-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathBT7.SIF
165 lines (111 loc) · 2.73 KB
/
BT7.SIF
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
***************************
* SET UP THE INITIAL DATA *
***************************
NAME BT7
* Problem :
* *********
* Source: problem 7 in
* P.T. Boggs and J.W. Tolle,
* "A strategy for global convergence in a sequential
* quadratic programming algorithm",
* SINUM 26(3), pp. 600-623, 1989.
* The problem is not convex.
* SIF input: Ph. Toint, June 1993.
* classification OQR2-AN-5-3
VARIABLES
X1
X2
X3
X4
X5
GROUPS
N OBJ1 X2 1.0
N OBJ1 'SCALE' 0.01
N OBJ2 X1 1.0
E CON1
E CON2 X1 1.0
E CON3 X1 1.0
CONSTANTS
BT7 OBJ2 1.0
BT7 CON1 1.0
BT7 CON3 0.5
BOUNDS
FR BT7 'DEFAULT'
START POINT
* Start 1
XV BT7 X1 -2.0
XV BT7 X2 1.0
XV BT7 X3 1.0
XV BT7 X4 1.0
XV BT7 X5 1.0
* Start 2
*XV BT7 X1 -20.0
*XV BT7 X2 10.0
*XV BT7 X3 1.0
*XV BT7 X4 1.0
*XV BT7 X5 1.0
* Solution proposed in paper
* (corresponding to an objective value of 360.3665439)
*XV BT7 X1 -0.79212
*XV BT7 X2 -1.2624
*XV BT7 X3 0.0
*XV BT7 X4 -0.89532
*XV BT7 X5 1.1367
ELEMENT TYPE
EV SQ X
EV 2PR X Y
ELEMENT USES
T X1SQ SQ
V X1SQ X X1
T X2SQ SQ
V X2SQ X X2
T X3SQ SQ
V X3SQ X X3
T X4SQ SQ
V X4SQ X X4
T X5SQ SQ
V X5SQ X X5
T X1X2 2PR
V X1X2 X X1
V X1X2 Y X2
GROUP TYPE
GV L2 GVAR
GROUP USES
T OBJ1 L2
E OBJ1 X1SQ -1.0
T OBJ2 L2
E CON1 X3SQ -1.0 X1X2
E CON2 X4SQ -1.0 X2SQ
E CON3 X5SQ
OBJECT BOUND
* Solution ( for a lower objective value than that
* corresponding to the solution quoted in the paper)
*LO SOLTN 306.49640688
ENDATA
***********************
* SET UP THE FUNCTION *
* AND RANGE ROUTINES *
***********************
ELEMENTS BT7
INDIVIDUALS
T SQ
F X * X
G X 2.0 * X
H X X 2.0
T 2PR
F X * Y
G X Y
G Y X
H X Y 1.0
ENDATA
*********************
* SET UP THE GROUPS *
* ROUTINE *
*********************
GROUPS BT7
INDIVIDUALS
T L2
F GVAR * GVAR
G GVAR + GVAR
H 2.0
ENDATA