Table 4. Classification accuracy (%) of Beijing You Chicken and Dwarf Beijing You Chicken eggs based on different algorithms

Classification algorithm	Fatty acid	Volatile compound
		SPME-GC-MS	Electronic nose
KNN	91.7	50.0	100
LDA	83.3	-	100
SVM	91.7	16.7	100
Decision tree	50.0	33.3	100

SPME-GC-MS, solid-phase microextraction-gas chromatography-mass spectrometry; KNN, k-nearest neighbor; LDA, linear discriminant analysis; SVM, support vector machine.