ACT: Automated Constraint Targeting for Multi-Objective Recommender Systems
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866916931830808576 |
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| author | Chang, Daryl Wu, Yi She, Jennifer Wei, Li Heldt, Lukasz |
| author_facet | Chang, Daryl Wu, Yi She, Jennifer Wei, Li Heldt, Lukasz |
| contents | Recommender systems often must maximize a primary objective while ensuring secondary ones satisfy minimum thresholds, or "guardrails." This is critical for maintaining a consistent user experience and platform ecosystem, but enforcing these guardrails despite orthogonal system changes is challenging and often requires manual hyperparameter tuning. We introduce the Automated Constraint Targeting (ACT) framework, which automatically finds the minimal set of hyperparameter changes needed to satisfy these guardrails. ACT uses an offline pairwise evaluation on unbiased data to find solutions and continuously retrains to adapt to system and user behavior changes. We empirically demonstrate its efficacy and describe its deployment in a large-scale production environment. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_03661 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | ACT: Automated Constraint Targeting for Multi-Objective Recommender Systems Chang, Daryl Wu, Yi She, Jennifer Wei, Li Heldt, Lukasz Information Retrieval Machine Learning Recommender systems often must maximize a primary objective while ensuring secondary ones satisfy minimum thresholds, or "guardrails." This is critical for maintaining a consistent user experience and platform ecosystem, but enforcing these guardrails despite orthogonal system changes is challenging and often requires manual hyperparameter tuning. We introduce the Automated Constraint Targeting (ACT) framework, which automatically finds the minimal set of hyperparameter changes needed to satisfy these guardrails. ACT uses an offline pairwise evaluation on unbiased data to find solutions and continuously retrains to adapt to system and user behavior changes. We empirically demonstrate its efficacy and describe its deployment in a large-scale production environment. |
| title | ACT: Automated Constraint Targeting for Multi-Objective Recommender Systems |
| topic | Information Retrieval Machine Learning |
| url | https://arxiv.org/abs/2509.03661 |