Table 3.

Accuracy and predictability of the AoI features considering different fixation times for comparison with the fixation times of 1.5 s used by Shafti et al. (2019) and of 2 s used by Wang et al. (2018).

Configuration (fixation time)	Lined-up (Δt = 0.5)	Triangle (Δt = 0.5)	Lined-up (Δt = 1.5)	Triangle (Δt = 1.5)	Lined-up (Δt = 2.0)	Triangle (Δt = 2.0)	Lined-up (Δt = 0.9)	Triangle (Δt = 1.3)
Accuracy	66.0%	62.4%	52.1%	54.3%	42.6%	48.8%	61.0%	56.3%
Predictability	47.0%	53.8%	24.1%	35.0%	16.1%	28.4%	37.0%	37.9%

Since in general shorter fixation times occurred in the trials, also a shorter 0.5 s interval was tested. A further comparison is done using a fixation time equal to the window times used in our model (Δt = {0.9, 1.3s}).