Ranking Across Different Content Types: The Robust Beauty of Multinomial Blending

• URL: http://arxiv.org/abs/2408.09168v1
• Date: Sat, 17 Aug 2024 11:11:31 GMT
• Title: Ranking Across Different Content Types: The Robust Beauty of Multinomial Blending
• Authors: Jan Malte Lichtenberg, Giuseppe Di Benedetto, Matteo Ruffini,
• Abstract summary: Cross-content-type ranking poses a significant challenge for traditional learning-to-rank algorithms. We explore a simple method for cross-content-type ranking, called multinomial blending (MB) We report the results of an A/B test from an Amazon Music ranking use-case.
• Score: 1.0650780147044159
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: An increasing number of media streaming services have expanded their offerings to include entities of multiple content types. For instance, audio streaming services that started by offering music only, now also offer podcasts, merchandise items, and videos. Ranking items across different content types into a single slate poses a significant challenge for traditional learning-to-rank (LTR) algorithms due to differing user engagement patterns for different content types. We explore a simple method for cross-content-type ranking, called multinomial blending (MB), which can be used in conjunction with most existing LTR algorithms. We compare MB to existing baselines not only in terms of ranking quality but also from other industry-relevant perspectives such as interpretability, ease-of-use, and stability in dynamic environments with changing user behavior and ranking model retraining. Finally, we report the results of an A/B test from an Amazon Music ranking use-case.

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