5 papers · 1 filter
Pulses, waves, and cascades in collective migration dynamics
Niraj Kushwaha, Woi Sok Oh, Edward D. Lee
Decisions to migrate depend on others' decisions. Dependence can produce nontrivial dynamics. We propose a minimal migration model that accounts for social influence alongside indi…
Collective contributions to polarized voting
Edward D. Lee
The crux of polarized voting in institutions like legislatures or courts is separation along a unidimensional ideological axis, but voting behavior is in reality more complex, with…
Common indicators hurt armed conflict prediction
Niraj Kushwaha, Woi Sok Oh, Shlok Shah +1
Are big conflicts different from small or medium size conflicts? To answer this question, we leverage fine-grained conflict data, which we map to climate, geography, infrastructure…
Sensitivity of collective outcomes identifies pivotal components
Edward D. Lee, Daniel M. Katz, Michael J. Bommarito +1
A social system is susceptible to perturbation when its collective properties depend sensitively on a few pivotal components. Using the information geometry of minimal models from…
Emergent regularities and scaling in armed conflict data
Edward D. Lee, Bryan C. Daniels, Christopher R. Myers +2
Armed conflict exhibits regularities beyond known power law distributions of fatalities and duration over varying culture and geography. We systematically cluster conflict reports…