11. The method of claim 9 , wherein said calculating a sum of query errors based on the defined query error for a plurality of queries comprises: calculating a regularized sum of query errors based on the defined query error for a plurality of queries.
12. The method of claim 11 , wherein said calculating a regularized sum of query errors based on the defined query error for a plurality of queries comprises: calculating the regularized sum of query errors according to λ 2 ⁢  w - w 0  2 + ∑ q = 1 n q ⁢ ( max π ⁢ ∑ i ∈ U q ⁢ D ⁡ ( π ⁡ ( ⅈ ) ) ⁢ G ⁡ ( y i ) - ∑ j = 1 NDq ⁢ D ⁡ ( j ) ⁢ ∑ i ∈ U q ⁢ G ⁡ ( y i ) ⁢ h ij ∑ i ∈ U q ⁢ h ij ) , where λ=a regularization parameter, w 0 =a weight vector, and n q =a number of queries.