ea

Standardized building blocks related to Evolutionary Algorithms.

Subpackages

• population_management
• selection

Package Contents

Classes

Generation	Generic SQLAlchemy model for a generation.
Individual	Generic SQLAlchemy model for an individual.
Parameters	An SQLAlchemy mixing that provides a parameters column that is a tuple of floats.
Population	Generic SQLAlchemy model for a population.

class Generation

Bases: experimentation.database.HasId, sqlalchemy.orm.MappedAsDataclass, Generic[TPopulation]

Generic SQLAlchemy model for a generation.

Inherit from this to create your own generation type and table.

The generic parameter TPopulation refers to the user-defined population type. This parameter cannot be a forward reference.

For example:

class MyGeneration(Base, Generation[MyPopulation]):
    __tablename__ = "my_generation"

classmethod __init_subclass__(/, **kwargs: dict[str, Any]) → None

Initialize a version of this class when it is subclassed.

Gets the actual type of TPopulation and stores it for later use. :param kwargs: Remaining arguments passed to super.

class Individual

Bases: experimentation.database.HasId, sqlalchemy.orm.MappedAsDataclass, Generic[TGenotype]

Generic SQLAlchemy model for an individual.

Inherit from this to create your own individual type.

This class is designed to be part of a Population. The metaclass argument population_table must contain the name of the population table.

The generic parameter TGenotype refers to the user-defined genotype type, which should have an id field that will be used as a foreign key reference. This parameter cannot be a forward reference.

For example:

class MyIndividual(Base, Individual[MyGenotype], population_table="my_population"):
    __tablename__ = "my_individual"

classmethod __init_subclass__(population_table: str, **kwargs: dict[str, Any]) → None

Initialize a version of this class when it is subclassed.

Gets the actual type of TGenotype and value of population_table and stores them for later use.

Parameters:

• population_table – Name of the population table.

• kwargs – Remaining arguments passed to super.

class Parameters

Bases: sqlalchemy.orm.MappedAsDataclass

An SQLAlchemy mixing that provides a parameters column that is a tuple of floats.

The parameters are saved in the database as string of semicolon seperated floats.

parameters: numpy.typing.NDArray[numpy.float_]

class Population

Bases: experimentation.database.HasId, sqlalchemy.orm.MappedAsDataclass, Generic[TIndividual]

Generic SQLAlchemy model for a population.

Inherit from this to create your own population type.

The generic parameter TIndividual refers to the user-defined individual type. This parameter cannot be a forward reference.

For example:

class MyPopulation(Base, Population[MyIndividual]):
    __tablename__ = "my_population"

classmethod __init_subclass__(/, **kwargs: dict[str, Any]) → None

Initialize a version of this class when it is subclassed.

Gets the actual type of TIndividual and stores it for later use.

Parameters:

kwargs – Remaining arguments passed to super.