Self-Learning Facial Emotional Feature Selection Based on Rough Set Theory

Table 4

The common features in the three datasets.

Database	SARA	CEBARKNC	MIBARK	GA
CKACFE	𝑥13,𝑥14,𝑥15	𝑥1,𝑥8,𝑥13,𝑥16,𝑥21	𝑥1,𝑥8,𝑥16,𝑥17,𝑥22,	𝑥14,𝑥25
			𝑥28,𝑥30,𝑥31,𝑥32
JAFFE	𝑥5,𝑥13,𝑥14,𝑥15,𝑥26	𝑥0,𝑥8,𝑥13	𝑥1,𝑥15,𝑥24,𝑥26,𝑥32	𝑥7,𝑥25,𝑥32
CQUPTE	𝑥7,𝑥13,𝑥14,𝑥15,𝑥24,	𝑥0,𝑥1,𝑥4,𝑥8,𝑥13,	𝑥0,𝑥1,𝑥4,𝑥8,𝑥13,	𝑥11,𝑥14,𝑥22,𝑥23,𝑥24,𝑥32
	𝑥30,𝑥31	𝑥26,𝑥27,𝑥32	𝑥23,𝑥24,𝑥32
Common features	𝑥13,𝑥14,𝑥15	𝑥8,𝑥13	𝑥1,𝑥32	—