Glossary

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Glossary / Evaluation and implementation guide

Demand Forecasting

Demand forecasting produces estimates of future demand for products over a chosen horizon, using historical sales, seasonality, and other inputs. Its output is a prediction, not a decision.

Deciding how much to buy, when, and where is a separate planning step.

Forecast quality is judged by error measures such as MAPE, the mean absolute percentage error, or bias, which shows whether estimates run consistently high or low.

A practical example

Example: a team forecasts demand for a jacket line over the next quarter.

The model predicts 3,200 units; actual demand lands at 2,900, and the team records the error to see whether the model overestimates this category repeatedly.

What to evaluate before investing

  • Can forecasts be generated at the SKU and location level you actually replenish at, not only aggregated?
  • Does the tool report forecast error and bias by segment, so you can see where it performs poorly?
  • Can external inputs you rely on, like promotions or price changes, be reflected in the forecast rather than ignored?

Limitations and tradeoffs

Forecasts are probabilistic estimates with real error; treating any single number as a certainty leads to overbuying or stockouts.

Plan your next step with MeshLine

Connect this decision to your automation, organic marketing and customer lifecycle management. In a MeshLine demo, discuss your existing tools, the scope you need and how to measure the result.