 Fan Li

Fan Li is the Duke Statistical Science researcher who coauthored Balancing Covariates via Propensity Score Weighting by Fan Li, Kari Lock Morgan and Alan M. Zaslavsky. Her author homepage and the paper's institutional byline identify this particular researcher.^[ref]

For propensity score $e(X)$, overlap weights assign weight $1-e(X)$ to a treated person and $e(X)$ to an untreated person. These bounded weights emphasize shared treatment eligibility and target a population with density proportional to $e(X)(1-e(X))$. Causal interpretation still requires the relevant no unmeasured confounding assumption and positivity in causal inference.^[ref]