Research Article
Effect of Collaborative Recommender System Parameters: Common Set Cardinality and the Similarity Measure
Table 6
PCP and coverage of the examined RS with different common set sizes.
| | | PCP | Coverage | MAE | | CS1 | CS2 | CS3 | CS4 | CS5 | CS1 | CS2 | CS3 | CS4 | CS5 | CS1 | CS2 | CS3 | CS4 | CS5 |
| CBRS | 10 | 10.15 | 23.22 | 27.83 | 30.18 | 32.09 | 32.05 | 69.62 | 80.08 | 84.95 | 87.99 | 7.02 | 1.66 | 1.09 | 0.9 | 0.62 | 30 | 31.7 | 34.38 | 35.34 | 35.71 | 36.43 | 89.02 | 94.46 | 95.81 | 95.78 | 96.61 | 1.23 | 0.97 | 0.77 | 0.71 | 0.49 | 50 | 35.53 | 36.11 | 36.24 | 36.25 | 36.74 | 96.49 | 97.19 | 97.25 | 96.67 | 97.12 | 1 | 0.93 | 0.75 | 0.7 | 0.48 |
| CVRS | 10 | 6.74 | 20.24 | 27.44 | 30.5 | 31.98 | 22.98 | 60.33 | 78.13 | 85.05 | 87.39 | 9.02 | 2.15 | 1.08 | 0.85 | 0.63 | 30 | 26.02 | 33.92 | 35.23 | 35.59 | 36.05 | 75.77 | 93.52 | 95.77 | 96.19 | 96.46 | 1.84 | 1.05 | 0.74 | 0.68 | 0.52 | 50 | 34.27 | 35.49 | 36.13 | 35.98 | 36.6 | 94.46 | 97.04 | 97.77 | 97.48 | 97.44 | 1.08 | 1 | 0.71 | 0.66 | 0.5 |
| DWRS | 10 | 18 | 26.53 | 29.94 | 31.65 | 32.95 | 51.59 | 74.52 | 82.79 | 86.66 | 88.74 | 3.62 | 1.44 | 0.99 | 0.84 | 0.6 | 30 | 34.2 | 35.45 | 36.23 | 36.09 | 36.54 | 91.71 | 94.41 | 95.49 | 95.79 | 96.34 | 1.12 | 0.95 | 0.76 | 0.69 | 0.5 | 50 | 36.48 | 36.53 | 36.83 | 36.49 | 37.15 | 96.17 | 96.88 | 97.1 | 97.1 | 97.39 | 1.01 | 0.91 | 0.74 | 0.68 | 0.49 |
| MDRS | 10 | 23.08 | 29.22 | 31.46 | 31.78 | 32.95 | 63.93 | 79.67 | 85.41 | 87.43 | 89.16 | 2.41 | 1.3 | 0.95 | 0.83 | 0.6 | 30 | 34.84 | 35.65 | 36.13 | 36.01 | 36.68 | 93.04 | 94.74 | 95.6 | 95.83 | 96.27 | 1.09 | 0.94 | 0.76 | 0.69 | 0.5 | 50 | 36.47 | 36.48 | 36.75 | 36.64 | 37.45 | 96.37 | 96.81 | 97.06 | 97.09 | 97.39 | 1.01 | 0.91 | 0.74 | 0.68 | 0.49 |
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