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Keyword category:

Eigenvector Following

IUPD

IUPD — Choice of update method for the Hessian matrix.

Usage

IUPD=n

Description

This keyword directs updating of the Hessian matrix during the course of optimization based on the particular value of n.
n=0 :

no update
n=1 :

Powell update (default for TS)
n=2 :

BFGS update (default for EF)

Abbreviation:

none

Requires:

EF or TS.

Required by:

none

Default value:

1 with TS; 2 with EF

See also:

EF, TS
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