ModifiedDistributions.jl

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Release notes ​

ModifiedDistributions.jl follows a hybrid changelog approach:

  • GitHub Releases: All releases (automatically generated by TagBot)

  • NEWS.md: Major releases requiring detailed context (shown below)

See GitHub Releases for minor/patch release information.

Unreleased ​

This file tracks notes for major releases and significant milestones; GitHub Releases (auto-generated from merged PRs) cover every release in between.

v0.1.0 - Initial release ​

Built on the EpiAwarePackageTools scaffold: managed CI, DocumenterVitepress docs, Aqua/ExplicitImports/JET quality gates, the six-backend AD gradient harness, and the evaluation + AD benchmark suite (#9, #25).

Features ​

  • Ported the Affine modifier from CensoredDistributions.jl: affine(dist; scale, shift) gives the exact change-of-variables distribution of scale * X + shift, including direct ccdf/logccdf (precise in the upper tail), summary statistics, and discrete-support handling (#10, #13).

  • Ported the Weighted modifier: weight(dist, w) scales logpdf by a weight for aggregated or count observations, with observation-time weights, vectorised Product forms, and delegated summary statistics (#10, #13).

  • Ported the Transformed forward-series modifier with series_transform/thin/cumulative, transparent to every distribution method; the generic verb is named series_transform so it cannot clash with DataFrames.transform (#10, #35).

  • Added the generic get_dist/get_dist_recursive unwrap protocol, extendable by downstream wrapper packages (#10).

  • Added the modify hazard-modification verb: Modified transforms a continuous distribution's hazard through a link, with closed-form proportional-hazards (log, default) and additive-hazards (identity, non-negative effects, hazard accrued from the support minimum) paths. General links, negative additive effects, and the discrete path stay upstream in CensoredDistributions.jl (#12, #17).

  • Added a ComposedDistributions.jl package extension letting the modifier verbs apply across a composed Sequential chain by modifying its observed scalar (#14).

  • Reinstated the AbstractModifiedDistribution supertype and interface contract shared with the CensoredDistributions hierarchy (#27).

Documentation ​

  • Getting-started overview touring every modifier, tutorials (weighted likelihoods, the modifier pipeline, composed chains), an FAQ, developer guides, an extended README, and a package logo (#19, #20, #23).