Algorithm 2. The generation of topic features.

Input: $V_{ua}$ (User $u_a\left(1\le a\le N\right)\in c^{jh}$)

Output: $V_{c^{jh}}$

a) Initialize V = [ $V_{c^{jh}}$] matrix, V(0)

b) Calculate S = [ $S_{ab}^{\beta }$] matrix, S(0) with $V_{ua}$

c) k-step: calculate the vectors CTopic(k)=[] with S(k) by Formula (13) // Update the topic point $CTopi{c}_b^{c^{jh}}$

d) Update S(k),S(k+1) by Formula (12) // Update the correlation matrix

e) If $\parallel S(k+1)-s(k)\parallel <\epsilon$

f) Then stop

g) Else return to step c

h) Return $V_{c^{jh}}$