p2pfoundation has an interesting post about the importance of time as a dimension in social networking technology. My concept of RhNav - RhizomeNavigation includes some of these thoughts...
A pre-relational databases datamodel. "Preceeded" by the relational model since the flexibility of this makes it hard to work with. Now re-invented in RDF :)
M. Atzmueller, A. Schmidt, B. Kloepper, and D. Arnu. New Frontiers in Mining Complex Patterns. Postproceedings NFMCP 2016, volume 10312 of LNAI, Berlin/Heidelberg, Germany, Springer Verlag, (2017)