Struct Subdifferential 

pub struct Subdifferential {
    pub point: Vec<f64>,
}

Subdifferential of a convex or nonsmooth function at a point.

Fields

point: Vec<f64>

The point at which the subdifferential is evaluated.

Implementations

impl Subdifferential

pub fn new(point: Vec<f64>) -> Self

Create a new Subdifferential at the given point.

pub fn is_nonempty_at_interior(&self) -> bool

Returns whether the subdifferential is nonempty at interior points.

pub fn optimality_condition(&self) -> String

Optimality condition: 0 ∈ ∂f(x) iff x is a minimiser.