Table 3.

Performance of three-class models in the validation set.

	AUC	ACC	Precision	Recall	F1-score
RM3
metastatic tumor	0.805	0.665	0.645	0.364	0.465
chordoma	0.849	0.665	0.818	0.346	0.486
sarcoma	0.846	0.665	0.657	0.926	0.769
RM4
chondrosarcoma	0.812	0.667	0.682	0.769	0.723
osteosarcoma	0.742	0.667	0.636	0.656	0.646
Ewing’s sarcoma	0.811	0.667	0.684	0.520	0.591
Clinics3
metastatic tumor	0.950	0.824	0.836	0.836	0.836
chordoma	0.915	0.824	0.609	0.538	0.571
sarcoma	0.951	0.824	0.867	0.895	0.881
Clinics4
chondrosarcoma	0.852	0.583	0.743	0.667	0.703
osteosarcoma	0.645	0.583	0.448	0.406	0.426
Ewing’s sarcoma	0.846	0.583	0.531	0.680	0.596
Clinical-RM3
metastatic tumor	0.947	0.841	0.780	0.836	0.807
chordoma	0.923	0.841	0.737	0.538	0.622
sarcoma	0.964	0.841	0.898	0.926	0.912
Clinical-RM4
chondrosarcoma	0.869	0.667	0.756	0.795	0.775
osteosarcoma	0.799	0.667	0.625	0.625	0.625
Ewing’s sarcoma	0.847	0.667	0.565	0.520	0.542

AUC, area under curve; ACC, accuracy.