Table 1 Comparison between classical and granule-based forecasting approaches.

From: Electric-load forecasting using interval models based on granularity and justifiable principles

Aspect

Classical forecasting (point-based)

Proposed granule-based forecasting

Forecast output

Single prediction \(\hat{y}_i\)

Interval \([\hat{y}_i - \delta _i, \hat{y}_i + \delta _i]\)

Uncertainty quantification

Absent

Explicit and interpretable

Distribution assumption

Often assumed (e.g. Gaussian)

Not required

Robustness

Sensitive to noise

Robust to variability

Interpretability

Low

High (semantic meaning of width)

Metrics

RMSE, MAE

Justification Score