Data type: non-sparse
Number of features: 500
Number of examples and check-sums:
     	Pos_ex	Neg_ex	Tot_ex	Check_sum
Train	 1000	 1000	 2000	488083511.00
Valid	  300	  300	  600	146395833.00
Test	  900	  900	 1800	439209553.00
All  	 2200	 2200	 4400	1073688897.00