To build this project, you first need to checkout and build the main Eclipse Code Recommenders project once. This installs the necessary parent POMs and related artifacts into your local Maven repository (~/.m2/repository).
git clone http://git.eclipse.org/gitroot/recommenders/org.eclipse.recommenders.git mvn clean install -f org.eclipse.recommenders/pom.xml
Thereafter, you can build this project by simply running
mvn clean install
in the project's root directory.