Ground Truth (X <tab> Y means X causes Y)
1	2
1	3
2	4
2	6
3	4
3	5
5	6


Coefficients
[1]= + noise_1
[3]= -0.60585([0]+0.724529)^2 + noise_3
[5]= +0.847219([2]-0.235051)^2 + noise_5
[2]= +0.884571([0]-0.776726)^3 + noise_2
[6]= +1.16494([1]+0.47735)^5 +1.66127([4]+0.589588)^2 + noise_6
[4]= -1.96479([2]+0.875996)^5 + noise_4
