Retrieval of Diverse Images by Pre-filtering and Hierarchical Clustering

@inproceedings{DangNguyen2014RetrievalOD,
  title={Retrieval of Diverse Images by Pre-filtering and Hierarchical Clustering},
  author={Duc-Tien Dang-Nguyen and Luca Piras and Giorgio Giacinto and Giulia Boato and Francesco G. B. De Natale},
  booktitle={MediaEval},
  year={2014}
}
In this paper, we describe our approach and its results for MediaEval 2014 Retrieving Diverse Social Images Task. The basic idea of our proposed method is to filter out non-relevant images at the beginning of the process and then construct a hierarchical tree which allows to cluster the images with different criteria on visual and textual features. Experimental results shown that it is stable and has little fluctuation with the number of topics. 
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