1. X-SOM A Flexible Ontology Mapper Carlo Curino, Giorgio Orsi , Letizia Tanca {curino,orsi,tanca}@elet.polimi.it Politecnico di Milano Dipartimento di Elettronica e Informazione September 4 th SWAE 2007 (DEXA’07)‏ Regensburg

4. The Problem Alignment Ontology Alignment : The process of bringing two or more ontologies into mutual agreement , by relating their constitutive elements by means of alignment relationships , and making them coherent and consistent. .

5. The Problem Matching Ontology Alignment : The process of bringing two or more ontologies into mutual agreement , by relating their constitutive elements by means of alignment relationships , and making them coherent and consistent. .

6. The Problem Mapping Ontology Alignment : The process of bringing two or more ontologies into mutual agreement , by relating their constitutive elements by means of alignment relationships , and making them coherent and consistent.

7. X-SOM’s mapping process Matching: Similarities between ontologies computed with a customizable set of matching algorithms (strategy). The results are combined by means of a feed-forward neural network. Debugging: Matchings are tested for consistency and coherency to improve their quality. Conflicts are solved in a (semi-)automatic fashion. Mapping: An ontology containing the mappings between the constitutive components of the input ontologies.

15. Experimental Results: OAEI 2007

16. Experimental Results: OAEI 2007

20. Overall System Architecture

21. Models view