I see, as far as I know, your X input array should be a n_samples x n_features 
array. Is this true in your case?

Btw. instead of converting the inputs to Python lists , you could also get the 
counts via

a1 = x[x == 1.0].shape[0]
b1 = y[y == 1.0].shape[0]

And maybe a few extra lines 

assert set(np.unique(x)).issubset({0.0, 1.0})
assert set(np.unique(x)).issubset({0.0, 1.0})

would be useful for debugging purposes?!


> On Jan 12, 2016, at 2:01 PM, Herbert Schulz <hrbrt....@gmail.com> wrote:
> 
> Yes, it is a number between 0 and 1.
> 
> but im calculating it, depended on 2 samples. So x and y. And if im counting 
> the 1's in x and the 1's in y, i should get the coef with return float(c)/(a1 
> + b1 - c)
> 
> But i cannot count 1's in x if x is a skalar.
> 
> 
> 
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