Table 2.
Top 10 accuracy, sensitivity and specificity -based combinations of VOCs.
| Rank of accuracy | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Accuracy | 0.796 | 0.786 | 0.781 | 0.781 | 0.781 | 0.781 | 0.781 | 0.776 | 0.776 | 0.776 |
| Sensitivity | 0.765 | 0.714 | 0.694 | 0.724 | 0.724 | 0.714 | 0.714 | 0.714 | 0.653 | 0.653 |
| Specificity | 0.827 | 0.857 | 0.867 | 0.837 | 0.837 | 0.847 | 0.847 | 0.837 | 0.898 | 0.898 |
| VOCs | Acetone | Acetone | Acetone | Acetone | Acetone | Acetone | Acetone | Acetone | Acetone | Acetone |
| 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | 1,4-Pentadiene | n-Hexane | n-Hexane | |
| Phenol | Phenol | Phenol | Phenol | Phenol | Phenol | Phenol | Phenol | Dimethyl sulfide | Dimethyl sulfide | |
| Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | 1-Propene | 1-Propene | |
| Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | Allyl methyl sulfide | N,N-Dimethylacetamide | N,N-Dimethylacetamide | |
| Benzene | Camphene | D-Limonene | Cyclopentane, methyl | Pentane | Cyclopentane | Cyclopentane,1,3-dimethyl | Camphor | Camphor | Camphor |
| Rank of sensitivity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Accuracy | 0.520 | 0.520 | 0.520 | 0.520 | 0.520 | 0.520 | 0.520 | 0.520 | 0.515 | 0.515 |
| Sensitivity | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 | 0.980 |
| Specificity | 0.061 | 0.061 | 0.061 | 0.061 | 0.061 | 0.061 | 0.061 | 0.061 | 0.051 | 0.051 |
| VOCs | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester | Acetic acid, methyl ester |
| Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | Methylene chloride | |
| Phenol | Dimethyl sulfide | Dimethyl sulfide | Dimethyl sulfide | Dimethyl sulfide | Dimethyl sulfide | Dimethyl sulfide | 2-Pentanone | Dimethyl sulfide | Dimethyl sulfide | |
| Benzene | 1-Propene | 1-Propene | 1-Propene | 1-Propene | 1-Propene | 1-Propene | Camphor | 1-Propene | 1-Propene | |
| Cyclopentane | Benzene | Cyclopentane | 2-Pentanone | Cyclopentane | Pentane | Cyclopentane | Cyclopentane | Pentane, 2-methyl- | Cyclopentane | |
| Pentane | Pentane | Pentane, 2-methyl- | Pentane, 2-methyl- | Pentane | 2-Pentanone | 2-Pentanone | Cyclopentane,1,3-dimethyl- | 2-Butanone | 2-Butanone |
| Rank of specificity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
|---|---|---|---|---|---|---|---|---|---|---|
| Accuracy | 0.566 | 0.556 | 0.551 | 0.546 | 0.546 | 0.546 | 0.536 | 0.536 | 0.526 | 0.526 |
| Sensitivity | 0.133 | 0.112 | 0.102 | 0.092 | 0.092 | 0.092 | 0.071 | 0.071 | 0.051 | 0.051 |
| Specificity | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 | 1.000 |
| VOCs | Camphene | Camphene | Camphene | Camphene | Camphene | Camphene | Camphene | Camphene | Camphene | Camphene |
| Cyclopentane, methyl | Cyclopentane, methyl | Cyclopentane, methyl | Cyclopentane, methyl | Cyclopentane, methyl | Cyclopentane, methyl | Cyclopentane, methyl | Methylene chloride | Benzene | Acetonitrile | |
| 2-Pentanone | 2-Butanone | Acetonitrile | Benzene | 2-Pentanone | 2-Pentanone | 2-Pentanone | 2-Pentanone | 2-Pentanone | 2-Pentanone | |
| Dimethyl sulfide | Dimethyl sulfide | Dimethyl sulfide | Methylene chloride | Methylene chloride | Cyclopentane | Dimethyl sulfide | Dimethyl sulfide | Pentane | Pentane | |
| Acetonitrile | Phenol | Phenol | Cyclopentane | Benzene | Acetic acid, methyl ester | Phenol | Cyclopentane | Phenol | Phenol | |
| Cyclopentane,1,3-dimethyl | Cyclopentane,1,3-dimethyl | n-Hexane | Cyclopentane,1,3-dimethyl | Cyclopentane,1,3-dimethyl | Cyclopentane,1,3-dimethyl | n-Hexane | n-Hexane | Acetonitrile | Cyclopentane |