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...t management/propagation of these changes to dependent elements” [3]. Based on the different perspectives of the researchers, there are different solutions provided to handle ontology evolution [3][6]=-=[7]-=-[8]. Different phases of ontology evolution have been identified [3]. Basic changes in the evolving ontology can be captured using operators. However, the identified change operators focus on generic ...

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...formation discovery component. The data validation component identifies new terms that are relevant for the 1 http://semanticweb.kmi.open.ac.uk 2 Detailed description of the framework can be found in =-=[18]-=-.946 F. Zablith ontology. It also checks the quality of content and filters out noise generated from the information discovery component. The validated information is passed to the ontology changes c...

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.... The experiments [8] have led to further insights into to nature of ontologies on the Semantic Web, from which we highlight two key ones. First, we found that 7 An overview of Evolva can be found in =-=[5, 6]-=-.online ontologies have a poor coverage of a variety of tag types denoting novel terminology scientific terms, multilingual terms and domain specific jargons. Secondly, we observed that online ontolo...

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...elties, which will be captured by the demo, is in pioneering the use of background knowledge to decrease user input [12]. 2 Underlying Approach: The Evolva Framework The Evolva framework (detailed in =-=[11]-=-) consists of five main components as shown in Figure 1 and described next. Information Discovery. New information can be potentially discovered in external data sources. Contrasting the ontology with...

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...ently addressed under different scopes – the domainoriented scope and the application- or usage-oriented scope. The most important representative for research on the first scope is the work of Zablith=-=[23]-=-, who concentrates on the usage of background knowledge for ontology evolution purposes. Regarding the two factors sufficiency of an ontology and conciseness of an ontology one could state that Zablit...

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... matcher. During validation, automated methods remove noisy terms that, for ex⋆ This work is funded by the NeOn project sponsored under EC grant IST-FF6-027595 1 An overview of Evolva can be found in =-=[12]-=- and [13]. 2 http://semanticweb.kmi.open.ac.uk/ 3 http://www.neon-toolkit.org/ample, fall below a minimum term length threshold. We also have a filter for removing irrelevant terms such as the generi...

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..., 2000) and OilEd (Bechhofer et al, 2001). One set of approaches (Alani et al, 2006; Bloehdorn et al, 2006; Novacek et al, 2007; Novacek et al, 2008, Ottens and Glize, 2007; Cimiano and Volker, 2005; =-=Zablith, 2007-=-, Zablith et al, 2008) in ontology evolution identify potential novel information that should be added to the ontology by exploiting the changes occurring in the various data sources. Such approaches ...

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... this area generally falls under the name of Ontology Change or Ontology Evolution [10]. Two of the major issues in this area are the following. The first one is how to automate the evolution process =-=[31]-=-. In fact, manual updates might be too impractical if ontologies are large or if the updates need to be frequent. The second one, tightly connected to the first one, is how to make sure that the evolv...

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...area or in the business environment and reasons for change include conceptualization, representation or specification of the domain. State-of-the-art ontology evolution process has six defined phases =-=[8,9,10]-=-. The first phase, “change capture”, focuses on investigation and capturing changes to the domain such as new concepts, out-dated concepts or updated concepts. The second phase is “change representati...