jaxopt.prox.prox_non_negative_lasso
- jaxopt.prox.prox_non_negative_lasso(x, l1reg=None, scaling=1.0)[source]
Proximal operator for the l1 norm on the non-negative orthant.
\[\underset{y \ge 0}{\text{argmin}} ~ \frac{1}{2} ||x - y||_2^2 + \text{scaling} \cdot \text{l1reg} \cdot ||y||_1\]- Parameters
x (
Any) – input pytree.l1reg (
Optional[float]) – regularization strength.scaling (
float) – a scaling factor.
- Return type
Any- Returns
output pytree, with the same structure as
x.