Combining Review Text Content and Reviewer-Item Rating Matrix to Predict Review Rating

Table 4

Douban movie reviews datasets.

Datasets	Metrics	MBKNN	MBLR	MBMF	MBLR + MBKNN	MBLR + MBMF	MBLR + MBKNN + MBMF
Dataset 1	MAE	1.065911	0.847674	0.834128	0.831585	0.802522	0.789961
Dataset 1	RMSE	1.454650	1.100798	1.065305	1.049105	1.004237	0.995946
Dataset 1	Complexity
Dataset 2	MAE	1.062634	0.827660	0.805563	0.808076	0.747034	0.740456
Dataset 2	RMSE	1.427109	1.074086	1.038729	1.028210	0.971285	0.969373
Dataset 2	Complexity

: dimension of VSM; : number of reviewer’s nearest neighbor; : number of latent factor in ratings matrix.