Open Source Vizier: Distributed Infrastructure and API for Reliable and Flexible Blackbox Optimization
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Abstract (arXiv)
Vizier is the de-facto blackbox and hyperparameter optimization service across Google, having optimized some of Google's largest products and research efforts. To operate at the scale of tuning thousands of users' critical systems, Google Vizier solved key design challenges in providing multiple different features, while remaining fully fault-tolerant. In this paper, we introduce Open Source (OSS) Vizier, a standalone Python-based interface for blackbox optimization and research, based on the Google-internal Vizier infrastructure and framework. OSS Vizier provides an API capable of defining and solving a wide variety of optimization problems, including multi-metric, early stopping, transfer learning, and conditional search. Furthermore, it is designed to be a distributed system that assures reliability, and allows multiple parallel evaluations of the user's objective function. The flexible RPC-based infrastructure allows users to access OSS Vizier from binaries written in any language. OSS Vizier also provides a back-end ("Pythia") API that gives algorithm authors a way to interface new algorithms with the core OSS Vizier system. OSS Vizier is available at https://github.com/google/vizier.
Key facts. Cited by 17 papers in the map (data through 7 Oct 2026). Builds on 35 of its 82 references that are in the map. First posted on arXiv 27 Jul 2022.
Builds on
35 of 82 references.
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Citing papers per year: 2022: 2; 2023: 7; 2024: 5; 2025: 1; 2026: 2.
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- 2022Task Selection for AutoML System Evaluation26 Aug 2022
- 2026Backdoor Mitigation in Decentralized LLM Fine-Tuningcited by 0
- 2026Backdoor Mitigation in Decentralized LLM Fine-Tuning29 Sep 2026
- 2023AutoML in the Age of Large Language Models: Current Challenges, Future Opportunities and Riskscited by 34
- 2024OmniPred: Language Models as Universal Regressorscited by 34
- 2024Reinforced In-Context Black-Box Optimizationcited by 14
- 2024Position: A Call to Action for a Human-Centered AutoML Paradigmcited by 14
- 2024The Vizier Gaussian Process Bandit Algorithmcited by 14
- 2025OptunaHub: A Platform for Black-Box Optimizationcited by 14
- 2023Massively Scaling Heteroscedastic Classifierscited by 11
- 2023OpenBox: A Python Toolkit for Generalized Black-box Optimizationcited by 9
- 2022Differentially Private Image Classification from Featurescited by 7
- 2023Learning from Label Proportions: Bootstrapping Supervised Learners via Belief Propagationcited by 7
- 2022Task Selection for AutoML System Evaluationcited by 6
- 2023Scalable End-to-End ML Platforms: from AutoML to Self-servecited by 2
12 most cited of 15 All 15 (JSON)
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- 2024AgentForge: A Flexible Low-Code Platform for Reinforcement Learning Agent Design25 Oct 2024
- 2024The Vizier Gaussian Process Bandit Algorithm21 Aug 2024
- 2024Position: A Call to Action for a Human-Centered AutoML Paradigm5 Jun 2024
- 2024Reinforced In-Context Black-Box Optimization27 Feb 2024
- 2024OmniPred: Language Models as Universal Regressors22 Feb 2024
- 2023Learning from Label Proportions: Bootstrapping Supervised Learners via Belief Propagation12 Oct 2023
- 2023Pareto optimal proxy metrics3 Jul 2023
- 2023AutoML in the Age of Large Language Models: Current Challenges, Future Opportunities and Risks13 Jun 2023
- 2023OpenBox: A Python Toolkit for Generalized Black-box Optimization26 Apr 2023
- 2023Scalable End-to-End ML Platforms: from AutoML to Self-serve27 Feb 2023
- 2023Massively Scaling Heteroscedastic Classifiers30 Jan 2023
12 newest of 15 All 15 (JSON)