Global Convergence of a Modified Two-Parameter Scaled BFGS Method with Yuan-Wei-Lu Line Search for Unconstrained Optimization

Table 6

The numerical results for problems 69–74.

MTPSBFGS-YWL					SBFGS-WWP
No.	Dim	NI	NFG	CPU time	NI	NFG	CPU time
69	300	26	56	0.265625	25	54	0.21875
69	900	28	60	7.546875	25	54	6.734375
69	2700	29	62	136.421875	25	54	119.25
70	300	31	84	0.5	30	90	0.4375
70	900	40	103	11	32	88	8.46875
70	2700	33	91	146.765625	53	122	245.71875
71	300	342	894	4.171875	190	381	2.203125
71	900	1000	2572	617.34375	534	1069	145.265625
71	2700	1000	2591	7501.1875	1000	2001	4617.703125
72	300	124	313	2.53125	109	284	2.265625
72	900	283	762	94.0625	311	781	107.890625
72	2700	843	2128	4629.25	871	2163	4782.0625
73	300	95	192	1.0625	95	192	1.125
73	900	168	338	46.984375	169	340	46.765625
73	2700	296	594	1477.046875	292	586	1462.71875
74	300	37	76	0.375	36	74	0.34375
74	900	50	102	13.40625	50	102	13.484375
74	2700	81	164	396.390625	81	164	399.5625