What’s New

This page highlights recent updates, new features, and improvements to the MissMecha package.

Latest Release: v0.1.2 (2025-07-30)

✨ New Features

  • Added support for custom missing data mechanisms via MissMechaGenerator(mechanism="custom", custom_class=...).

  • Now supports column-wise customization of custom mechanisms through the info dictionary.

  • Improved interface compatibility with fit/transform convention for user-defined classes.

Fixes

  • MNARType1 now adapts to missing_rate by automatically calculating appropriate lower/upper quantiles when parameters are not specified.

    A huge thanks to @mahshidkhatiri for raising [Issue #2](https://github.com/echoid/MissMecha/issues/2) and helping us improve the robustness of MNAR mechanisms!

Documentation

  • A new tutorial page for Custom Mechanisms is now available: Custom Missing Mechanisms.

  • Improved docstring and examples for MissMechaGenerator.

Previous Versions

v0.1.1

  • Initial public release of MissMecha on PyPI

  • Support for MCAR, MAR, and MNAR simulation

  • Evaluation tools (MCAR test, imputation error)

  • Visual tools for missingness patterns

Stay tuned for more updates!