LDA binary codes matching different VOCs.
| VOCs | 1st iteration | 2nd iteration | 3rd iteration | 4th iteration |
|---|---|---|---|---|
| Ethanol | 1 | 0 | 0 | 0 |
| Acetone | 0 | 1 | 0 | 0 |
| Isopropanol | 0 | 0 | 1 | 0 |
| Methanol | 0 | 0 | 0 | 1 |
| Toluene | 0 | 0 | 0 | 0 |
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