A Better Forecast Can Choose a Worse Plan
TL;DR for operators An inventory manager can obtain accurate forecasts of stock and backlog yet still choose an inferior replenishment schedule. Forecasting future conditions, predicting how those conditions change under alternative actions, and ranking the available plans are different capabilities. ActTime: Action-Conditioned World Modeling for Time Series1 addresses this distinction by learning controlled dynamics from historical action-outcome trajectories. It then simulates alternative futures from the same observed history, without requiring paired counterfactual outcomes during training. ...