Word Sequential Using Deep LSTM and Matrix Factorization to Handle Rating Sparse Data for E-Commerce Recommender System

Table 2

The improvement of latent factors using contextual insight.

Ref.	Method	Latent factor	Rating	Item side document	Bag of words	Deep learning category
						AE	CNN	LSTM
[15]	PMF	√	√	—	—	—	—	—
[16]	LDA	√	√	√	√	—	—	—
[17]	CTR	√	√	√	√	—	—	—
[18]	CDL	√	√	√	—	√	—	—
[26]	SVD + AE	√	√	√	—	√	—	—
[20]	CNN + PMF	√	√	√	—	—	√	—
	(LSTM + PMF)	√	√	√	—	—	—	√