Source code for pina.condition.domain_equation_condition
"""Module for the DomainEquationCondition class."""
from .condition_interface import ConditionInterface
from ..utils import check_consistency
from ..domain import DomainInterface
from ..equation.equation_interface import EquationInterface
[docs]
class DomainEquationCondition(ConditionInterface):
"""
The class :class:`DomainEquationCondition` defines a condition based on a
``domain`` and an ``equation``. This condition is typically used in
physics-informed problems, where the model is trained to satisfy a given
``equation`` over a specified ``domain``. The ``domain`` is used to sample
points where the ``equation`` residual is evaluated and minimized during
training.
:Example:
>>> from pina.domain import CartesianDomain
>>> from pina.equation import Equation
>>> from pina import Condition
>>> # Equation to be satisfied over the domain: # x^2 + y^2 - 1 = 0
>>> def dummy_equation(pts):
... return pts["x"]**2 + pts["y"]**2 - 1
>>> domain = CartesianDomain({"x": [0, 1], "y": [0, 1]})
>>> condition = Condition(domain=domain, equation=Equation(dummy_equation))
"""
# Available slots
__slots__ = ["domain", "equation"]
def __init__(self, domain, equation):
"""
Initialization of the :class:`DomainEquationCondition` class.
:param DomainInterface domain: The domain over which the equation is
defined.
:param EquationInterface equation: The equation to be satisfied over the
specified domain.
"""
super().__init__()
self.domain = domain
self.equation = equation
def __setattr__(self, key, value):
"""
Set the attribute value with type checking.
:param str key: The attribute name.
:param any value: The value to set for the attribute.
"""
if key == "domain":
check_consistency(value, (DomainInterface, str))
DomainEquationCondition.__dict__[key].__set__(self, value)
elif key == "equation":
check_consistency(value, (EquationInterface))
DomainEquationCondition.__dict__[key].__set__(self, value)
elif key in ("_problem"):
super().__setattr__(key, value)