11. The apparatus of claim 9 , wherein the filtering unit obtains the importance degree characteristics of the one or more candidate recommendations based on related data before a preset time point.
11. The apparatus of claim 9 , wherein the filtering unit obtains the importance degree characteristics of the one or more candidate recommendations based on related data before a preset time point. 12. The apparatus of claim 11 , wherein the filtering unit revises the importance degree characteristics of the one or more candidate recommendations based on the related data after the preset time point.