Overall Objectives
Research Program
Application Domains
Software and Platforms
Partnerships and Cooperations
Bibliography
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## Section: New Results

### Ontology matching and alignments

We pursue our work on ontology matching and alignment support with contributions to evaluation and alignment semantics.

#### Evaluation

This year, we ran two evaluation campaigns named 2011.5 and 2012. This was justified by the will to complete full evaluations using the support of the seals platform. Hence, the main activities carried out in 2012 were related to the automation of the evaluation. This involved providing participants with a better way to bundle their tools so that they can be evaluated both offline and within the seals platform. It also required to support more organisers to provide test case within the plaform.

This work has been used in the oaei 2012 evaluation campaign. oaei 2012 offered 9 different test sets (7 of which under the seals platform). This issue brought the following results:

• More participants than ever (21);

• All ontology matchers running on the SEALS platform (18);

• Increased performances in terms of precision and recall;

• Matchers are now very scalable and can deal with the largest available ontologies (9 systems able to deal with the very large medical ontology SnoMed);

We have also introduced as a data set, the benchmark for multilingual ontology matching developed last year [6] . It has pushed matcher developers to address multilingual issues.

The participating systems and evaluation results were presented in the 7th Ontology Matching workshop, that was held in Boston, MA, US [22] , [7] . More information on oaei can be found at http://oaei.ontologymatching.org/ .

#### Semantics for weighted correspondences

This work has been made in cooperation with Alexander Borgida (Rutgers University) and Chiara Ghidini and Luciano Serafini (Fondazione Bruno Kessler).