document: Groupme ! This paper presents the GroupMe ! system , a resource sharing system with advanced tagging functionality . GroupMe ! provides a novel user interface , which enables users to organize and arrange arbitrary Web resources into groups . The content of such groups can be overlooked and inspected immediately as resources are visualized in a multimedia-based fashion . In this paper , we furthermore introduce new folksonomy-based ranking strategies that exploit the group structure shipped with GroupMe ! folksonomies . Experiments show that those strategies significantly improve the performance of such ranking algorithms .
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