Towards Knowledge Handling in Ontology-Based Information Extraction Systems

Ontologies proved to be efficient and powerful tools for gathering and sharing knowledge, providing explicit specifications of conceptualizations. However, the proper ontology construction processes and their updating of various data sources, require a huge effort and well-adjusted mechanisms to their extraction, positioning and sharing. In this context, the application of a proper Ontology-Based Information Extraction (OBIE) system may help in solving these problems. The paper is a successful attempt to purvey state-of-the-art of selected OBIE systems, followed by the process of taxonomy construction and aftermath knowledge systematization of particular OBIE approaches.