Function functional_mse 

pub fn functional_mse(
    y_true: &FdMatrix,
    y_pred: &FdMatrix,
    argvals: &[f64],
) -> Result<f64, FdarError>

Functional Mean Squared Error integrated over argvals.

Computes functional_mse = (1/n) * sum_i ∫ (y_true_i(t) - y_pred_i(t))^2 dt where the integral is approximated by Simpson’s rule over argvals.

Errors

• FdarError::InvalidDimension if shapes of y_true, y_pred, or argvals are inconsistent or n < 1 / m < 2.