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Dakota Reference Manual
Version 6.16
Explore and Predict with Confidence
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Suppresses output of sensitivity indices with values lower than this tolerance
Alias: none
Argument(s): REAL
Default: All VBD indices displayed
The drop_tolerance keyword allows the user to specify a value below which sensitivity indices generated by variance_based_decomp are not displayed.
Default Behavior
By default, all sensitivity indices generated by variance_based_decomp are displayed.
Usage Tips
For polynomial_chaos, which outputs main, interaction, and total effects by default, the univariate_effects may be a more appropriate option. It allows suppression of the interaction effects since the output volume of these results can be prohibitive for high dimensional problems. Similar to suppression of these interactions is the covariance control, which can be selected to be diagonal_covariance or full_covariance, with the former supporting suppression of the off-diagonal covariance terms (to save compute and memory resources and reduce output volume).
method,
sampling
sample_type lhs
samples = 100
variance_based_decomp
drop_tolerance = 0.001