Maurice Hermans

 Ontologies  Ontology Mapping  Research Question  String Similarities  Winkler Extension  Proposed Extension  Evaluation  Results  Conclusion Bachelor Conference

 Provide a vocabulary of terms that describe a domain of interest  There are several ways in which ontologies can differ: ◦ Encoding ◦ Lexical ◦ Syntactic ◦ Semantic ◦ Semiotic Bachelor Conference

 Knowledge systems used in the same domain can be built according to different specifications and requirements  This makes it very hard to exchange data between multiple knowledge systems which do not use the same ontology  Ontology mapping frameworks provide knowledge systems with the capacity to exchange information with other knowledge systems which use different ontologies Bachelor Conference

To what extend can string similarities, applied to concept names, be improved such that these are better suited for ontology mapping? Bachelor Conference

 Levenshtein ◦ Uses the number of edit operations required to convert string one string to another  Jaro ◦ Uses the number of matching characters between two strings and their relative position  Jaccard ◦ Compares the sets of tokens of two strings  SoftTFIDF ◦ Includes tokens which are similar according to a secondary similarity function Bachelor Conference

Bachelor Conference

Bachelor Conference

Two partial ontologies from the OAEI dataset Bachelor Conference

 Two datasets are used: ◦ 2010 Ontology Alignment Evaluation Initiative ◦ Dataset created by Cohen et al  Similarities are evaluated using precision and recall values Bachelor Conference

OAEICohen Optimal weight for both datasets is around Bachelor Conference

OAEICohen Bachelor Conference

OAEICohen Bachelor Conference

OAEICohen Bachelor Conference

Bachelor Conference