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EvaluationVery Hard· Dwell Time· Regression· Learning to Rank
A colleague points out that your new labels are dwell t...
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See plansSwitching to regression does not solve the loss-metric mismatch, as dwell time still reaches the metric through argsort. Furthermore, dwell time is not comparable across queries—30 seconds on a recipe is different from 30 seconds on a troubleshooting page—and it is heavily biased by the current ranker’s exposure policy. It is better used as a feature or for pairwise preference learning.