Despite the improvements in statistical forecasting, human judgment remains essential in business forecasting and demand planning. Typically, forecasters do not rely solely on statistical forecasts; they also adjust forecasts according to their knowledge, experience, and information that is not...

The Bullwhip Effect, defined as the magnification of demand variability throughout the supply chain, poses a challenge to many firms. One of its contributing factors is inaccurate forecasts used to support demand planning. Forecast errors translate into higher inventory costs at a local level,...

With increased competition and shorter product life-cycles, forecasting the life-cycle sales of new products prior to launch is becoming increasingly important to marketers and demand planners. Our study contributes to the literature on new product adoption using analogies by augmenting...

Judgement plays a central role in forecasting, as statistical forecasts are often modified before informing user decisions. This is done to augment model forecasts with contextual information from the organisation and the market. There is strong evidence that judgemental adjustments can be...

Inventory systems represent an important part of firms' investments, with a direct impact on competitiveness. Inventory management intends to achieve a compromise between customer satisfaction and inventory costs. To this end, service level metrics such as the Cycle Service Level and Fill Rate...

Intermittent demand appears when demand events occur only sporadically. Typically such time series have few observations making intermittent demand forecasting challenging. Forecast errors can be costly in terms of unmet demand or obsolescent stock. Intermittent demand forecasting has been...

Intermittent demand time series involve items that are requested infrequently, resulting in sporadic demand. Croston׳s method and its variants have been proposed in the literature to address this forecasting problem. Recently other novel methods have appeared. Although the literature provides...

Shorter product life cycles and aggressive marketing, among other factors, have increased the complexity of sales forecasting. Forecasts are often produced using a Forecasting Support System that integrates univariate statistical forecasting with managerial judgment. Forecasting sales under...