gemseo.utils.derivatives.approximation_modes module

The approximation modes.

class ApproximationMode(*values)

Bases: StrEnum

The approximation derivation modes.

CENTERED_DIFFERENCES = 'centered_differences'

The centered differences method used to approximate the Jacobians by perturbing each variable with a small real number.

COMPLEX_STEP = 'complex_step'

The complex step method used to approximate the Jacobians by perturbing each variable with a small complex number.

FINITE_DIFFERENCES = 'finite_differences'

The finite differences method used to approximate the Jacobians by perturbing each variable with a small real number.

class HybridApproximationMode(*values)

Bases: StrEnum

The approximation derivation modes for semi-analytical computations.

HYBRID_CENTERED_DIFFERENCES = 'hybrid_centered_differences'

The centered differences method used to approxiamate the Jacobian not available analytically by perturbing those variables with a small real number.

HYBRID_COMPLEX_STEP = 'hybrid_complex_step'

"The complex step method used to approximiate the Jacobian not available analytically by perturbing those variables with a small complex number.

HYBRID_FINITE_DIFFERENCES = 'hybrid_finite_differences'

"The finite differences method used to approxiamate the Jacobian not available analytically by perturbing those variables with a small real number.