Quantifying the diaspora of knowledge in the last century

Manlio De Domenico*, Elisa Omodei, Alex Arenas

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract (may include machine translation)

Academic research is driven by several factors causing different disciplines to act as “sources” or “sinks” of knowledge. However, how the flow of authors’ research interests – a proxy of human knowledge – evolved across time is still poorly understood. Here, we build a comprehensive map of such flows across one century, revealing fundamental periods in the raise of interest in areas of human knowledge. We identify and quantify the most attractive topics over time, when a relatively significant number of researchers moved from their original area to another one, causing what we call a “diaspora of the knowledge” towards sinks of scientific interest, and we relate these points to crucial historical and political events. Noticeably, only a few areas – like Medicine, Physics or Chemistry – mainly act as sources of the diaspora, whereas areas like Material Science, Chemical Engineering, Neuroscience, Immunology and Microbiology or Environmental Science behave like sinks.

Original languageEnglish
Article number15
JournalApplied Network Science
Volume1
Issue number1
DOIs
StatePublished - 1 Dec 2016
Externally publishedYes

Keywords

  • Big data
  • Complex networks
  • Diffusion
  • Human knowledge
  • Interconnected networks

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