operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder Interface Reference

Inheritance diagram for operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder:

Public Member Functions
boolean	hasStepSizeDownscalingFactor ()
double	getStepSizeDownscalingFactor ()
boolean	hasLinesearchContractionFactor ()
double	getLinesearchContractionFactor ()
boolean	hasStepSizeInterpolation ()
double	getStepSizeInterpolation ()

Detailed Description

Definition at line 5036 of file Solvers.java.

Member Function Documentation

getLinesearchContractionFactor()

double operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.getLinesearchContractionFactor

(

)

Contraction factor used in the linesearch condition of Malitsky and Pock.
A step size is accepted if primal_weight * primal_stepsize *
norm(constraint_matrix' * (next_dual - current_dual)) is less
than linesearch_contraction_factor * norm(next_dual - current_dual).
The default is the value used in Malitsky and Pock (2016).

optional double linesearch_contraction_factor = 2 [default = 0.99];

Returns

The linesearchContractionFactor.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

getStepSizeDownscalingFactor()

double operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.getStepSizeDownscalingFactor

(

)

At every inner iteration the algorithm can decide to accept the step size
or to update it to step_size = step_size_downscaling_factor * step_size.
This parameter should lie between 0 and 1. The default is the value used in
Malitsky and Pock (2016).

optional double step_size_downscaling_factor = 1 [default = 0.7];

Returns

The stepSizeDownscalingFactor.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

getStepSizeInterpolation()

double operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.getStepSizeInterpolation

(

)

Malitsky and Pock linesearch rule permits an arbitrary choice of the first
step size guess within an interval [m, M]. This parameter determines where
in that interval to pick the step size. In particular, the next stepsize is
given by m + step_size_interpolation*(M - m). The default is the value used
in Malitsky and Pock (2016).

optional double step_size_interpolation = 3 [default = 1];

Returns

The stepSizeInterpolation.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

hasLinesearchContractionFactor()

boolean operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.hasLinesearchContractionFactor

(

)

Contraction factor used in the linesearch condition of Malitsky and Pock.
A step size is accepted if primal_weight * primal_stepsize *
norm(constraint_matrix' * (next_dual - current_dual)) is less
than linesearch_contraction_factor * norm(next_dual - current_dual).
The default is the value used in Malitsky and Pock (2016).

optional double linesearch_contraction_factor = 2 [default = 0.99];

Returns

Whether the linesearchContractionFactor field is set.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

hasStepSizeDownscalingFactor()

boolean operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.hasStepSizeDownscalingFactor

(

)

At every inner iteration the algorithm can decide to accept the step size
or to update it to step_size = step_size_downscaling_factor * step_size.
This parameter should lie between 0 and 1. The default is the value used in
Malitsky and Pock (2016).

optional double step_size_downscaling_factor = 1 [default = 0.7];

Returns

Whether the stepSizeDownscalingFactor field is set.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

hasStepSizeInterpolation()

boolean operations_research.pdlp.Solvers.MalitskyPockParamsOrBuilder.hasStepSizeInterpolation

(

)

Malitsky and Pock linesearch rule permits an arbitrary choice of the first
step size guess within an interval [m, M]. This parameter determines where
in that interval to pick the step size. In particular, the next stepsize is
given by m + step_size_interpolation*(M - m). The default is the value used
in Malitsky and Pock (2016).

optional double step_size_interpolation = 3 [default = 1];

Returns

Whether the stepSizeInterpolation field is set.

Implemented in operations_research.pdlp.Solvers.MalitskyPockParams, and operations_research.pdlp.Solvers.MalitskyPockParams.Builder.

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The documentation for this interface was generated from the following file:

• build/java/ortools-java/src/main/java/operations_research/pdlp/Solvers.java