org.jorlib.frameworks.columnGeneration.util

Class Configuration

java.lang.Object

org.jorlib.frameworks.columnGeneration.util.Configuration

public class Configuration
extends Object

Singleton class providing configuration settings

Version:

13-4-2015

Author:

Joris Kinable

Field Summary

Fields

Modifier and Type	Field and Description
boolean	CUTSENABLED Enable/Disable generation of inequalities in master problem.
String	EXPORT_MASTER_DIR Define export directory for master models.
boolean	EXPORT_MODEL Define whether master problem should be written to .lp file.
int	MAXTHREADS Number of threads used by the column generation procedure.
double	PRECISION Precision parameter.
boolean	QUICK_RETURN_AFTER_CUTS_FOUND The CutHandler invokes the AbstractCutGenerator(s) one by one to generate inequalities.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	Configuration() Use default configuration
protected	Configuration(Properties properties) Use configuration from file.

Method Summary

Modifier and Type	Method and Description
static Configuration	getConfiguration() Returns the configuration
static void	readFromFile(Properties properties) Read properties from a file

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAXTHREADS

public final int MAXTHREADS

Number of threads used by the column generation procedure. Default: 4

PRECISION

public final double PRECISION

Precision parameter. DONT CHANGE THIS IF YOU ARE USING CPLEX! Default: 0.000001

CUTSENABLED

public final boolean CUTSENABLED

Enable/Disable generation of inequalities in master problem. Default: true

EXPORT_MODEL

public final boolean EXPORT_MODEL

Define whether master problem should be written to .lp file. Default: false

EXPORT_MASTER_DIR

public final String EXPORT_MASTER_DIR

Define export directory for master models. Default: ./output/masterLP/

QUICK_RETURN_AFTER_CUTS_FOUND

public final boolean QUICK_RETURN_AFTER_CUTS_FOUND

The CutHandler invokes the AbstractCutGenerator(s) one by one to generate inequalities. When a particular cutGenerator does not yield any inequalities, the cutHandler will move on to the next registered cutGenerator. When quickReturnAfterCutsFound is set to true, the cutHandler will return as soon as any inequalities have been found. When set to false, all cutGenerators will be invoked. Default: true

Constructor Detail

Configuration

protected Configuration()

Use default configuration

Configuration

protected Configuration(Properties properties)

Use configuration from file. The properties file can contain one or more of the fields mentioned. Fields not included in the properties file will default to their default values.

Parameters:

properties - properties in file

Method Detail

getConfiguration

public static Configuration getConfiguration()

Returns the configuration

Returns:

Returns configuration

readFromFile

public static void readFromFile(Properties properties)

Read properties from a file

Parameters:

properties - file containing the configuration.