Dakota Reference Manual: singular_radius

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singular_radius

Singular radius

## Specification

Alias: none

Argument(s): REAL

Default: -1. (use NL2SOL internal default of 1)

## Description

`singular_radius` works in conjunction with singular_conv_tol to test for underdetermined least-squares problems (stop when the relative reduction yet possible in the sum of squares appears less than `singular_conv_tol` for steps of scaled length at most singular_radius).

The internal default results in the internal use of steps of length 1. The default is selected with a value of -1.