11. The process of claim 10 , further comprising representing the second semantic term by the equation: 
 ∥{right arrow over (θ)} (i) ∥1 for the i th post.
10. The process of claim 9 , further comprising representing the first semantic term by the equation: 
 ∥ D−XΘ∥ F 2 , where F is a number of topics, and where, 
 D={{right arrow over (d)} (1) , . . . ,{right arrow over (d)} (L) }, d is a post and L is a number of posts, Θ is a coefficient matrix given by, 
 Θ={{right arrow over (θ)} (1) . . . {right arrow over (θ)} (L) }, where θ is a topic coefficient, and X is a topic space given by, 
 X={{right arrow over (x)} (1) , . . . , {right arrow over (x)} (T) }, for a topic x and a given topic number T.