group_throttle

Reduce the number of groups in multilevel BLUE using a throttle

Specification

  • Alias: None

  • Arguments: None

Child Keywords:

Required/Optional

Description of Group

Dakota Keyword

Dakota Keyword Description

Required (Choose One)

Throttle Approach

mfmc_groups

Throttle multilevel BLUE to only search over MFMC groups

common_groups

Throttle multilevel BLUE to only search over common groups

group_size

Throttle multilevel BLUE to only search over groups of a maximum size

Description

The number of groups in ML BLUE is, by default, determined by all combinations of the model indices, spanning the truth model and all approximations. This combinatorial growth quickly results in very large group counts as the number of model approximations grows. This number of combinations may be optionally throttled using one of the following schemes: mfmc_groups, common_groups, or group_size.

Default Behavior

The default is no throttle: all model combinations are included.