Event
Statistical Physics of Opinion Formation & Collective Decision-Making
- 14 - 15 October 2024
- Expired!
- All Day
Location
Organizer(s)
- Attendance: on site
- Language: EN
Event
Statistical Physics of Opinion Formation & Collective Decision-Making
Collective decision-making and related problems of opinion formation can be mapped to the phenomenon of spontaneous symmetry breaking, with respect to the emergence of a dominant consensus opinion. Thus, over the past decades, various models of corresponding processes have been proposed that were strongly inspired – if not directly analogous – to established models for phase transitions in (equilibrium) statistical physics, such as the Ising model. Despite this past research offering important insights, several fundamental questions remain open: 1) regarding the relevance of idealized physical models (e.g., spin models) for real-world collective decision-making phenomena and their
relation to individual-level psychological mechanisms, and 2) the implication of the non-equilibrium, often non-stationary, nature of these processes for their theoretical treatment.
The aim of the workshop is to have besides presentations by participants a significant proportion of the time dedicated to discussions and collaborative work on advancing important conceptual questions in the field. Possible research questions to be addressed: Fluctuation-dissipation relations (FDR) & non-reciprocity in collective decision making; Origin of stochasticity in collective decision-making and the notion of effective temperature; Mechanisms of self-organized tuning towards/away from critical points; Theoretical treatment of non-stationary collective dynamics.

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Timetable
Hourly Schedule
October 14
- 10:00 - 10:30
- Opening Remarks
- 10:30 - 10:50
- Self-Organized Criticality in Complex Systems
- Bosiljka Tadic
- 10:50 - 11:10
- Multilevel Information Overload: Measures, Models and Mitigation
- Janusz Hołyst
- 11:10 - 11:30
- Homophily-Based Social Group Formation in a Spin Glass Self-Assembly Framework
- Jan Korbel
- 11:30 - 11:50
- Networks of Beliefs: An Integrative Theory of Individual- and Social-Level Belief Dynamics
- Henrik Olsson
- 11:50 - 12:10
- Ising model with variable spin/agent strengths: an account of agent diversity and its impact on collective behaviour
- Yurij Holovatch
- 12:10 - 12:30
- Collective decision making with heterogeneous preference, local non-linearity and noise
- Pawel Romanczuk
- 12:30 - 14:00
- Lunch Break
- 14:00 - 15:45
- Discussion Session
- Fluctuation-dissipation relations (FDR) & non-reciprocity in collective decision making
- 15:45 - 16:15
- Coffee Break
- 16:15 - 18:00
- Discussion Session
- Self-organized tuning towards/away from critical points - Relevance and Mechanisms
October 15
- 09:00 - 09:20
- Adaptation under Non-equilibrium Genotype-Phenotype Maps: a Statistical Physics Approach
- Tuan Pham Minh
- 09:20 - 09:40
- Opinion depolarization of interdependent topics in heterogeneous social interactions
- Romualdo Pastor-Satorras
- 09:40 - 10:00
- Imitation, democratic leadership, and collective intelligence in groups of sheep
- Fernando Peruani
- 10:00 - 10:20
- Spin model with global inhibition for decision making in the brain
- Nir Gov
- 10:20 - 10:40
- Neural tuning for collective decisions
- Bryan Daniels
- 10:40 - 11:00
- Coffee Break
- 11:00 - 12:30
- Discussion Session
- Origin of stochasticity in collective decision making and the notion of effective temperature
- 12:30 - 14:00
- Lunch Break
- 14:00 - 15:45
- Discussion Session
- 15:45 - 16:15
- Coffee Break
- 16:15 - 16:45
- After a Century: A New Look into Ising’s Thesis
- Reinhard Folk
- 16:45 - 18:00
- Closing Session