one or more processors to execute the instructions to: determine, at a first time, a first position of a document with respect to a first set of documents in a first list of search results, the first position being based on a first score of the document with respect to one or more scores associated with the first set of documents in the first list of search results; determine, at a second time, a second position of the document with respect to a second set of documents in a second list of search results, the second position being based on a second score of the document with respect to one or more scores associated with the second set of documents in the second list of search results; determine an amount or rate of change between the first position and the second position; generate a third score for the document based on the determined amount or rate of change between the first position and the second position; and rank the document against at least one other document based on the third score.
12. The system of claim 8 , where the one or more processors are further to: determine that the document is based on a particular search query, for which a quantity of documents that are based on the particular search query has increased over time, and where, when generating the third score for the document, the one or more processors are to: determine that the document is based on the particular search query.