BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//Memento EPFL//
BEGIN:VEVENT
SUMMARY:Neuro-X seminar: Dr Iacopini\, Modeling the social dynamics of con
 tagion and discovery on complex networks
DTSTART:20221125T100000
DTEND:20221125T110000
DTSTAMP:20260930T202856Z
UID:b5d3ec3ab718eb069fe36a52cc5ca534e74d614d86d63c08f53dd1ff
CATEGORIES:Conferences - Seminars
DESCRIPTION:Iacopo Iacopini\n\nAdoption processes in socio-technological s
 ystems have been widely studied both empirically and theoretically. In thi
 s talk\, I will focus on network approaches that aim at capturing and mode
 ling the fundamental mechanisms behind the social dynamics of adoption. Th
 e adoption of ideas\, or behaviors\, can be described both as an explorati
 on dynamics on a network of ideas that individuals can adopt (or discover)
 \, and as contagion dynamics on a network of individuals influencing one a
 nother [1].\nI will start by considering an individual (or a community) an
 d model the dynamics of discovery as movements over an a priori existing n
 etwork of interlinked concepts. Starting from the empirically observed dyn
 amics of correlated novelties\, I will present a reinforced-random-walk mo
 del [2] in which the exploration of an individual of the space of possible
  discoveries has the byproduct of influencing also the strengths of their 
 connections. I will then move to interacting discovery processes [3] to in
 vestigate how social interactions contribute to the emergence of novelties
 \, and explorers can exploit opportunities (possible discoveries) coming f
 rom their social contacts.\nIn the second part of the talk\, I will consid
 er a single idea\, or behavior\, and model its transmission from one indiv
 idual to another\, in an epidemic-like fashion. Recent evidence has shown 
 that mechanisms of complex contagion can effectively capture the fundament
 al rules of social reinforcement and peer pressure characterizing social s
 ystems. Along this line\, I'll discuss the idea of complex recovery [4]\, 
 in which the social influence mechanism acts on the recovery rule rather t
 han on the infection one. Yet\, in social systems\, interactions can occur
  in groups of three or more nodes that cannot be simply described in terms
  of dyads. Thus\, I will expand the pairwise representation given by graph
 s in favor of a non-pairwise one [5\, 6]. With this in mind\, I will gener
 alize two models of social contagion [7] and norm emergence [8]\, showing 
 how the inclusion of these higher-order group interactions can dramaticall
 y alter the dynamics and lead to the emergence of novel phenomena\, such a
 s discontinuous transitions\, critical mass effects\, and minority takeove
 r.\n \n\n[1] Iacopini\, I.\, & Latora\, V. (2021). On the dual nature of 
 adoption processes in complex networks. Frontiers in Physics\, 9\, 604102.
 \n[2] Iacopini\, I.\, Milojević\, S.\, & Latora\, V. (2018). Network dyna
 mics of innovation processes. Physical Review Letters\, 120(4)\, 048301.\n
 [3] Iacopini\, I.\, Di Bona\, G.\, Ubaldi\, E.\, Loreto\, V.\, & Latora\, 
 V. (2020). Interacting discovery processes on complex networks. Physical R
 eview Letters\, 125(24)\, 248301.\n[4] Iacopini\, I.\, Schäfer\, B.\, Arc
 aute\, E.\, Beck\, C.\, & Latora\, V. (2020). Multilayer modeling of adopt
 ion dynamics in energy demand management. Chaos\, 30(1)\, 013153.\n[5] Bat
 tiston\, F.\, Cencetti\, G.\, Iacopini\, I.\, Latora\, V.\, ... & Petri\, 
 G. (2020). Networks beyond pairwise interactions: structure and dynamics. 
 Physics Reports\, 874\, 1-92.\n[6] Battiston\, F.\, Amico\, E.\, Barrat\, 
 A.\, Bianconi\, ... & Petri\, G. (2021). The physics of higher-order inter
 actions in complex systems. Nature Physics\, 17(10)\, 1093-1098.\n[7] Iaco
 pini\, I.\, Petri\, G.\, Barrat\, A.\, & Latora\, V. (2019). Simplicial mo
 dels of social contagion. Nature Communications\, 10(1)\, 1-9.\n[8] Iacopi
 ni\, I.\, Petri\, G.\, Baronchelli\, A.\, & Barrat\, A. (2022). Group inte
 ractions modulate critical mass dynamics in social convention. Communicati
 ons Physics\, 5(1)\, 1-10.
LOCATION:H4-02-A https://plan.epfl.ch//?room==H4%202%20232.080 https://epf
 l.zoom.us/j/63916410044?pwd=ckhUTzdvS1BueW1vUURidHZPdmpxdz09
STATUS:CONFIRMED
END:VEVENT
END:VCALENDAR