Dakota Reference Manual: pilot_samples

| Dakota Reference Manual Version 6.15 Explore and Predict with Confidence

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pilot_samples

Initial set of samples for multilevel/multifidelity sampling methods.

## Specification

Alias: initial_samples

Argument(s): INTEGERLIST

## Description

The pilot sample provides initial estimates of variance and/or correlation within the first iteration of a multilevel/multifidelity sampling approach. These initial estimates then guide the algorithm toward additional sample increments in order to iteratively achieve a prescribed error at minimum total cost, or alternatively, minimum error for a prescribed budget.

Default Behavior

100 samples per model fidelity and/or discretization level.

Usage Tips

The number of specified values can be none (default values used for all fidelities and levels), one (all fidelities and levels use the same specified value), the number of discretization levels for every model (each model uses the same discretization level profile), or the aggregate number of discretization levels for all models (samples for each discretization level are distinct for each model).