Table 5.

Initial values of parameters.

Model	Parameters
JST	Max_iteration:5000; |Z| = 5,10,15,20; α=0.1; γ=0.016 × (average document length); β=0.01;
RJST	Max_iteration:5000; |Z| = 5,10,15,20; α=0.1; γ=0.016 × (average document length); β=0.01;
TJST	Max_iteration:5000; |Z| = 5,10,15,20; α=0.1; γ=0.016 × (average document length); β=0.01;
TS	Max_iteration:5000; |Z| = 5,10,15,20; α=0.1; γ=0.016 × (average document length); β=0.01;
WJST	Max_iteration:5000; |Z| = 5,10,15,20; α=0.3; γ=0.016 × (average document length); β=0.01; μ=3; δ=9; E = [−5, +5]; Q = {1,2,3,4,5,6};
WJST1	Max_iteration:5000; |Z| = 5,10,15,20; α=0.3; γ=0.016 × (average document length); β=0.01; μ=3; δ=9; E = [−5, +5]; Q = {1,2,3,4,5,6};