.. _method-bayes_calibration-muq-mala-step_size:

"""""""""
step_size
"""""""""


Parameter for the MALA MCMC algorithm in MUQ



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



**Specification**

- *Alias:* None

- *Arguments:* REAL

- *Default:* 1.0


**Description**


The step size parameter tau in the preconditioned Langevin proposal xCandidate = xCurrent + tau M \grad \ln \pi(xCurrent) + \sqrt(2 tau) M^{1/2} z,
where M is the proposal covariance and z is a standard normal random variable.