books.google.com.au - Computer application techniques are applied to routine short-term forecasting and prediction in this classic of operations research. The text begins with a consideration of data sources and sampling intervals, progressing to discussions of time series models and probability models. An extensive overview...http://books.google.com.au/books/about/Smoothing_Forecasting_and_Prediction_of.html?id=XXFNW_QaJYgC&q=forecast+errors&utm_source=gb-gplus-shareSmoothing, Forecasting and Prediction of Discrete Time Series