facebook/Ax

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Adaptive Experimentation Platform

Stars: 2.8k
Forks: 381
Open beginner issues: 0
Indexed issues: 37

Dominant language: Python
License: MIT
Last GitHub push: Sep 18, 2026
Latest indexed: Sep 15, 2026
Contributing guide: Contributing guide
Code of conduct: Code of conduct
Beginner labels: No beginner labels indexed
PR merge metrics: No merged PRs in 30d

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36 open issues indexed

[Bug]: Sparsity threshold increase doesn't change solution sparsity Open

question

Difficulty 4/5 3-5 days Newbie friendliness 38/100

facebook/Ax#5288 · Opened Sep 11, 2026
[GENERAL SUPPORT]: performance impact of `max_trials` in `get_next_trials` Open

question

Difficulty 3/5 1-2 days Newbie friendliness 35/100

facebook/Ax#5268 · 1 comment · Opened Aug 6, 2026
[Bug]: Parameter constraints not working for ChoiceParameters Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 64/100

facebook/Ax#5256 · 1 comment · 1 reaction · Opened Jul 24, 2026
[GENERAL SUPPORT]: ax.dev community discord Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

facebook/Ax#5240 · Opened Jun 28, 2026
[GENERAL SUPPORT]: Open

question

Difficulty 5/5 Over a week Newbie friendliness 20/100

facebook/Ax#5237 · 1 comment · Opened Jun 24, 2026
[GENERAL SUPPORT]: Tutorial on Transfer Learning Open

question

Difficulty 3/5 1-2 days Newbie friendliness 38/100

facebook/Ax#5227 · 2 comments · Opened Jun 9, 2026
[FEATURE REQUEST]: Expand model space for unordered ChoiceParameters Open

enhancement

Difficulty 4/5 3-5 days Newbie friendliness 45/100

facebook/Ax#5215 · Opened Jun 3, 2026
An update on Ax & BoTorch maintenance Open

Difficulty 5/5 Over a week Newbie friendliness 10/100

facebook/Ax#5204 · 1 comment · 3 reactions · Opened May 21, 2026
Help modernizing Hydra's Ax Sweeper plugin Open

Difficulty 4/5 3-5 days Newbie friendliness 25/100

facebook/Ax#5202 · Opened May 15, 2026
[Bug]: artifacts displaying on Generation Strategy Graph of `compute_analyses` Open

bug

Difficulty 3/5 1-2 days Newbie friendliness 48/100

facebook/Ax#5198 · 1 comment · Opened May 1, 2026
[GENERAL SUPPORT]: Expose Acquisition Function and Kernel Hyper parameter Open

question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

facebook/Ax#5099 · 1 comment · Opened Mar 25, 2026
[GENERAL SUPPORT]: SAASBO with qNEHVI on 10 objectives MOO Open

question

facebook/Ax#5034 · 7 comments · 1 assignee · Opened Mar 16, 2026
[FEATURE REQUEST]: Create `ax_community` cf `botorch_community` Open

enhancement

facebook/Ax#5030 · 4 comments · 2 reactions · 1 assignee · Opened Mar 14, 2026
[GENERAL SUPPORT]: RangeParameter transformed as a ChoiceParameter so no slice plot Open

question

facebook/Ax#4967 · 1 comment · 1 assignee · Opened Mar 4, 2026
[Bug]: parameter_constraints does not support RangeParameterConfig Open

bug

facebook/Ax#4905 · 1 assignee · Opened Feb 12, 2026
[Bug]: CrossValidation is broken, fails with ValueError Open

bug

facebook/Ax#4879 · 1 assignee · Opened Feb 10, 2026
[Bug]: Inconsistent behaviour between client.get_hypervolume and client.get_pareto_optimal_parameters for ExternalGenerationNode Open

bug

facebook/Ax#4831 · 1 assignee · Opened Jan 27, 2026
[Bug]: RangeParameterConfig error when using some float stepsize Open

bug

facebook/Ax#4781 · 8 comments · 1 assignee · Opened Jan 20, 2026
[Bug]: Missing MultiTask API in the latest version and documentation Open

bug

facebook/Ax#4702 · 2 comments · 1 assignee · Opened Dec 25, 2025
[GENERAL SUPPORT]: dependent_parameters and DerivedParameterConfig are not documented Open

question

facebook/Ax#4694 · 1 assignee · Opened Dec 23, 2025
[GENERAL SUPPORT]: Reusing/importing trials. Open

question

facebook/Ax#4672 · 3 comments · 1 assignee · Opened Dec 17, 2025
[Bug]: cannot save client when metrics are tracked Open

bug

facebook/Ax#4671 · 3 comments · 1 assignee · Opened Dec 17, 2025
[FEATURE REQUEST]: Query Max Expected Improvment Directrly from Ax Client Open

enhancement wishlist

Difficulty 5/5 Over a week Newbie friendliness 25/100

facebook/Ax#4385 · 3 comments · Opened Oct 3, 2025
[GENERAL SUPPORT]: Recommendations for "in-situ" changes to optimization configurations in closed-loop environments Open

question

Difficulty 5/5 Over a week Newbie friendliness 25/100

facebook/Ax#4295 · 5 comments · Opened Sep 15, 2025
[FEATURE REQUEST]: function to save ax client to json object Open

enhancement requires repro or more info

facebook/Ax#4143 · 3 comments · 1 assignee · Opened Aug 14, 2025
[FEATURE REQUEST]: Provide a minimal working example for client.predict() Open

enhancement

facebook/Ax#4094 · 1 comment · 1 reaction · 1 assignee · Opened Aug 3, 2025
[GENERAL SUPPORT]: Slow MultiObjective Small Space Parallel Get Trials Open

question

facebook/Ax#4043 · 12 comments · 1 reaction · 1 assignee · Opened Jul 16, 2025
[GENERAL SUPPORT]: BilogY requires observations - error when running BoToch model with client.run_trials() Open

bug question

Difficulty 4/5 3-5 days Newbie friendliness 35/100

facebook/Ax#3947 · 2 comments · Opened Jun 20, 2025
[Bug]: Issue when saving to MySQL Open

bug

Difficulty 4/5 3-5 days Newbie friendliness 35/100

facebook/Ax#3942 · 4 comments · Opened Jun 17, 2025
[GENERAL SUPPORT]: slow compared to other bayes opt package Open

question

Difficulty 5/5 Over a week Newbie friendliness 15/100

facebook/Ax#3932 · 2 comments · Opened Jun 16, 2025
[FEATURE REQUEST]: Create a "best-practice" method for optimizing mixture weights, including optimizing over a simplex search space Open

enhancement

Difficulty 5/5 Over a week Newbie friendliness 35/100

facebook/Ax#3867 · 15 comments · Opened Jun 4, 2025
[GENERAL SUPPORT]: MOO with "default settings" performs poorly after upgrading from 0.5.0 to 1.0.0 Open

question

facebook/Ax#3821 · 12 comments · 2 reactions · 1 assignee · Opened May 27, 2025
[FEATURE REQUEST]: Pool-based learning within Ax (i.e. allow Ax to sample from a pre-selected finite set of feasible arms only) Open

enhancement

facebook/Ax#3671 · 11 comments · 1 assignee · Opened Apr 21, 2025
[Bug]: `relativize_data` does not take into account sem set to None at experiment definition. Open

bug

facebook/Ax#3484 · 4 comments · 1 assignee · Opened Mar 10, 2025
BUG: MBM sums up MOO outputs when given a single objective acquisition function Open

in progress

facebook/Ax#2519 · 3 comments · 2 reactions · 1 assignee · Opened Jun 13, 2024
Wishlist: Tracking Issue Open

wishlist

facebook/Ax#566 · 8 comments · 1 reaction · 1 assignee · Opened Apr 23, 2021

facebook/Ax

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