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]= +1.25817([0]-0.256858)^5 + noise_3
[5]= +1.10363([2]+0.798514)^5 + noise_5
[2]= -1.59025([0]+0.477499)^2 + noise_2
[6]= -0.937889([1]+0.775555)^5 +1.03896([4]-0.212119)^5 + noise_6
[4]= +1.38169([1]+0.0371255)^3 + noise_4
