Ontology matching is an efficient method to establish interoperability among heterogeneous ontologies. Large-scale ontology matching still remains a big challenge for its time and large memory space consumption. The actual solution to this problem is ontology partitioning, which is also challenging. This paper presents DeepOM, an ontology matching system, to deal with this large-scale heterogeneity problem without partitioning using deep learning techniques. It consists of creating semantic embeddings for concepts of input ontologies using a reference ontology and uses them to train an auto-encoder in order to learn more accurate and less dimensional representations for concepts. The experimental results of its evaluation on large ontologies and its comparison with different ontology matching systems which have participated to the same test challenge are very encouraging with a precision score of 0.99. They demonstrate the higher efficiency of the proposed system to increase the performance of the large-scale ontology matching task.
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