PISA-Plugin

Enables using PISA - A Platform and Programming Language Independent Interface for Search Algorithms selectors within the MOEA Framework. If using any of the PISA algorithms, please cite:

Bleuler, Stefan, Marco Laumanns, Lothar Thiele and Eckart Zitzler. “PISA: A Platform and Programming Language Independent Interface for Search Algorithms.” International Conference on Evolutionary Multi-Criterion Optimization (2003).

Installation

Add the following dependency to your pom.xml:

<dependency>
    <groupId>org.moeaframework</groupId>
    <artifactId>pisa-plugin</artifactId>
    <version>3.0.0</version>
</dependency>

Or download the JAR from the Releases into the MOEA Framework's lib/ folder.

Supported Versions

The latest versions of the MOEA Framework and the PISA-Plugin are compatible. If using an older version of the MOEA Framework, use the table below to identify which version of this plugin to use.

MOEA Framework Version	Compatible PISA-Plugin Version
>= 5.0	3.0.0
>= 4.0	2.0.0
>= 3.8	1.0.3
3.7	1.0.2
<= 3.6	Not available

Usage

Once this plugin is added, you can reference PISA selectors as you would any other algorithm:

Problem problem = new DTLZ2(3);

Algorithm algorithm = AlgorithmFactory.getInstance().getAlgorithm("hype-pisa", problem);
algorithm.run(10000);

NondominatedPopulation result = algorithm.getResult();

One key difference, however, is that PISA selectors are third-party executables. Precompiled binaries are available for Windows and Linux.

The following PISA selectors are supported. We recommend adding -pisa to the algorithm name to ensure the PISA version is used.

Selector	MOEA Framework Algorithm Name
ECEA	ecea-pisa
EpsMOEA	epsmoea-pisa
FEMO	femo-pisa
Hype	hype-pisa
IBEA	ibea-pisa
MSOPS	msops-pisa
NSGA2	nsga2-pisa
SEMO	semo-pisa
SEMO2	semo2-pisa
SHV	shv-pisa
SIBEA	sibea-pisa
SPAM	spam-pisa
SPAM2	spea2-pisa

Install All

Selectors are automatically downloaded and installed from our GitHub Mirror. To avoid this setup or to support running without an internet connection, you can preinstall all selectors by running:

java -classpath "lib/*" org.moeaframework.algorithm.pisa.PISAAlgorithms install

Blocking Downloads

Additionally, if you don't want to allow PISA selectors to be downloaded automatically, add the following to moeaframework.properties:

org.moeaframework.algorithm.pisa.allow_install = false

Building from Source

Precompiled binaries are provided for Windows and Linux. Attempting to use on a different OS will try to compile from source code. This is experimental and is not supported on all systems. You may also compile all selectors by running:

java -classpath "lib/*" org.moeaframework.algorithm.pisa.PISAAlgorithms install_source

Compiling will require the following dependencies: make, a C/C++ compiler such as gcc, unrar, unzip, and tar.