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CHANGELOG.md

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Changelog

The release log for Ax.

[1.1.2] -- Sept 9, 2025

Bug fixes

  • Fixed rendering issue in ArmEffectsPlot when the number of arms displayed is greater than 20 (#4273)

Other changes

  • Enabled Winsorization transform by default, improving surrogate performance in the presence of outliers (#4277)

[1.1.1] -- Sept 4, 2025

Bug fixes

  • Correctly filter out observations from Abandoned trials/arms during candidate generation (#4155)
  • Handle scalarized objectives in ResultsAnalysis (#4193)
  • Fix bug in polytope sampler when generating more than one candidate in a batch (#4244)

Other changes

  • Transition from setup.py to pyproject.toml for builds, modernizing Ax's build configuration and bringing it in compliance with PEP 518 and PEP 621 (#4100)
  • Add py.typed file, which allows typecheckers like Pyre, mypy, etc. to see Ax's types and avoid a TypeStub error when importing Ax (#4139)
  • Improve legibility of ArmEffectPlot by modifying legend and x-axis labels (#4220, #4243)
  • Address logspew in OneHotEncoder transform (#4232)

[1.1.0] -- Aug 11, 2025

New Features

  • New option for the method parameter in client.configure_generation_strategy: quality -- allows uers to indicate they would like Ax to generate the highest quality candidates it is able to at the expense of slower runtime (#4042)
  • New logic for deciding which analyses to produce by default in client.compute_analyses (#4013)
  • New parameters in client.summarize allow users to filter their summary by trial index and/or trial status (#4012, #4118)

Bug Fixes

  • Allow client.summarize to be called without a GenerationStrategy being set (i.e. before client.configure_generation_strategy or client.get_next_trails has been called.) (#3801)
  • Fixed incorrect grouping in TopSurfacesAnalysis (#4095)
  • Fixed ContourPlot failing to compute in certain search spaces with parameter constraints (#4124)
  • Misc. plotting fixes and improvements

Other changes

  • Bumped pinned botorch version to 0.15.1
  • Performance improvements in SensitivityAnalysis (#3891)
  • Improved optimization performance in constrained optimization settings (#3585)
  • Augmented logging in Client, early stopping module (#4044, #4108)