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BIGGSC4.SIF
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***************************
* SET UP THE INITIAL DATA *
***************************
NAME BIGGSC4
* Problem:
* ********
* A test quadratic test problem (invented starting point).
* Source:
* M. Batholomew-Biggs and F.G. Hernandez,
* "Some improvements to the subroutine OPALQP for dealing with large
* problems",
* Numerical Optimization Centre, Hatfield, 1992.
* SIF input: Ph Toint, April 1992.
* classification QLR2-AN-4-7
IE 1 1
IE 4 4
VARIABLES
DO I 1 4
X X(I)
OD I
GROUPS
XN OBJ
XG C1 X1 1.0 X2 1.0
XG C2 X1 1.0 X3 1.0
XG C3 X1 1.0 X4 1.0
XG C4 X2 1.0 X3 1.0
XG C5 X2 1.0 X4 1.0
XG C6 X3 1.0 X4 1.0
XG C7 X1 1.0 X2 1.0
XG C7 X3 1.0 X4 1.0
CONSTANTS
X BIGGSC4 C1 2.5
X BIGGSC4 C2 2.5
X BIGGSC4 C3 2.5
X BIGGSC4 C4 2.0
X BIGGSC4 C5 2.0
X BIGGSC4 C6 1.5
X BIGGSC4 C7 5.0
RANGES
X BIGGSC4 C1 5.0
X BIGGSC4 C2 5.0
X BIGGSC4 C3 5.0
X BIGGSC4 C4 5.0
X BIGGSC4 C5 5.0
X BIGGSC4 C5 5.0
X BIGGSC4 C6 5.0
BOUNDS
UP BIGGSC4 'DEFAULT' 5.0
ELEMENT TYPE
EV 2PR U V
ELEMENT USES
T E1 2PR
V E1 U X1
V E1 V X3
T E2 2PR
V E2 U X2
V E2 V X4
GROUP USES
E OBJ E1 -1.0 E2 -1.0
OBJECT BOUND
* Solution
*LO BIGGSC4 -24.5
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS BIGGSC4
INDIVIDUALS
T 2PR
F U * V
G U V
G V U
H U V 1.0
ENDATA