solarforecastarbiter.metrics.deterministic.combined_performance_index

solarforecastarbiter.metrics.deterministic.combined_performance_index(obs, fx)[source]

Combined Performance Index (CPI) metric.

\[\text{CPI} = (\text{KSI} + \text{OVER} + 2 * \text{RMSE}) / 4\]
Parameters:
  • obs ((n,) array-like) – Observed values.
  • fx ((n,) array-like) – Forecasted values.
Returns:

cpi (float) – The CPI between the true and predicted values.