[Retracted] Combining Latent Factor Model for Dynamic Recommendations in Community Question Answering Forums

Algorithm 1

Latent Dirichlet Allocation.

	Input: A document vector w in a corpus D
	Output: A probabilistic topic vector t for document
	Procedure of LDA:
(1)	Choose N ∼ Poisson (€)
(2)	Choose θ ∼ Dir (α)
(3)	For each word wi in wn:
(a)	Choose topic zn ∼ Multinomial (θ)
(b)	Choose a word wn from p(wn|zn, β) that is multinomial probability conditioned on the topic zn
(c)	ti <- zn
(4)	Return t