Rob J Hyndman, Anne B Koehler, J Keith Ord, Ralph D Snyder (Springer, 2008). .verticalhorizontal { display: table-cell; vertical-align: middle; } Exponential smoothing methods have been around since the 1950s, and are still the most popular forecasting methods used in business and industry. However, a modelling framework incorporating stochastic models, likelihood calculation, prediction intervals and procedures for model selection, was not developed until relatively …