Dakota Reference Manual: trial_type

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trial_type

Specify how the trial samples are generated

## Specification

Alias: none

Argument(s): none

Default: random

Child Keywords:

| Required/Optional | Description of Group | Dakota Keyword | Dakota Keyword Description
--- | --- | --- | --- | ---
| Required (Choose One) | Trial Type (Group 1) | grid | Samples on a regular grid
halton | Generate samples from a Halton sequence
random | Uses purely random Monte Carlo sampling to sample variables

## Description

The user has the option to specify the method by which the trials are created to adjust the centroids. The `trial_type` can be one of three types:

- `random`, where points are generated randomly
- `halton`, where points are generated according to the Halton sequence
- `grid`, where points are placed on a regular grid over the hyperspace.