EEG-Based Automatic Sleep Staging Using Ontology and Weighting Feature Analysis

Table 8

Standard deviation and weight coefficient of different features (female).

Feature	Prel (Cz, δ)	Com (Cz)	Act (Cz)	Prel (Cz, saw)	Prel (Oz, δ)	Act (Oz)	Mob (Oz)	Skew (Oz)
Standard deviation	0.373142	0.198726	0.265727	0.305066	0.171219	0.352091	0.252303	0.144717
Weight coefficient	0.180874	0.096328	0.128807	0.147876	0.082996	0.170670	0.122300	0.070149

Note: P_rel (Cz, δ): the relative spectral power of delta on Fpz-Cz electrode; Com (C_z): complexity on Fpz-Cz electrode; Act (C_z): activity on Fpz-C_z electrode; P_rel (C_z, saw): the relative spectral power of sawtooth on Fpz-Cz electrode; P_rel (O_z, δ): the relative spectral power of delta on Pz-Oz electrode; Act (O_z): activity on Pz-Oz electrode; Mob (O_z): mobility on Pz-Oz electrode; Skew (O_z): skewness on Pz-Oz electrode.