HISTORY.rst

Release Notes

4.4.0 (2024-12-13)

• Compatible with numpy version 2 and above. Any remaining errors like "ValueError: numpy.dtype size changed, may indicate binary incompatibility. Expected 96 from C header, got 88 from PyObject" are due to ultranest and numpy being installed with different versions. Reinstall numpy and ultranest in that case.

4.3.0 (2024-04-12)

• added :py:class:`ultranest.popstepsampler.PopulationSimpleSliceSampler`: Vectorized, fixed-batch size slice sampler. (PR by Benjamin Beauchesne)
• validation of passed parameter names (PR by svaverbe)
• documentation improvements, including documenting results dictionary (PR by Jacopo Tissino)
• make scipy actually optional (PR by Matthew Kirk)
• linting

4.2.0 (2024-02-15)

• new :py:class:`ultranest.mlfriends.LocalAffineLayer` for metric learning, set as default (see issue 124)
• add Highest Density Interval function (ultranest.plot.highest_density_interval_from_samples)
• corner plot style with higher signal-to-ink ratio.
• bug fixes in popstepsampler

4.1.0 (2024-02-15)

• add number of steps calibrator :py:class:`ultranest.calibrator.ReactiveNestedCalibrator`
• add relative jump distance diagnostic for step samplers
• make population step samplers more consistent with other step samplers

4.0.0 (2024-02-15)

• new :py:class:`ultranest.mlfriends.MaxPrincipleGapAffineLayer` for metric learning, set as default

3.6.5 (2023-07-18)

• documentation improvements
• logging with MPI fixes by adipol-ph and by gregorydavidmartinez
• more flexible plotting by facero

3.6.0 (2023-06-22)

• add PopulationRandomWalkSampler: vectorized Gaussian random walks for GPU/JAX-powered likelihoods
• limit initial widening to escape plateau (issue #81)

3.5.0 (2022-09-05)

• add hot-resume: resume from a similar fit (with different data)
• fix post_summary.csv column order
• fix build handling for non-pip systems (pyproject.toml)
• more efficient handling of categorical variables

3.4.0 (2022-04-05)

• add differential evolution proposal for slice sampling, recommend it
• fix revert of step sampler when run out of constraint, in MPI
• add SimpleRegion: axis-aligned ellipsoidal for very high-d.

3.3.3 (2021-09-17)

• pretty marginal posterior plot to stdout
• avoid non-terminations when logzerr cannot be reached
• add RobustEllipsoidRegion: ellipsoidal without MLFriends for high-d.
• add WrappingEllipsoid: for additional rejection.
• bug fixes on rank order test
• add resume-similar
• modular step samplers

3.0.0 (2020-10-03)

• Accelerated Hit-and-Run Sampler added
• Support for other languages (C, C++, Julia, Fortran) added
• Insertion order test added
• Warm-start added
• Rejection sampling with transformed ellipsoid added

2.2.0 (2020-02-07)

• allow reading UltraNest outputs without ReactiveNestedSampler instance

2.1.0 (2020-02-07)

• adaptive number of steps for slice and hit-and-run samplers.

2.0.0 (2019-10-03)

• First release.

1.0.0 (2014)

• A simpler version referenced in Buchner et al. (2014), combining RadFriends with an optional Metropolis-Hastings proposal.