Algorithm 1. The filter-out the user’s short-time topic.

Enter: $A_{u_i}$, $w_{j,t}^{u_i}$

Output: $A_{u_i}^{\prime }$

a) St(j)← $S{t}_{topi{c}_j}^{u_i}$,topic[]← $A_{u_i}$

b) For topic[j] in topic[] do

c) For t in T do

d) St(j)←St(j)+()// Calculate jitter $w_{j,t}^{u_t}-avg(w_{j,t}^{u_t})$

e) St(j)←St(j)/T

f) Order by St asc

g) For j in (kt,k] do

h) Then for q in [0, kt] do

i) $w_q$ ←*(1+) // Assign cut edge weight $w_q{w}_q\ast w_j$

j) Update $w_{q^{\mathrm{\prime }}}$ ← $w_q$

k) Return $A_{u_i}^{\prime }$