CubeViz: Exploration and Visualization of Statistical Linked Data - Martin, Michael; Abicht, Konrad; Stadler, Claus; Ngonga Ngomo, Axel-Cyrille; Soru, Tommaso; Auer, Sören (Proceedings of the 24th International Conference on World Wide Web Companion, WWW 2015, Florence, Italy, May 18-22, 2015 - Companion Volume)