Before revision:  PGBM achieves accurate probabilistic estimates in tasks with complex differentiable loss functions, such as hierarchical time series problems, where we observed up to 10  %DIF < improvement in point forecasting performance and up to 300\\% improvement in probabilistic forecasting performance.abstract 
After revision:  PGBM achieves accurate probabilistic estimates in tasks with complex differentiable loss functions, such as hierarchical time series problems, where we observed up to 10  %DIF < improvement in point forecasting performance and up to 300\\% improvement in probabilistic forecasting performance.abstract \% improvement in point forecasting performance and up to 300\% improvement in probabilistic forecasting performance.