Collaborative Intelligence: Harnessing the power of combined models

Collaborative Intelligence: Harnessing the power of combined models


aXialyze saw a new way to combine forecasting methods in retail supply chain management. Tremendous value can be created by combining existing methods that are practically computable in a retail environment with thousands of forecasts to be generated on a frequent basis.

Moreover, instead of just using simple combination models, aXialyze makes use of Ensemble Learning techniques. Hence, individual models are combined with multiple machine-learning models to improve the stability and predictive power of the forecasting model.

Finally, one can complete the value of this method for decision making by differentiating treatment of products based on their ABC rotation classification. You can however also go beyond that and apply the preffered bias at article level using an item-by-item approach.

To harness the power of this approach, we introduce an asymmetric loss function to bias the model towards a specific treatment for each product category. Hence, you can individualise the learning method for each article.

This was the last step in creating tools that can be individualised to the product categories based on ABC and hence let you decide on the most efficient stock level.

  • Products in very high demand (A) can never be stocked out
    hence the forecast is biased towards overprediction, eliminating variability in demand.
  • Products in low demand (C) often just take up space and tie up capital
    hence the forecast is biased towards underprediction, enhancing profitability without losing customer loyalty.


Employing combination techniques in forecasting had an essential impact on the two key profitability drivers in the business, product availability and stock levels. Boosted accuracy allowed for more efficient inventory management, which in turn translates into an improvement in service level while reducing safety stock.

This showed that efficiently putting consumer expectations and needs at the centre of inventory planning can even have economic benefits, improving your business performance.

Talk to an expert

Contact Marie to discuss how you can use your data to boost forecast accuracy for more efficient inventory management and improve service levels while reducing safety stock needs.

Marie Maes MSc
Consultant – Expert Data Science

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