11th Polish Symposium on Physics in Economy and Social Sciences

Session

S4

Jul 2, 2021, 9:00 AM

ONLINE

Conveners

S4: S4

• Stanisław Drożdż (Institute of Nuclear Physics Polish Academy of Sciences and Cracow University of Technology, Poland)

59. The `endo-exo' problem in complex systems (ecology, earthquakes, financial volatility, epileptic seizures…) and how to disentangle the long-term memory (Hurst, etc.) from time-varying trends?

Didier Sornette (ETH Zürich)

7/2/21, 9:00 AM

Invited talk (40 min)

The "endo-exo" problem in complex systems (ecology, earthquakes, financial volatility, epileptic seizures…) and how to disentangle the long-term memory (Hurst, etc.) from time-varying trends?

The "endo-exo" problem -- i.e., decomposing system activity into exogenous and endogenous parts -- lies at the heart of statistical identification in many fields of science. E.g., consider the problem...

60. Social anatomy of a financial bubble

Rosario Mantegna (University of Palermo, Italy)

7/2/21, 9:40 AM

Invited talk (40 min)

This work is about the social dynamics observed at the onset and during the evolution of a financial bubble. Our characterization detects demographic trends in the flux of new investors buying the Nokia asset, i.e. the most representative dotcom stock of the Nordic Stock Exchange during the dotcom bubble. We track the flux of new investors entering the market daily, and we yearly compare their...

55. Multiplicity of social attributes enhances Heider interactions in social triads

Janusz Hołyst (Faculty of Physics, Warsaw University of Technology)

7/2/21, 10:20 AM

Invited talk (40 min)

Understanding how people interact, form friendships, and formulate opinions is vital for predicting evolution of social systems.  Heider Balance Theory (HBT)  takes into account dynamics of social triads by considering the well-known rules: a friend of my friend as well as an enemy of my enemy are  my friends, and a friend of my enemy as well as an enemy of my friend are my enemies. To capture...