Assessing the Influence Level of Food Safety Public Opinion with Unbalanced Samples Using Ensemble Machine Learning

Table 2

Comparison of meta-learners.

Meta-learner	Evaluation index
	Accuracy	Precision	Recall	F1
KNN	0.8357	0.8364	0.8357	0.8360
SVM	0.8500	0.8506	0.8500	0.8502
NB	0.8530	0.8541	0.8530	0.8534