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Table 1
Distribution of data set D1.
| S / N | Data set | Type | Subclasses | Number |
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| Stars | Early-type | 2000 | ||
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| Late-type | 1000 | |||
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| Galaxy | Starforming | 1000 | ||
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| S/N> 20 | D1 | Starburst | 1000 | |
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| AGN | 1000 | |||
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| QSO | 3000 | |||
Notes. The detailed information of data sets D2 (10 <S/N ≤ 20), D3 (0 <S/N ≤ 10), D4 (S/N> 20), D5 (10 <S/N ≤ 20), and D6 (0 <S/N ≤ 10) are the same as that of D1.
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