Before revision:  However, there is disagreement on the statistical significance of these motifs and the methods used to determine it . Exponential random graph models (ERGMs) are a class of statistical model that can overcome some of the shortcomings of commonly used methods for testing the statistical significance of motifs.
After revision:  However, there is disagreement on the statistical significance of these motifs , and there are potential problems with standard methods for estimating this significance . Exponential random graph models (ERGMs) are a class of statistical model that can overcome some of the shortcomings of commonly used methods for testing the statistical significance of motifs.