2S-SGCN	Two-stage stratified graph convolutional network
AUPRC	Area under the precision–recall curve
AUROC	Area under the receiver operating characteristic curve
CI	Confidence interval
ECE	Expected calibration error
GPU	Graphics processing unit
ICP	Iterative closest point
KNN	k-nearest neighbors
MLP	Multilayer perceptron
MoE	Mixture of experts
OASR	Occlusion-aware and structure-robust model
RGB-D	Red–green–blue and depth
RMSE	Root mean square error
SD	Standard deviation
SLG-GCN	Sparse local–global graph convolutional network
SVD	Singular value decomposition
SurF	Surface feature descriptor
XYZ	Cartesian coordinates