Convergence Analysis of an Improved BFGS Method and Its Application in the Muskingum Model

Table 6

The numerical results for problems 69–74.

N0	Dim	MBFGS-MWWP			BFGS-WWP
		NI	NFG	CPU time	NI	NFG	CPU time
69	300	43	142	0.6875	26	81	0.3752
69	900	65	200	17.8906	28	89	7.5938
69	2700	73	222	399.7343	34	107	170.4375
70	300	358	847	9.2031	50	151	0.9218
70	900	44	159	13.8125	71	250	19.2812
70	2700	263	764	1469.7031	45	152	207.3438
71	300	163	332	2.0312	163	334	2.0938
71	900	483	975	147.3593	488	986	130.2656
71	2700	1000	2000	5118.8751	1000	2000	4951.7343
72	300	35	80	0.8281	43	94	0.7968
72	900	58	128	18.2656	57	126	18.1875
72	2700	96	208	535.1406	98	210	531.1562
73	300	133	271	2.2812	133	271	1.7031
73	900	225	455	63.8593	225	455	60.2521
73	2700	471	947	2572.9681	443	891	2325.0156
74	300	43	112	0.7187	43	112	0.5625
74	900	184	373	57.3593	184	373	50.5781
74	2700	262	529	1460.0468	262	529	1372.9375