The average dependencies of PPV, Se and χ2 criterion on the total number of links for arbitrary networks. Network topology: (a) random and (b) scale free. Inference models: differential (blue) and integral with the zero-degree polynomial kernel (red). The black lines indicate the inference by the integral model with the zero-degree polynomial kernel from permuted data. Confidence intervals for the obtained PPV, Se and χ2 estimates are shown as dashed lines.