52 страниц. 2011 год. LAP Lambert Academic Publishing The main focus of this research repport is ot portrait and highlights the important features and measurements of the ontology learning. First, define different methodologies and approaches which are utilized for automatic extraction of the information from the population of text (structured text, existing ontologies). Second, describe the different espects researchers. Define the aim of these evolutionary methodologies for ontology learning. Third, the evalution methods of ontology learning and applications of ontology learning.