Algorithm 3 Computation of wandering style
	Data: User’s trajectory data (pos = (x, y), array)
	Results: Wandering style (ws) feature
1	cells ← unique((round (pos(x)), round(pos(y))))
2	i = 1, trajectory_length = 0
3	while i < length(pos) do
4		distance ← √(posi x) − posi−1(x))2 + (posi(y) − posi−1(y))2
5		trajectory_length ← trajectory_length + distance
6	end
7	if trajectory_length > 0 then
8		ws ← length (cells)/trajectory_length
9	else
10		ws ← 0
11	end
12	end