Table 1.

ML algorithm input feature options.

Algorithm Input Options
No.	Feature Set Input Options	No.	Single Feature Input (1 Input)
1.	Conventional features (9 inputs): Fixation count, Fixation total duration, Fixation frequency, Fixation average duration, Saccade count, Saccade total duration, Saccade frequency, Saccade average duration, Total reading time	4.	Active reading time
		5.	Fixation intersection coefficient
		6.	Saccade variability
		7.	Fixation intersection variability
2.	Proposed features (5 inputs): Active reading time, Fixation intersection coefficient, Saccade variability, Fixation intersection variability, Fixation fractal dimension	8.	Fixation fractal dimension
		9.	Fixation count
		10.	Fixation total duration
		11.	Fixation frequency
		12.	Fixation average duration
		13.	Saccade count
		14.	Saccade total duration
		15.	Saccade frequency
3.	Conventional and Proposed features (14 inputs)	16.	Saccade average duration
		17.	Total reading time