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Changelog

v0.X.X Unreleased

New features

Maintenance and fixes

Documentation

Deprecation

v0.X.X Unreleased

Maintenance and fixes

  • Remove sparse dependency (#121)

Documentation

  • Update README to mention formulae supports Python>=3.8 (#121)

v0.6.0

New features

  • Add as_dataframe() method to GroupEffectsMatrix (#115)
  • Use sparse matrices for group-specific design matrices (#117, #118, #119)

Maintenance and fixes

  • Fix pandas version check (#110)
  • Test on Python 3.10, 3.11, and 3.12 (#113)
  • Migrate development tooling and workflow to pixi (#116)

Deprecation

  • Drop support for Python 3.7; Python ≥ 3.8 is now required (#110)

v0.5.4

Maintenance and fixes

  • Make sure model_description always returns a Model instance (#112)

v0.5.3

Maintenance and fixes

  • Make formulae reach transformations before outer names (#109)

v0.5.2

Maintenance and fixes

  • Update is_categorical_dtype for pandas >= 2.10 (#105)
  • Add automatic versioning to the library (#106)
  • Interpret True, False, and None as Python literals (#107)

v0.5.1

Maintenance and fixes

  • Fix bug when intercept is inserted after categorical variable (#102)

v0.5.0

New features

  • The library now supports configuration variables (#95)
  • Allow evaluations on new data with new categories (#96)
  • Return ready to be used group-specific effects design matrix when there are new groups (#100)

Maintenance and fixes

  • Fix typo in str (#99)

Documentation

Deprecation

v0.4.0

New features

  • Implement a @register_stateful_transform decorator to register new stateful transformations (#85)

Maintenance and fixes

  • Fix evaluation of new offset terms with call arguments (#81)
  • Multiple calls with unnamed attributes resulted in errors due to trying to hash unhashable types (#88)
  • Term names with call components now use the proper lexeme when one argument is a string (#89)
  • Detect stateful transformations by attribute instead of name (#90)
  • Moved tests out of the formulae directory (#91)
  • Use pyproject and improve deployment workflow (#92)

Documentation

Deprecation

v0.3.4

Maintenance and fixes

  • Fixed a bug in the levels of interaction terms involving numeric terms with multiple columns (b4a1f73)

v0.3.3

Maintenance and fixes

  • Fixed a bug in CategoricalBox. Now it considers the order of the categories if data is ordered and levels is None (#73)

v0.3.2

Maintenance and fixes

  • Fixed a bug in CategoricalBox because it failed to convert categorical series to numpy arrays. Now it works. (#72)

v0.3.1

Maintenance and fixes

  • Renamed ResponseVector to ResponseMatrix (#71)
  • Renamed design_vector to design_matrix in ResponseMatrix(#71)
  • Updated docstrings in formulae/matrices.py (#71)

Deprecation

  • Removed binary and success attributes from ResponseMatrix (#71)

v0.3.0

New features

  • We can create our own encodings such as Treatment or Sum encoding. These are subclasses of Encoding.
  • Added two aliases T and S that are shorthands of C(var, Treatment) and C(var, Sum) respectively.
  • DesignVector, CommonEffectsMatrix and GroupEffectsMatrix now retrieve their values when passed to np.array() and np.asarray().
  • Add poly() stateful transform.
  • na_action in design_matrices() can be "pass" which means not to drop or raise error about missing values. It just keeps them (#69)
  • design_matrices() gains a new argument extra_namespace. It allows us to pass a dictionary of transformations that are made available in the environment where the formula is evaluated (#70)

Maintenance and fixes

  • Fixed a bug in the addition of lower order terms when the original higher order term wasn't full-rank.
  • Columns for categorical terms are integer by default. They are casted to float only if there are other float-valued columns in the design matrix.
  • Updated str and repr methods of ResponseVector, CommonEffectsMatrix, and GroupEffectsMatrix.
  • Added str and repr methods for DesignMatrices.
  • Added get_item method for DesignMatrices.
  • Added support for comparison operators within function calls.

v0.2.0

  • Added bs(), a stateful transformation for basis splines (#52)
  • Subset notation in response terms can now be an identifier. It is interpreted as a string (#52)
  • True, False and None are correctly evaluated in function calls arguments now (#53)
  • The .set_type() on each term used to be called twice. Now we call it once (#53)
  • Added the function get_function_from_module(). Now we don't use Python's eval() anymore (#53)

v0.1.4

  • Revert changes back to v0.1.2

v0.1.3

  • Revert changes back to v0.1.1

v0.1.2

  • Added prop() function to handle response terms that a proportion computed from two variables (#40)
  • Categorical responses can contain more than one level (#40)
  • Added binary() function to convert numeric/categorical variables into 0-1 variables (#41)
  • Modified C() to make it simpler to obtain categorical variables and manipulate their levels (#41)
  • Added offset() (#42)

v0.1.1

Maintenance and fixes

  • Fix group-specific effects matrix shape (#35)

Documentation

  • Add a Getting started section to webpage and remove that content from README.md (#36)

v0.1.0

New features

  • Factor of group specific effect can be an interaction now (#31)

Maintenance and fixes

  • Full interaction does not result in shared components anymore (#30)
  • Add information about levels to interaction terms (#33)

Deprecation

Documentation

  • Added Internals section to documentation (#28)

v0.0.10

New features

Maintenance and fixes

  • Nested stateful transofrmations now work as expected (#19)

Deprecation

Documentation

  • Added a changelog file to track changes (#20)
  • Formulae now has a github pages website (#21)