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Modified Extensible Lattice Sequence

Modified Extensible Lattice Sequence

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Modified Extensible Lattice Sequence

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A lattice sequence is a quasi-random sequence, or low discrepancy sequence, designed to equally spread out points in a space by minimizing clumps and empty spaces. This property makes lattice sequences an excellent space filling Stochastic scheme.

 

Usability Characteristics

•MELS sampling is an efficient sampling method that provides reliable estimates of output statistics using fewer samples than random sampling.
•A correlation structure can be specified to reflect the correlation existing between random variables. Applying a correlation structure can be costly for a large number of input variables.

 

Settings

In the Specifications step, you can change the following settings of Simple Random from the Settings tab.

Parameter

Default

Range

Description

Number of Runs

(npt)

100

> 0

Number of designs to be evaluated.

Random Seed

(iseed)

1

Integer

0 to 10000

Controlling repeatability of runs depending on the way the sequence of random numbers is generated.

0      random (non-repeatable)

> 0   triggers a new sequence of pseudo-random numbers, repeatable if the same number is specified.

Apply User Correlations

true

true or false

Apply user specified correlations on the data.