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Differing Roles of Leisure and Productivity in GDP - A Machine Learning based comparative analysis of Germany and USA
Announce Type: cross Abstract: The GDP of a country is modelled as the relative interaction between two agents - working hours, reflecting the social choice of a population, and Total Factor Productivity, reflecting the collective investment in productivity enhancers. It is shown that a Random Forest model can accu- rately predict the GDP from these two factors. The differences in the choices made by Germany and USA are analysed though Gini importance, SHAP plots and partial dependency.
Differing Roles of Leisure and Productivity in GDP - A Machine Learning based comparative analysis of Germany and USA
Announce Type: cross Abstract: The GDP of a country is modelled as the relative interaction between two agents - working hours, reflecting the social choice of a population, and Total Factor Productivity, reflecting the collective investment in productivity enhancers. It is shown that a Random Forest model can accu- rately predict the GDP from these two factors. The differences in the choices made by Germany and USA are analysed though Gini importance, SHAP plots and partial dependency.
Emergent Workload Inequality in Collective Excavation
Announce Type: replace Abstract: Living collectives and artificial swarms frequently employ a division of labor, wherein individuals take on different tasks or perform different amounts of work. However, the mechanisms used by collectives to divide labor remain poorly understood. Here, we study how workload inequality arises in collectives by monitoring excavation in Solenopsis invicta fire ants, whose coordination in constrained environments makes them an attractive system for studying...
Persistent Structural Inequality of Online Interactions Across Platforms
Announce Type: new Abstract: User interactions on social media platforms are unevenly distributed: a small subset of users consistently captures most of the activity, while the majority remains marginal. Although this pattern is well known and often described by power-law distributions, its consistency across time, platforms, and interaction types has not been systematically assessed. In this study, we analyze user-post bipartite networks from multiple social media platforms.
Persistent Structural Inequality of Online Interactions Across Platforms
Announce Type: cross Abstract: User interactions on social media platforms are unevenly distributed: a small subset of users consistently captures most of the activity, while the majority remains marginal. Although this pattern is well known and often described by power-law distributions, its consistency across time, platforms, and interaction types has not been systematically assessed. In this study, we analyze user-post bipartite networks from multiple social media platforms.
Brain scans reveal two distinct types of autism
Brain scans reveal two distinct types of autism Scientists have revealed two hidden brain-based forms of autism, a breakthrough that could help tailor future treatments to each person's biology. - Date: - June 3, 2026 - Source: - Istituto Italiano di Tecnologia - IIT - Summary: - Scientists have uncovered evidence that autism may include at least two biologically distinct subtypes, each marked by a different pattern of brain communication.
4K years ago, Mohenjo-daro grew more equal over time
For decades, archaeologists argued that cities grew alongside inequality. As settlements expanded, wealth often moved toward rulers, priests, and elite families. A new study on Mohenjo-daro presents a different story.
Relations Among Different Inequality Measures in Complex Systems: From Kinetic Exchange to Earthquake Models
arXiv:2512.18408v4 Announce Type: replace Abstract: We present a numerical study of several inequality measures across two kinetic wealth exchange models with extreme inequality features (namely the Banerjee model, and the Chakraborti or Yard Sale model) and two earthquake simulating models (namely the Chakrabarti Stinchcombe two fractal overlap model and the nonlinear dynamical Burridge Knopoff model). For each model we compute numerically the Lorenz function for the respective models...