Nn3.zip

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

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. nn3.zip

The historical data is typically provided in vertical columns of varying lengths. 11 monthly time series used as a small-scale pilot

111 monthly time series, including the 11 from the reduced set. nn3.zip

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

The series vary in length (68 to 144 observations) and include seasonal, non-seasonal, and "difficult" patterns with outliers and structural breaks. Key Strengths