changelog.md

Version 0.7.2

• MAINT #671465e2: Make loading json files from earlier versions backwards compatible

Version 0.7.1

• MAINT #321: De-cythonize main modules, add deprecation wranings

Version 0.7.0

• Many bugfixes, please see Github

Version 0.6.1

• MAINT #286: Add support for Python 3.11.
• FIX #282: Fixes a memory leak in the neighborhood generation of integer hyperparameters.

Version 0.6.0

• ADD #255: An easy interface of Float, Integer, Categorical for creating search spaces.
• ADD #243: Add forbidden relations between two hyperparamters
• MAINT #243: Change branch master to main
• FIX #259: Numpy runtime error when rounding
• FIX #247: No longer errors when serliazing spaces with an InCondition
• FIX #219: Hyperparamters correctly active with diamond-or conditions

Version 0.5.0

• FIX #231: Links to the pcs formats.
• FIX #230: Allow Forbidden Clauses with non-numeric values.
• FIX #232: Equality == between hyperparameters now considers default values.
• FIX #221: Normal Hyperparameters should now properly sample from correct distribution in log space
• FIX #221: Fixed boundary problems with integer hyperparameters due to numerical rounding after sampling.
• MAINT #221: Categorical Hyperparameters now always have associated probabilities, remaining uniform if non are provided. (Same behaviour)
• ADD #222: BetaFloat and BetaInteger hyperparamters, hyperparameters distributed according to a beta distribution.
• ADD #241: Implements support for PiBo, you can now embed some prior distribution knowledge into ConfigSpace hyperparameters.
  • See the example here.
  • Hyperparameters now have a pdf(vector: np.ndarray) -> np.ndarray to get the probability density values for the input
  • Hyperparameters now have a get_max_density() -> float to get the greatest value in it's probability distribution function, the probability of the mode of the distriubtion.
  • ConfigurationSpace objects now have a remove_parameter_priors() -> ConfigurationSpace to remove any priors

Version 0.4.21

• Add #224: Now builds binary wheels for Windows/Mac/Linux, available on PyPI.
• Maint #227: Include automated testing for windows and mac.
• Maint #228: #226: Account for test differences with i686 architectures.
• Maint #213, #215: Prevent double trigger of github workflows.
• Fix #212: Equality (==) on CategoricalHyperparameter objects are now invariant to ordering.
• Add #208: ConfigurationSpace::estimate_size() to get the size of a configuration space without considering constraints.
• Add #210: print(config) is now produces a string representation of a valid python dictionary that is suitable for copy and paste.
• Fix #203: Parser for pcs files now correctly coverts types for forbidden clauses, checking for the validaty as well.
• Maint #f71508c: Clean up in README.md and fix link for new SMAC example docs.
• Fix #202: Fix numerical underflow when performing quantization of log sampled UniformFloat.
• Add #188: Support for a truncated NormalIntegerHyperparameter or NormalFloatHyperparameter by providing lower and upper bounds.
• Fix #195: Sampling configurations to perform validity checks for during get_one_exchange_neighborhood is now deterministic w.r.t. a seed.

Version 0.4.20

• MAINT #185: Drop support for Python 3.6
• FIX #190: Remove old files with old GPL-3.0 license
• ADD #191: Configuration and ConfigurationSpace can now act as mappings

Version 0.4.19

• ADD #184: Wheels.
• FIX #176: copy meta field in add_configuration_space
• MAINT #181: Run Flake8 on Cython code
• MAINT #182: Replace rich comparisons by __eq__ in Cython code
• MAINT #183: Cleanup warnings.

Version 0.4.18

• ADD #164: New method rvs for hyperparameters to allow them being used with scikit-learn's hyperparameter optimization tools.
• FIX #173: Fixes a numpy ABI incompatibility problem with numpy 1.20

Version 0.4.17

• MAINT #168: Support for Python. 3.9.X

Version 0.4.16

• FIX #167: fix a broken equal comparison in forbidden constraints.

Version 0.4.15

• Add pyproject.toml to support wheel installation as required in PEP518

Version 0.4.14

• ADD new argument config_id to Configuration which can be set by an application using the ConfigSpace package (None by default).
• FIX #157 fix a bug in get_random_neighbor where the last hyperparameter value was never changed.
• MAINT #136 remove asterisk in version identifier in setup.py.
• MAINT #156 add ConstantHyperparameter to the API documentation.
• MAINT #159 document that None is a forbidden value for CategoricalHyperparameter and OrdinalHyperparameter.

Version 0.4.13

• ADD Python3.8 support, drop Python3.5 support (#144, #153)
• FIX copy weights of CategoricalHyperparameter (#148)
• FIX store weights of CategoricalHyperparameter, raise an error message for the other output writers (#152).
• FIX correct types in util function fix_types (#134)
• MAINT unit test of the source distribution (#154)

Version 0.4.12

• ADD #135: Add weights to the sampling of categorical hyperparameters.
• MAINT #129: Performance improvements for the generation of neighbor configurations.
• MAINT #130: Test the installability of a distribution on travis-ci.
• FIX #140: Fixes a bug which led to samples lower than the lower bound of UniformFloatHyperparemeter if the lower bound was larger than zero and quantization was used.
• FIX # 138: Fixes a bug in which the readme wasn't read correctly on systems not using UTF8 as their default encoding.

Version 0.4.11

• MAINT #115: install numpy during installation if it is not already installed.
• MAINT #124: add section on what to cite to the readme file.
• MAINT via #127: speed improvement for neigborhood generation of integer hyperparameters.
• FIX: Neighborhood of an integer hyperparameter does no longer contain duplicate values.
• FIX #117: Fix sampling of OrCondition.
• FIX #119: Allow sampling of multiple quantized integers.
• FIX via #118: Fix error message.

Version 0.4.10

• DOC: improved documentation and plenty of new docstrings.
• FIX #114: Checking categorical hyperparameters for uniqueness.
• MAINT #110: temporarily disable categorical value None
• MAINT #112: improved unit tests and compilation; new pep8 checks

Version 0.4.9

• Fixes an issue where adding a new forbidden for an unknown hyperparameter did not result in an immediate exception.
• Add a new argument vector to util.deactivate_inactive_hyperparameters
• Make the number of categories a public variable for categorical and ordinal hyperparameters

Version 0.4.8

• Fixes an issue which made serialization of ForbiddenInCondition to json fail.
• MAINT #101: Improved error message on setting illegal value in a configuration.
• DOC #91: Added a documentation to automl.github.io/ConfigSpace

Version 0.4.7

• Tests Python3.7.
• Fixes #87: better handling of Conjunctions when adding them to the configuration space.
• MAINT: Improved type annotation in util.py which results in improved performance (due to better Cython optimization).
• MAINT: util.get_one_exchange_neighborhood now accepts two arguments num_neighbors and stdev which govern the neighborhood creation behaviour of several continuous hyperparameters.
• NEW #85: Add function to obtain active hyperparameters
• NEW #84: Add field for meta-data to the configuration space object.
• MAINT: json serialization now has an argument to control indentation

Version 0.4.6

• Fixes a bug which caused a KeyError on the usage of tuples in InCondition.

Version 0.4.5

• Stricter typechecking by using a new Cython features which automatically transfers type annotations into type checks at compilation time.
• New attribute of the ConfigSpace object: name
• Added JSON as a new, experimental serialization format for configuration spaces.
• Fixed a bug writing AND-conjunctions in the pcs writer.
• Fixed a lot of hash functions which broke during the conversion to Cython

Version 0.4.4

• Fixes issue #49. The Configuration object no longer iterates over inactive hyperparameters which resulted in an unintuitive API.

Version 0.4.3

• Fix a memory leak when repeatedly sampling a large amount of configurations.

Version 0.4.2

• Fix a bug which caused a segfault when trying to sample zero configurations.

Version 0.4.1

• Rewrite of major functions in Cython
• Attribute default of class Hyperparameter is renamed to default_value.
• Package io is renamed to read_and_write.

Version 0.3.10

• Fix issue #56. The writer for the new pcs format can now write correct conjunctions of forbidden parameters.
• The class Configuration now raises an exception if trying to instantiate it with an illegal value for a hyperparameter

Version 0.3.9

• Fix issue #53. Functionality for retrieving a one exchange neighborhood does no longer create illegal configurations when hyperparameters have extreme ranges.
• New functionality __setitem__ for Configuration. Allows dictionary syntax to change the value of one hyperparameter in a configuration.

Version 0.3.8

• Fix issue #25. Parents and children are now sorted topologically in the underlying datastructure.
• The reader and writer for the new pcs format can now handle Constants.
• Speed improvements for one exchange neighborhood

Version 0.3.7

• Faster checking of valid configurations
• Fixes a bug in sampling configurations for SatenStein
• Fixes a bug getting neighbors from OrdinalHyperparameter
• Fixes a bug getting neighbors from a UniformIntegerHyperparameter
• Utility function to deactivate inactive, but specified hyperparameters
• Fixes a bug in retrieving the one exchange neighborhood, i.e. it could not change the value of parent parameters

Version 0.3.6

• Minor speed improvements when checking forbidden clauses

Version 0.3.5

• Even more speed improvements for highly conditional configurations
• Speed improvements for retrieving neighbor configurations

Version 0.3.4

• Further improve sampling speed for highly conditional configuration spaces

Version 0.3.3

• Improve sampling speed for highly conditional configuration spaces

Version 0.3.2

• FIX: do not store None when calling populate_values on a Configuration
• FIX #26: raise Exception if argument has the wrong type.
• FIX #25: a bug related to sorting hyperparameters when reading them from a PCS files.

Version 0.3.1

• MAINT: fix endless loop in get_one_exchange_neighborhood.

Version 0.3

• MAINT: improve speed of get_one_exchange_neighborhood. This changes the return value of the function from a list to a generator.

Version 0.2.3

• FIX: allow installation via python setup.py install
• MAINT: drop python2.7 support, add python3.6 support
• MAINT: improve performance of add_configuration_space
• FIX: a bug in add_configuration_space which changed the names of the hyperparameters of a child configuration space
• MAINT: new helper functions add_hyperparameters and add_conditions.

Version 0.2.2

• ADD: two convenience functions to improve working with HPOlib2
• MAINT: default seed of ConfigurationSpace is now None instead of 1. This makes the package behave like other scientific programming packages.
• FIX: improve bounds checking for log-space hyperparameters
• FIX: version information is now in a separate file.
• MAINT: improve sampling speed by breaking the sampling loop earlier when possible

Version 0.2.1

• FIX: bug which changed order of hyperparameters when adding new hyperparameter. This was non-deterministic due to the use of dict instead of OrderedDict.
• FIX: compare configurations with == instead of numpy.allclose.
• FIX: issue 2, syntax error no longer present during installation
• FIX: json serialization of configurations and their hyperparameters can now be deserialized by json and still compare equal

Version 0.2

• FIX: bug which made integer values have different float values in the underlying vector representation.
• FIX: bug which could make two configuration spaces compare unequal due to the use of defaultdict
• FEATURE: new feature add_configuration_space, which allows to add a whole configuration space into an existing configuration space
• FEATURE: python3.5 support
• FIX: add function get_parent() to Conjunctions (issue #1)
• Added this Changelog.