Feature/pc2 #229
Feature/pc2 #229
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src/UQpy/surrogates/polynomial_chaos/PolynomialChaosExpansion.py
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src/UQpy/surrogates/polynomial_chaos/physics_informed/ConstrainedPCE.py
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| err_complete = (err_data + err_pde + err_bc) | ||
| return err_complete | ||
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| def lar(self, n_PI=50, virtual_niters=False, max_niter=None, no_iter=False, minsize_basis=1, nvirtual=None, |
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Is this one of the already implemented regression methods.? Is there is a need to duplicate it here.?
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No, this is a specific method only for physics-informed PCE. Although it use theory of Least Angle Regression, it adds additional equations describing physics in form of Karush-Kuhn-Tucker normal equations. I do not see any simple way how to use existing LAR instead of this new method.
src/UQpy/surrogates/polynomial_chaos/physics_informed/ConstrainedPCE.py
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| self.lar_error = best_err | ||
| self.lar_error_path = lar_error | ||
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| def ols(self, pce=None, nvirtual=None, calc_coeff=True, return_coeff=True, n_PI=100): |
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Is this least squares regression as already implemented in Least Squares Regression? Is there a need to recreate this function?
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No, this is a specific method only for physics-informed PCE. I do not see any simple way how to use the existing OLS instead of this new method.
src/UQpy/surrogates/polynomial_chaos/physics_informed/ConstrainedPCE.py
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src/UQpy/surrogates/polynomial_chaos/physics_informed/ConstrainedPCE.py
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[Physics-informed Polynomial Chaos Expansion]
Added new feature entitled Physics-informed Polynomial Chaos Expansion constrained to adhere to the known physics of the model, combines the conventional experimental design with additional constraints from the physics of the model. The constraints are represented by set of differential equations and specified boundary conditions.
Description
Polynomial Chaos Expansion module now contains additional branch Physics-informed Polynomial Chaos Expansion containing 4 new classes: PdeData, PdePCE, ConstrainedPCE and ReducedPCE . Its application is presented in two new examples for pce.
How Has This Been Tested?
New unit test was added, code coverage is 92%.
Types of changes
Checklist:
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