Research Article
[Retracted] Using the Mathematical Model on Precision Marketing with Online Transaction Data Computing
Table 2
Comparison of performance results for the top 20% users.
| | Top 20% users | SVD++ | User KNN | Item KNN |
| | Proportion of recommendations coinciding with past purchase records | 30% | 20% | 10% | | Maximum recommendation index | 38.60 | 17.40 | 3.43 | | Average recommendation index | 14.79 | 10.98 | 2.38 |
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