Abstract
The knowledge carried by process models can be reused to guide modeling in a new project, to manage process models or to interoperate with other processes. In order to efficiently discover such knowledge from distributed model repositories, we have to deal with semantic interoperability problems due to heterogeneity of process models. In this paper, process models are semi-automatically annotated based on a process ontology and domain ontology to target the semantic interoperability issue in process models discovery.