7. The computer-implemented method of claim 6 , wherein the determining includes determining the relevance between the original query and the first alternative query and determining the relevance includes: aligning terms of the original query with terms of the first alternative query; and determining correlation values between the aligned terms.
6. The computer-implemented method of claim 1 , wherein the score is calculated by determining at least one of: (a) a relevance between the original query and a first alternative query, (b) a probability that the first alternative query will be selected, or (c) a score of the position of a selected search result for the first alternative query.