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RDFind

RDFind is a Flink-based distributed algorithm to discover conditional inclusion dependencies (CINDs). Such CINDs are a useful asset for a various RDF data management tasks, ranging from ontology reverse engineering over SPARQL query optimization to knowledge discovery. More details can be found in our SIGMOD 2016 paper. If you are using RDFind in your research, we would be pleased if you cite us:

@inproceedings{kruse2016rdfind,
  author = { Sebastian Kruse, Anja Jentzsch, Thorsten Papenbrock, Zoi Kaoudi, Jorge-Arnulfo Quiane-Ruiz, Felix Naumann },
  title = { RDFind: Scalable Conditional Inclusion Dependency Discovery in RDF Datasets },
  year = { 2016 }
}

Instructions

Requirements. RDFind is written in Scala and Java and requires Apache Maven for the build and Apache Flink for the execution.

Building RDFind. RDFind can build with Maven but requires some external dependencies to be installed beforehand.

  1. Install the RDF converter.
  • $ git clone https://github.com/sekruse/rdf-converter.git
  • $ cd rdf-converter
  • $ mvn install
  1. Install the modified Guava library.
  • $ git clone https://github.com/sekruse/guava.git
  • $ cd guava
  • $ git checkout -b extended-bloom-filters
  • $ mvn install
  1. Install RDFind.
  • $ git clone https://github.com/stratosphere/rdfind.git
  • $ cd rdfind
  • $ mvn package

Running RDFind. RDFind's main class is de.hpi.isg.sodap.rdfind.programs.RDFind. Run it without parameters, to get a list of supported parameters. Your final execution command might look something like this:

java -Djava.rmi.server.hostname=<my-ip> \
        -Dlog4j.configuration="file:conf/log4j.properties" \
        -cp "lib/*" \
        de.hpi.isg.sodap.rdfind.programs.RDFind \
        $* \
        -rex <Flink job manager host>:<Flink job manager port> \
        -jar lib/rdfind-algorithm-0.2-SNAPSHOT.jar lib/rdfind-flink-0.2-SNAPSHOT.jar lib/rdfind-util-0.2-SNAPSHOT.jar  lib/fastutil-6.5.15.jar lib/rdf-converter-0.0.2-SNAPSHOT.jar lib/guava-19.0-sekruse-SNAPSHOT.jar

In case you are facing problems with the installation or execution, feel free to contact sebastian.kruse:e-mail:hpi.de