TABLE 5.

Importance ranking of volatile organic compounds (VOCs) for classifying narcissi by random forest algorithm, based on mean decreasing accuracy (MDA).

Rank	VOCs	Class	MDA
1	Indole	Amine	14.56
2	D-Limonene	Monoterpene	13.52
3	Cinnamyl acetate	Phenylpropanoid	12.81
4	β-myrcene	Monoterpene	12.65
5	Benzenepropyl acetate	Phenylpropanoid	12.57
6	Benzyl acetate	Benzenoid	11.33
7	Prenyl acetate	Terpene	11
8	β-Phenethyl acetate	Phenylpropanoid	10.92
9	Benzenepropanol	Phenylpropanoid	10.35
10	3,4-Dimethyl 2,4,6-octatriene	Monoterpene	10.25
11	α-Pinene	Monoterpene	10.04
12	Ocimene	Monoterpene	3.72
13	Linalool	Monoterpene	3.53
14	Eucalyptol	Monoterpene	0.83