Table 1 Data characteristics related to different gemstones for statistical modeling in two cases of before and after combining.
Stone | Agate | Calcite | Turquoise | Lapis lazuli |
|---|---|---|---|---|
Number of spectra before combining | 43 | 20 | 59 | 46 |
Number of features after combining | 1806 | 380 | 3422 | 2070 |