R functions to calculate the symmetric extremal dependence index (SEDI) and its confidence interval.
Please cite:
Wunderlich, R. F., Lin, Y. P., Anthony, J., & Petway, J. R. (2019). Two alternative evaluation metrics to replace the true skill statistic in the assessment of species distribution models. Nature Conservation, 35, 97-116.
Ferro, C. A., & Stephenson, D. B. (2011). Extremal dependence indices: Improved verification measures for deterministic forecasts of rare binary events. Weather and Forecasting, 26(5), 699-713.