keywords:
EXACT-CAUCHY-POINT-REQUIRED
INEXACT-CAUCHY-POINT-REQUIRED
The (approximate) solution of the subproblem at each iteration is
divided into two stages (see method section). In the first, a one
dimensional search is made along a piecewise linear arc, the Cauchy
arc. The first local optimizer of the model
function along the arc is
known as the Cauchy point.
The user may choose whether this point
should be found accurately, by using the EXACT-CAUCHY-POINT-REQUIRED
keyword, or whether a suitable approximation suffices, by including
the keyword INEXACT-CAUCHY-POINT-REQUIRED. A default