Ontology Alignment at the Instance and Schema Level
  We present PARIS, an approach for the automatic alignment of ontologies.
PARIS aligns not only instances, but also relations and classes. Alignments at
the instance-level cross-fertilize with alignments at the schema-level.
Thereby, our system provides a truly holistic solution to the problem of
ontology alignment. The heart of the approach is probabilistic. This allows
PARIS to run without any parameter tuning. We demonstrate the efficiency of the
algorithm and its precision through extensive experiments. In particular, we
obtain a precision of around 90% in experiments with two of the world's largest
ontologies.
