|Title||In & out zooming on time-aware user/tag clusters|
|Publication Type||Journal Article|
|Year of Publication||2012|
|Authors||Giannakidou, Eirini, Vassiliki A. Koutsonikola, Athena Vakali, and Yiannis Kompatsiaris|
|Journal||J. Intell. Inf. Syst.|
|Keywords||Events, Social tagging systems, Time-aware clustering, Users' interests over time|
The common ground behind most approaches that analyze social taggingsystems is addressing the information challenge that emerges from the massiveactivity of millions of users who interact and share resources and/or metadata online.However, lack of any time-related data in the analysis process implicitly deniesmuch of the dynamic nature of social tagging activity. In this paper we claim thatholding a temporal dimension, allows for tracking macroscopic and microscopicusersâ€™ interests, detecting emerging trends and recognizing events. To this end, wepropose a time-aware co-clustering approach for acquiring semantic and temporalpatterns out of the tagging activity. The resulted clusters contain both users and tagsof similar patterns over time, and reveal non-obvious or â€śhiddenâ€ť relations amongusers and topics of their common interest. Zoom in & out views serve as visualizationmethods on different aspects of the clustersâ€™ structure, in order to evaluate theefficiency of the approach.