solution_mode

Solution mode for multilevel/multifidelity methods

Specification

• Alias: None

• Arguments: None

• Default: online pilot

Child Keywords:

Required/Optional	Description of Group	Dakota Keyword	Dakota Keyword Description
Required (Choose One)	Ensemble Sampling Solution Mode	online_pilot	Specify a solution mode that includes the pilot cost within the sample allocation logic
		offline_pilot	Specify a solution mode that excludes the pilot cost from sample allocation logic
		online_projection	Specify a solution mode that estimates performance based on projecting initial correlation / covariance estimates from an online pilot sample
		offline_projection	Specify a solution mode that estimates performance based on projecting initial correlation/variance estimates from an offline pilot sample

Description

Multilevel / multifidelity sampling methods are adaptive UQ methods that utilize a pilot sample to estimate an initial set of correlations or variances, and then augment the pilot with additional sample increments to optimally allocate resources. The pilot sample can be integrated according to one of three solution modes:

• online_pilot: include pilot sample cost within sample allocation (default)

• offline_pilot: treat pilot cost as offline and exclude from sample allocation

• pilot_projection: only perform the pilot sample and only estimate the expected performance based on a projection of the pilot statistics (useful for method selection)

Default Behavior Online pilot