Dakota Reference Manual: matrix

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matrix

Specifies the full matrix format when specifying a user-specified proposal covariance.

## Specification

Alias: none

Argument(s): none

## Description

When specifying the MCMC proposal covariance in an input file, this keyword declares the use of a full matrix format, i.e., the user provides all values of the matrix, not just the diagonal. The matrix must be symmetric, positive-definite.

## Examples

    method,
            bayes_calibration queso
             samples = 1000 seed = 348
              dram
              proposal_covariance
                matrix values 1.0 0.1
                              0.1 2.0