PFP-LHCINCA: Pyramidal Fixed-Size Patch-Based Feature Extraction and Chi-Square Iterative Neighborhood Component Analysis for Automated Fetal Sex Classification on Ultrasound Images

Table 4

Performance metrics of PFP-LHCINCA model by classifier type.

Classifier	Accuracy (%)	Precision (%)	Recall (%)	F1 score (%)
kNN	99.11	99.11	99.12	99.11
LD	91.21	91.70	91.15	91.43
NB	89.12	89.81	89.05	89.43
SVM	98.51	98.54	98.53	98.53
DT	88.52	88.66	88.49	88.58

kNN: k-nearest neighbor; LD: linear discriminant; NB: naïve Bayes; SVM: support vector machine; DT: decision tree.