.. _method-polynomial_chaos-expansion_order-collocation_ratio-least_absolute_shrinkage-l2_penalty:

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l2_penalty
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The :math:`l_2`  pentalty used when performing compressed sensing with elastic net.


.. toctree::
   :hidden:
   :maxdepth: 1



**Specification**

- *Alias:* None

- *Arguments:* REAL

- *Default:* 0. (reverts to standard LASSO formulation)


**Description**


The :math:`l_2`  pentalty used when performing compressed sensing with elastic net.


