An Improved Elman Network for Stock Price Prediction Service

Table 1

Relative error of test (Shanghai composite index).

Number	1	2	3	4	5	6	7
Relative error	0.006674	−0.001090	0.010719	−0.010057	−0.025153	0.001690	0.000677
Number	8	9	10	11	12	13	14
Relative error	0.012402	−0.003898	−0.002381	−0.015004	−0.023218	−0.007697	−0.002238
Number	15	16	17	18	19	20	21
Relative error	0.009203	−0.000263	−0.009339	0.000532	−0.022964	−0.000520	0.007789
Number	22	23	24	25	26	27	28
Relative error	0.006250	−0.004937	0.023693	−0.000488	0.004250	−0.005476	−0.003717
Number	29	30	31	32	33	34	35
Relative error	−0.005492	0.003612	0.001676	0.010246	−0.009194	0.010889	−0.007296
Number	36	37	38	39	40	41	42
Relative error	−0.006752	−0.008459	−0.001553	−0.000139	−0.003553	0.004742	0.005815
Number	43	44	45	46	47	48	49
Relative error	0.013786	0.014388	0.014745	0.000828	−0.010776	0.005480	−0.012749
Number	50	51	52	53	54	55	56
Relative error	0.009279	−0.004690	0.000227	−0.006596	−0.019610	−0.002958	−0.001138
Number	57	58	59	60	61	62	63
Relative error	0.000246	−0.007637	0.009974	−0.016051	0.002405	−0.002644	0.003361
Number	64	65	66	67	68	69	70
Relative error	−0.015557	−0.002587	−0.012756	−0.009015	−0.007153	−0.009234	−0.001688
Number	71	72	73	74	75	76	77
Relative error	0.002176	−0.008728	−0.003110	0.015200	−0.002282	−0.005979	−0.006169
Number	78	79	80	81	82	83
Relative error	0.009414	−0.002398	0.010743	0.006008	−0.001105	0.006332