“…Many researches have discussed the characteristics of an ontology evolution process (Klein, 2004;Stojanovic et al, 2002a;Stojanovic et al, 2002b) and several ontology evolution approaches have been proposed in the literature. Some focus on specific change management issues like capturing change requirements (Stojanovic, Stojanovic, Gonzalez, & Studer, 2003a;Cimiano & Völker, 2005;Bloehdorn, Haase, Sure, & Voelker, 2006), change detection and version logging (Klein, Fensel, Kiryakov, & Ognyanov, 2002a;Noy, Kunnatur, Klein, & Musen, 2004;Plessers & De Troyer, 2005;Eder & Wiggisser, 2007), formal change specification (Stojanovic, Stojanovic, & Volz, 2002c;Klein, 2004;Plessers De Troyer, & Casteleyn, 2007), change implementation (Stojanovic, Maedche, Stojanovic, & Studer, 2003b;Stojanovic, 2004;Flouris, 2006), consistency maintenance (Stojanovic, 2004 ;Haase & Stojanovic, 2005;Haase & Völker, 2005;Plessers & De Troyer, 2006), ontology versioning (Klein & Fensel, 2001;Klein et al, 2002a;Klein, 2004), and others propose a more or less global evolution process including change impact analysis and resolution as well as change propagation to dependant artifacts (objects, ontologies and applications referenced by the ontology) (Stojanovic, 2004;Klein, 2004;Bloehdorn et al, 2006). In this section, we present the main approaches and we analyze the functionalities that they support.…”