This function implements the Exponential map to calculate \(\hat{F}_t(u)\) for a fixed \(u\)
Exp_Map_Barycenter_Method_pw(u, forecast, cdf)A numeric value \(\hat{F}_t(u)\)
The value where the cdf \(\hat{F}\) is evaluated
A vector that contains the WAR(p) model forecast result
The quantile grid used in forecasting
Wasserstein Autoregressive Models for Density Time Series, Chao Zhang, Piotr Kokoszka, Alexander Petersen, 2022