com.google.ortools.pdlp

Interface MalitskyPockParamsOrBuilder

All Superinterfaces:

com.google.protobuf.MessageLiteOrBuilder, com.google.protobuf.MessageOrBuilder

All Known Implementing Classes:

MalitskyPockParams, MalitskyPockParams.Builder

public interface MalitskyPockParamsOrBuilder
extends com.google.protobuf.MessageOrBuilder

Method Summary

Modifier and Type	Method and Description
double	getLinesearchContractionFactor() Contraction factor used in the linesearch condition of Malitsky and Pock.
double	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.
double	getStepSizeInterpolation() Malitsky and Pock linesearch rule permits an arbitrary choice of the first step size guess within an interval [m, M].
boolean	hasLinesearchContractionFactor() Contraction factor used in the linesearch condition of Malitsky and Pock.
boolean	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.
boolean	hasStepSizeInterpolation() Malitsky and Pock linesearch rule permits an arbitrary choice of the first step size guess within an interval [m, M].

Methods inherited from interface com.google.protobuf.MessageOrBuilder

findInitializationErrors, getAllFields, getDefaultInstanceForType, getDescriptorForType, getField, getInitializationErrorString, getOneofFieldDescriptor, getRepeatedField, getRepeatedFieldCount, getUnknownFields, hasField, hasOneof

Methods inherited from interface com.google.protobuf.MessageLiteOrBuilder

isInitialized

Method Detail

hasStepSizeDownscalingFactor

boolean 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.

getStepSizeDownscalingFactor

double 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.

hasLinesearchContractionFactor

boolean 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.

getLinesearchContractionFactor

double 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.

hasStepSizeInterpolation

boolean 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.

getStepSizeInterpolation

double 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.