Outline
  • Introduction
  • ProjCloud Technique
  • Results and Comparisons
  • Discussion and Limitations
  • Conclusion
        Introduction
  • Word Cloud
      • Two issues of word cloud:
      •  (1) Existing methods do not yet provide an intuitive visual 
         representation that allows to link words on the layout to the 
         documents they are meant to represent.
      •  (2) The construction of word clouds inside general polygons 
         with semantical preservation between words.
       • Contributions:
       •   A novel word cloud-based visualization technique, named ProjCloud.
       •   (1) combine multidumensional projection and word clouds, which enables to 
           visualize the similarity among documents as well as their corresponding word 
           clouds, extend the exploratory capabilities of the word clouds.
       •   (2) A new approach for building word clouds inside polygons while still preserving 
           the semantic relationship among keywords.
       •   (3) A mechanism based on spectral sorting that allows arranging words according 
           to their semantic relationship as well as highlighting the most important words in 
           the cloud.
      ProjCloud Technique
  • Overview of the sequence of steps