Ontology Learning Using Word Net Lexical Expansion and Text Mining

In knowledge management systems, ontologies play an important role as a backbone for providing and accessing knowledge sources. They are largely used in the next generation of the Semantic Web that focuses on supporting a better cooperation between humans and ma‐ chines [2]. Since manual ontology construction is costly, time-consuming, error-prone, and inflexible to change, it is hoped that an automated ontology learning process will result in more effective and more efficient ontology construction and also be able to create ontologies that better match a specific application [20]. Ontology learning has recently become a major focus for research whose goal is to facilitate the construction of ontologies by decreasing the amount of effort required to produce an ontology for a new domain. However, most current approaches deal with narrowly-defined specific tasks or a single part of the ontology learn‐ ing process rather than providing complete support to users. There are few studies that at‐ tempt to automate the entire ontology learning process from the collection of domainspecific literature and filtering out documents irrelevant to the domain, to text mining to build new ontologies or enrich existing ones.