Distributional Random Forests for Complex Survey Designs on Reproducing Kernel Hilbert Spaces

A recent study has introduced an extension of the Riesz representation framework to enhance causal inference in sample selection models, addressing non-random treatment assignment and outcome observability. The research employs the ForestRiesz estimator to provide stable estimations and decompose omitted variable bias into three components, demonstrating improved performance over traditional double machine learning methods.

The Pentagon is reportedly testing a radio wave device that may be linked to the controversial condition known as 'Havana Syndrome,' which has affected U.S. officials stationed in Cuba, presenting a range of unexplained symptoms.