2 papers
econ.EM2024
Difference-in-differences with as few as two cross-sectional units -- A new perspective to the democracy-growth debate
Gilles Koumou, Emmanuel Selorm Tsyawo
Pooled panel analyses often mask heterogeneity in unit-specific treatment effects. This challenge, for example, crops up in studies of the impact of democracy on economic growth, w…
q-fin.PM2016
Risk reduction and Diversification within Markowitz's Mean-Variance Model: Theoretical Revisit
Gilles Boevi Koumou
The conventional wisdom of mean-variance (MV) portfolio theory asserts that the nature of the relationship between risk and diversification is a decreasing asymptotic function, wit…