nifty7.operators.simplify_for_const module

class ConstCollector

Bases: object

add(const, fulldom)

property constfield

mult(const, fulldom)

class ConstantEnergyOperator(output)

Bases: nifty7.operators.energy_operators.EnergyOperator

Operator which has a scalar domain as target domain.

It is intended as an objective function for field inference. It can implement a positive definite, symmetric form (called metric) that is used as curvature for second-order minimizations.

Examples

• Information Hamiltonian, i.e. negative-log-probabilities.

• Gibbs free energy, i.e. an averaged Hamiltonian, aka Kullback-Leibler divergence.

apply(x)

Applies the operator to a Field or MultiField.

Parameters

x (Field or MultiField) – Input on which the operator shall act. Needs to be defined on domain.

class ConstantOperator(output)

Bases: nifty7.operators.operator.Operator

Transforms values defined on one domain into values defined on another domain, and can also provide the Jacobian.

__repr__()

Return repr(self).

apply(x)

Applies the operator to a Field or MultiField.

Parameters

x (Field or MultiField) – Input on which the operator shall act. Needs to be defined on domain.

class InsertionOperator(target, cst_field)

Bases: nifty7.operators.operator.Operator

Transforms values defined on one domain into values defined on another domain, and can also provide the Jacobian.

__repr__()

Return repr(self).

apply(x)

Applies the operator to a Field or MultiField.

Parameters

x (Field or MultiField) – Input on which the operator shall act. Needs to be defined on domain.

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nifty7.operators.simple_linear_operators module

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nifty7.operators.sum_operator module