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# values

Specifies matrix values to use as the MCMC proposal covariance.

Specification

- Alias: None

- Arguments: REALLIST

Child Keywords:

Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description
--- | --- | --- | ---
Required (Choose One) | Values For | diagonal | Specifies the diagonal matrix format when specifying a user-specified proposal covariance.
matrix | Specifies the full matrix format when specifying a user-specified proposal covariance.

Description

This keyword selection results in definition of the MCMC proposal covariance from user-specified matrix values. The matrix input format must be declared as either a full matrix or a matrix diagonal.

Default Behavior

This option is not the default, and generally implies special a priori knowledge from the user.

Usage Tips

This option is not supported for the case of transformations to standardized probability space.

Examples

    method,
            bayes_calibration queso
             samples = 1000 seed = 348
              dram
              proposal_covariance
                values ... # See leaf nodes for required format option

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