指数	方法	RMSE	MAE	MAPE	R²	CPU_TIME
SSEC	LSTM	49.42934	35.31324	0.011873	0.96442	23.1411
	EMD-LSTM	23.95438	18.13328	0.005658	0.99013	223.3267
	CEEMDAN-LSTM	22.28871	17.04217	0.005321	0.99117	251.4321
	PSO-LSTM	37.32633	28.67844	0.008327	0.98231	87.2213
	Proposed	19.8797	15.97543	0.004864	0.99265	312.2543
S&P500	LSTM	81.26213	61.74108	0.016926	0.98123	24.8193
	EMD-LSTM	42.55853	36.1823	0.009753	0.98923	210.2357
	CEEMDAN-LSTM	38.19496	30.15249	0.008044	0.99133	224.3283
	PSO-LSTM	56.5458	43.5343	0.011476	0.98332	86.2342
	Proposed	29.68454	23.67231	0.005786	0.99469	340.2357
FTSE	LSTM	104.35234	69.87963	0.010234	0.96587	29.5431
	EMD-LSTM	57.52134	45.23177	0.006992	0.98942	221.8734
	CEEMDAN-LSTM	52.41531	38.58732	0.005913	0.99123	241.3278
	PSO-LSTM	85.87344	56.34467	0.008754	0.98153	92.2211
	Proposed	46.6532	32.53211	0.004776	0.99321	322.3211
N225	LSTM	490..01216	357.3127	0.014324	0.97535	30.4321
	EMD-LSTM	241.63233	186.28561	0.007233	0.99113	287.3124
	CEEMDAN-LSTM	188.62348	147.78641	0.005864	0.99225	333.7655
	PSO-LSTM	348.58122	269.38194	0.010947	0.98543	93.3532
	Proposed	167.06532	131.31241	0.004611	0.99523	418.7983
DAX	LSTM	232.01216	165.22418	0.012901	0.97533	30.6483
	EMD-LSTM	152.60336	126.33213	0.009394	0.98978	221.2357
	CEEMDAN-LSTM	124.58732	91.52134	0.006912	0.99134	236.6912
	PSO-LSTM	197.34513	135.26432	0.010557	0.98175	86.2312
	Proposed	101.54321	79.89764	0.005321	0.99404	347.1238