Nn3.zip -

It is a standard historical benchmark in the forecasting community and is often included in modern research packages like the tscompdata R package on GitHub.

The historical data is typically provided in vertical columns of varying lengths. nn3.zip

Includes a wide range of real-world business patterns (e.g., industry data), making it a robust test for model generalization. It is a standard historical benchmark in the

The "masked" nature of the data (anonymized origin) ensures that models must rely on time series patterns rather than domain-specific knowledge. Practical Considerations nn3.zip

11 monthly time series used as a small-scale pilot.