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Poverty Lines and Spatial Differences in the Cost of Living

This paper proposes a new method for estimating a full-coverage spatial price index using data typically available in household budget surveys. The food component of the index is estimated at the household level using reported expenditures and …

Minimum Hellinger estimation of Stochastic Frontier models

This research introduces a minimum Hellinger divergence estimator for stochastic frontier models. The study establishes the strong consistency and asymptotic normality of this estimator under certain regularity conditions. Furthermore, it explores …

Grouped patterns of heterogeneity across time and space: A hierarchical clustering approach

Robust estimation and the impact of outliers on causal Inference

In recent decades, the estimation of causal effects has attracted increasing professional interest. However, the success of this effort depends on the ability to generate precise estimates that can aid in the implementation of new laws and …

Treatment Spillover Effects with Group Size Variation: Evidence from Lesotho

Estimation of stochastic frontier models with spatial inefficiency

This paper proposes a stochastic frontier panel data model in which unit-specific inefficiencies are spatially correlated. In particular, this model has simultaneously three important features: i) the total inefficiency of a productive unit depends …