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]= -0.462758([0]-0.524279)^4 + noise_3
[5]= +0.878011([2]-0.324513)^3 + noise_5
[2]= -0.254263([0]-0.94195)^5 + noise_2
[6]= -1.08956([4]+0.874063)^4 + noise_6
[4]= -0.373207([1]-0.284162)^4 +0.949514([2]+0.574198)^5 + noise_4
