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In adaptive learning environments, this exchange of online presence data cannot be considered isolated from the overall learning context. However, there is yet no systematic solution to exchanging and integrating online presence data from diverse instant messaging and social networking applications. To address this issue, we propose an ontology-based approach to sharing online presence data in adaptive learning environments through the use of the Online Presence Ontology. This ontology isdoi:10.1109/cse.2009.286 dblp:conf/cse/JovanovicGSJS09 fatcat:ibywq3qodfguzomgrhfgtphv6a