12. The method according to claim 1 , wherein generating the refinement options comprises selecting as the refinement options a portion of respective terms of the association graph directly linked to the terms of the search query by respective edges of the association graph.
12. The method according to claim 1 , wherein generating the refinement options comprises selecting as the refinement options a portion of respective terms of the association graph directly linked to the terms of the search query by respective edges of the association graph. 13. The method according to claim 12 , wherein the refinement options comprise primary and secondary refinement options, wherein generating the refinement options comprises: selecting as the primary refinement options a portion of the respective terms of the association graph directly linked to the terms of the search query by respective edges of the association graph; and for each of at least a portion of the primary refinement options, selecting as the secondary refinement options a portion of the respective terms of the association graph that are (a) directly linked to the terms of the search query by respective edges of the association graph, and (b) directly linked to the term of the primary refinement option by respective edges of the association graph, and wherein presenting the refinement options comprises presenting the primary refinement options, and the secondary refinement options for the at least the portion of the primary refinement options.