Dakota Reference Manual: values

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values

Specifies matrix values to use as the MCMC proposal covariance.

## Specification

Alias: none

Argument(s): REALLIST

Child Keywords:

| Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description
--- | --- | --- | --- | ---
| Required (Choose One) | Values For (Group 1) | 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