16. The method of claim 13 , further comprising determining, for each of the past entity collections, a cumulative ranking of the past entity collection based on a ranking of the past entity collection for each of the past queries.
16. The method of claim 13 , further comprising determining, for each of the past entity collections, a cumulative ranking of the past entity collection based on a ranking of the past entity collection for each of the past queries. 17. The method of claim 16 , wherein the ranking of the given candidate query suggestion is further based on the cumulative rankings of the past entity collections.