Package org.ddolib.examples.pigmentscheduling

Class PSDdoMain

java.lang.Object

org.ddolib.examples.pigmentscheduling.PSDdoMain

public class PSDdoMain
extends Object

The Pigment Sequencing Problem (PSP) with Ddo. Main class for solving a Precedence-constrained Scheduling Problem (PSP) using the Decision Diagram Optimization (DDO) algorithm.

This program loads a PSP instance (from a file or a default path), constructs a DdoModel that defines the problem structure, its relaxation, ranking strategy, and lower bound, then runs the DDO solver to minimize the total scheduling cost.

The solution and search statistics are printed to the console once the solver terminates.

Usage:

 java PSDdoMain [instanceFile]
 

If no instanceFile argument is provided, the program defaults to the instance located at: data/PSP/instancesWith2items/10.

Constructor Summary

Constructors

Constructor	Description
PSDdoMain()

Method Summary

Modifier and Type	Method	Description
static void	main(String[] args)	Entry point of the program.

Methods inherited from class java.lang.Object

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

Constructor Details

PSDdoMain

public PSDdoMain()

Method Details

main

public static void main(String[] args)
                 throws IOException

Entry point of the program.

This method performs the following steps:

1. Loads a PSP instance from the provided file path (or uses a default path).
2. Builds a DdoModel specifying the problem definition, relaxation, ranking, and lower bound.
3. Invokes the DDO solver via Solvers.minimizeDdo(DdoModel, java.util.function.BiConsumer).
4. Prints the computed solution and the corresponding SearchStatistics to standard output.

Parameters:

args - optional command-line argument specifying the path to a PSP instance file. If omitted, a default instance path is used.

Throws:

IOException - if an error occurs while reading the problem instance.