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Wirelesses Local Area Networks (WLANs) have become more prevalent and are widely deployed in many popular places like university campuses, cafés, airports, residences, etc. However, WLAN security is a very important but usually neglected issue. Focusing on three major types of typical wireless security standards: WEP, WPA and WPA2, we aim to explore(More)
Personalization is a difficult problem related to fields and applications ranging from information retrieval to multimedia content manipulation. Challenge is greater, when trying to combine traditional personalization techniques with novel knowledge representations like ontologies. This paper proposes a novel contextual knowledge modeling, based on(More)
In this chapter, we present our approach to semantic image analysis. Ontologies are used to capture a domain's general, spatial and contextual knowledge and a genetic algorithm is applied to fulfil the final annotation. The employed domain knowledge considers high-level information in terms of the concepts of interest of the examined domain, contextual(More)
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