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. 2020 Jun 23;9(6):1964. doi: 10.3390/jcm9061964

Figure 5.

Figure 5

Comparison of the performance of surgical skill prediction models and parts of items in Object Structured Assessment of Technical Skills (OSATS) and Global Evaluative Assessment of Robotic Surgery (GEARS) with a confusion matrix. The test dataset consisted of four novice, four skilled, and four expert surgeons. (a–c) Confusion matrix results of models using the OSATS. (a) Linear classifier; (b) support vector machine; and (c) random forest. (d–f) Confusion matrix results of models using the GEARS. (d) Linear classifier; (e) support vector machine; and (f) random forest.