b9ddea827b
- add init file - add docs - fixing bug System of equation, replace torch.stack with torch.hstack - add tests
32 lines
1.1 KiB
Python
32 lines
1.1 KiB
Python
""" Module """
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from .equation_interface import EquationInterface
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class Equation(EquationInterface):
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def __init__(self, equation):
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"""
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Equation class for specifing any equation in PINA.
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Each ``equation`` passed to a ``Condition`` object
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must be an ``Equation`` or ``SystemEquation``.
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:param equation: A ``torch`` callable equation to
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evaluate the residual.
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:type equation: callable
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"""
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if not callable(equation):
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raise ValueError('equation must be a callable function.'
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'Expected a callable function, got '
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f'{equation}')
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self.__equation = equation
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def residual(self, input_, output_):
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"""
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Residual computation of the equation.
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:param LabelTensor input_: Input points to evaluate the equation.
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:param LabelTensor output_: Output vectors given my a model (e.g,
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a ``FeedForward`` model).
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:return: The residual evaluation of the specified equation.
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:rtype: LabelTensor
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"""
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return self.__equation(input_, output_) |