pub trait ValueDifferentiableKernel<T>: PositiveDefiniteKernel<T> where
    T: Value
{ fn ln_diff_value(
        &self,
        params: &[f64],
        x: &Vec<f64>,
        xprime: &Vec<f64>
    ) -> Result<Vec<f64>, KernelError>; }

Required methods

Implementors