9. The method of claim 7 , wherein the first cluster of queries comprises the first query and wherein the first query comprises a first and second constraint and wherein the identifying the first synonym set comprises generating a distance matrix that identifies a distance between the first and second constraint.
10. The method of claim 9 , wherein the identifying the first synonym set comprises identifying the first constraint of the first query as included in the first plurality of constraints based on a position of the first constraint in the distance matrix and identifying the second constraint of the first query as not included in the first plurality of constraints based on a position of the second constraint in the distance matrix.