Cold-Starting Podcast Ads and Promotions with Multi-Task Learning on Spotify

Fuente: arXiv
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Autori principali: Verma, Shivam, Karlbom, Hannes, Zhao, Yu, Topping, Nick, Chen, Vivian, Stanley, Kieran, Rengarajan, Bharath
Natura: Preprint
Pubblicazione: 2026
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author Verma, Shivam
Karlbom, Hannes
Zhao, Yu
Topping, Nick
Chen, Vivian
Stanley, Kieran
Rengarajan, Bharath
author_facet Verma, Shivam
Karlbom, Hannes
Zhao, Yu
Topping, Nick
Chen, Vivian
Stanley, Kieran
Rengarajan, Bharath
contents We present a unified multi-objective model for targeting both advertisements and promotions within the Spotify podcast ecosystem. Our approach addresses key challenges in personalization and cold-start initialization, particularly for new advertising objectives. By leveraging transfer learning from large-scale ad and content interactions within a multi-task learning (MTL) framework, a single joint model can be fine-tuned or directly applied to new or low-data targeting tasks, including in-app promotions. This multi-objective design jointly optimizes podcast outcomes such as streams, clicks, and follows for both ads and promotions using a shared representation over user, content, context, and creative features, effectively supporting diverse business goals while improving user experience. Online A/B tests show up to a 22% reduction in effective Cost-Per-Stream (eCPS), particularly for less-streamed podcasts, and an 18-24% increase in podcast stream rates. Offline experiments and ablations highlight the contribution of ancillary objectives and feature groups to cold-start performance. Our experience shows that a unified modeling strategy improves maintainability, cold-start performance, and coverage, while breaking down historically siloed targeting pipelines. We discuss practical trade-offs of such joint models in a real-world advertising system.
format Preprint
id arxiv_https___arxiv_org_abs_2601_02306
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle Cold-Starting Podcast Ads and Promotions with Multi-Task Learning on Spotify
Verma, Shivam
Karlbom, Hannes
Zhao, Yu
Topping, Nick
Chen, Vivian
Stanley, Kieran
Rengarajan, Bharath
Information Retrieval
We present a unified multi-objective model for targeting both advertisements and promotions within the Spotify podcast ecosystem. Our approach addresses key challenges in personalization and cold-start initialization, particularly for new advertising objectives. By leveraging transfer learning from large-scale ad and content interactions within a multi-task learning (MTL) framework, a single joint model can be fine-tuned or directly applied to new or low-data targeting tasks, including in-app promotions. This multi-objective design jointly optimizes podcast outcomes such as streams, clicks, and follows for both ads and promotions using a shared representation over user, content, context, and creative features, effectively supporting diverse business goals while improving user experience. Online A/B tests show up to a 22% reduction in effective Cost-Per-Stream (eCPS), particularly for less-streamed podcasts, and an 18-24% increase in podcast stream rates. Offline experiments and ablations highlight the contribution of ancillary objectives and feature groups to cold-start performance. Our experience shows that a unified modeling strategy improves maintainability, cold-start performance, and coverage, while breaking down historically siloed targeting pipelines. We discuss practical trade-offs of such joint models in a real-world advertising system.
title Cold-Starting Podcast Ads and Promotions with Multi-Task Learning on Spotify
topic Information Retrieval
url https://arxiv.org/abs/2601.02306