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]= -1.55087([0]+0.0680024)^5 + noise_3
[5]= -0.321587([2]+0.20139)^5 + noise_5
[2]= -0.12318([0]+0.798542)^2 + noise_2
[6]= +1.933([1]+0.758449)^2 -1.20664([4]-0.441563)^5 + noise_6
[4]= 0.0309373 * ([2])^5 + noise_4
