$OVARF, $SVARF

Specifies the weighting to the standard deviations of OMEGA and SIGMA, respectively.

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   $OVARF 0 (default)
   $OVARF [value ... ]
   $OVARF [(value)[xn]] ...

   $SVARF 0 (default)
   $SVARF [value ... ]
   $SVARF [(value)[xn]] ...

  ;# EXAMPLE
   $SVARF 2.0 5.0
   $OVARF 2.0 5.0

The example specifies 2.0 for the first OMEGA block, 5.0 for the second, and same for SIGMA.

DISCUSSION

If the corresponding $OLKJDF value is negative $OVARF is argument STDSSP in user-defined OMEGA_STD_PRIORU.f90. Similarly, If the corresponding [[file:/docs/reference-manual/control-records/slkjdf/][record $SLKJDF]] value is negative then $SVARF is argument STDSSP in user-defined SIGMA_STD_PRIORU.f90.

$OVARF and $SVARF are separate records that allow the user to specify the weighting (inverse variance) to the standard deviations LKJ decorrelation degrees of freedom for each OMEGA block and SIGMA block. Used with NUTS method.

The corresponmding OVARF and SVARF options override the these control records.