.. _model-surrogate-global-gaussian_process-surfpack-correlation_lengths: """"""""""""""""""" correlation_lengths """"""""""""""""""" Specify the correlation lengths for the Gaussian process .. toctree:: :hidden: :maxdepth: 1 **Specification** - *Alias:* None - *Arguments:* REALLIST - *Default:* internally computed correlation_lengths **Description** Directly specify ``correlation_lengths`` as a list of N real numbers where N is the number of input dimensions.