A Multichannel fNIRS System for Prefrontal Mental Task Classification with Dual-level Excitation and Deep Forest Algorithm

Table 1

Parameters of the deep forest algorithm in this work.

Symbol	Value	Remark
W1	36	Size of the first scanning window
W2	90	Size of the second scanning window
W3	126	Size of the third scanning window
S	36	Size of the scanning step
N_cls	4	Number of fNIRS data classes
N_mf	30	Number of trees in multigrained scanning forests
N_cf	101	Number of trees in cascade forests
F	0.2	Split fraction for cascade training set splitting