This network diagram represents the relationships between 1.6 million scientific articles. Each node represents scientific publications on a topic (more accurately called a paradigm). There are 776 nodes in all, distributed in this ring-like structure.
Mario Aehnelt, Hans-Jörg Schulz, and Bodo Urban. Advances in Visual Computing: 9th International Symposium, ISVC 2013, Rethymnon, Crete, Greece, Proceedings, Part II, volume 8034 of Lecture Notes in Computer Science, Springer, Berlin, (2013)