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Table 2 Statistics of the studied datasets

From: An efficient annealing-assisted differential evolution for multi-parameter adaptive latent factor analysis

No. Name #User #Item #Interaction Density*
D1 Douban 129,490 58,541 16,830,839 0.22%
D2 MovieLens 20 M 138,493 26,744 20,000,263 0.54%
D3 Flixter 147,612 48,794 8,196,077 0.11%
D4 Yahoo-R2 200,000 136,736 76,344,627 0.076%
D5 Epinion 120,492 775,760 13,668,320 0.015%
  1. * Density denotes the percentage of observed entries in the dataset