Sruthi Gorantla

Optimizing Group-Fair Plackett-Luce Ranking Models for Relevance and Ex-Post Fairness

2023 · arXiv (Cornell University)

In learning-to-rank (LTR), optimizing only the relevance (or the expected ranking utility) can cause representational harm to certain categories of items. Moreover, if there is implicit bias in the relevance scores, LTR models may fail …