Table 1.

Accuracy improvement of cascaded SOM network.

Network parameter	MNIST	USPS	Fashion MNIST (%)
Parameter setting A	2.68	3.89	−0.51
Parameter setting B	5.83	6.23	1.43
Parameter setting C	10.51	11.05	4.63

A: iteration number of the first layer: 30; iteration number of the second layer: 30; number of the first-layer networks: 10; network size: 10 × 10. B: iteration number of the first layer: 50; iteration number of the second layer: 50; number of the first-layer networks: 10; network size: 15 × 15. C: iteration number of the first layer: 50; iteration number of the second layer: 50; number of the first-layer networks: 20; network size: 20 × 20.