Research Article
Dealing with Pure New User Cold-Start Problem in Recommendation System Based on Linked Open Data and Social Network Features
Table 10
F1 measures and the precision values of feature performance.
| Top N | Precision | F1 metric | Precision | F1 metric | Precision | F1 metric | Precision | F1 metric | LOD | LOD | LOD + D | LOD + D | LOD + SN + D | LOD + SN + D | SN | SN |
| Top-5 | 0.68 | 0.76 | 0.4 | 0.571 | 0.4 | 0.4 | 0.4 | 0.4 | Top-10 | 0.68 | 0.8 | 0.5 | 0.5 | 0.4 | 0.16 | 0.4 | 0.45 | Top-15 | 0.77 | 0.82 | 0.33 | 0.47 | 0.6 | 0.48 | 0.47 | 0.47 | Top-20 | 0.73 | 0.84 | 0.4 | 0.56 | 0.55 | 0.43 | 0.6 | 0.6 | Top-25 | 0.85 | 0.86 | 0.32 | 0.6 | 0.48 | 0.48 | 0.6 | 0.6 | Top-30 | 0.8 | 0.88 | 0.67 | 0.76 | 0.57 | 0.33 | 0.66 | 0.66 | Top-35 | 0.97 | 0.97 | 0.56 | 0.7 | 0.63 | 0.58 | 0.6 | 0.75 |
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