[Retracted] The Application of Artificial Intelligence Oriented to the Internet of Things Technology in the Complexity of Digital Crossborder Trade

Table 5

Accuracy results of different feature dimensions of the second layer.

Top n	Important feature dimension	Set accuracy	Test set accuracy	Running time (s)
Top 2	5	0.9323	0.8963	13.53
	10	0.9446	0.9004	16.25
	20	0.9529	0.9281	23.43
	40	0.9555	0.9389	29.05
	60	0.9565	0.9420	33.81
	All	0.9592	0.9436	90.24
Top 3	5	0.9406	0.9002	20.85
	10	0.9608	0.9055	24.43
	20	0.9750	0.9441	33.40
	40	0.9827	0.9633	44.23
	60	0.9827	0.9667	53.21
	All	0.9869	0.9694	153.44
Top 4	5	0.9503	0.9018	27.56
	10	0.9658	0.9070	31.13
	20	0.9845	0.9547	40.06
	40	0.9936	0.9733	56.24
	60	0.9937	0.9778	63.46
	All	0.9999	0.9807	210.82