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# FAQ | ||
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## Is `ranx` suited for evaluating classification tasks? | ||
No, it's not. `ranx` is meant for ranking tasks. Although some metrics are commonly used for evaluation of both tasks (e.g., `precision` and `recall`) the relevance scores stored in `runs` should not be confused with the predicted class labels of a classification task. Relevance scores are used by `ranx` to sort results before computing the metrics, regardless of their actual values. | ||
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## Are zero and negative scored results filtered out by `ranx`? | ||
Zero and negative scored results are NOT filtered out by `ranx`. | ||
Relevance scores are used only for sorting and there is no constraint on the values produce by a ranking models, although some of them only outputs positive values. | ||
Therefore, if you think that zero and negative scored results should be filtered out, you should do it before passing the `runs` to `ranx`. |
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