14. The method of claim 11 , wherein the received first signal further indicates a second set of document search results from a search engine, the method further comprising: modifying the second set of document search results based on the ranked first set of documents; computing a rank score for each document of the second set of document search results; ranking each document of the second set of document search results based on the computed rank score to generate ranked modified results; and transmitting a third signal indicative of the modified results.
15. The method of claim 14 , wherein the rank score is a combined rank value based on a first rank value determined by the search engine and a second rank value determined by the machine learned ranking function.