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Table 2 Confusion matrices of participants 5 and 6 using KNN

From: Four-class emotion classification in virtual reality using pupillometry

Class 1 2 3 4
1 1161 (44.63%) 247 292 290
2 485 1081 (56.98%) 292 129
3 309 343 754 (43.25%) 264
4 646 226 405 646 (48.60%)
Class 1 2 3 4
1 1283 (42.17%) 208 185 301
2 693 452 (31.71%) 639 161
3 195 565 2863 (70.83%) 123
4 871 200 355 520 (47.05%)