FEA: update long-tail metric #869
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guijiql
suggested changes
Jul 9, 2021
recbole/evaluator/metrics.py
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| For further details, please refer to the `paper <https://arxiv.org/pdf/2007.12329.pdf>` | ||
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| .. math:: | ||
| \mathrm {TailPercentage}=\frac{1}{|U|} \sum_{u \in U_} \frac{\sum_{i \in R_{u}} {1| i \in T}}}{|R_{u}|} |
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There seems to be a problem with this formula.
Maybe it should be \mathrm {TailPercentage}=\frac{1}{|U|} \sum_{u \in U} \frac{\sum_{i \in R_{u}} {1| i \in T}} {|R_{u}|}
guijiql
approved these changes
Jul 9, 2021
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