Table 2: Recognition performances of different methods.

Compare itemsRecognition methods
ENNMNN-1MNN-2MNN-3K-means

Structure34-3034-33-3034-34-3034-35-30N/A
No. of connections2040211221762240N/A
Learning times (epochs)86100010001000N/A
Learning accuracy100%91%93%95%70%
Testing accuracy99%88%90%86%68%