2 papers
stat.ML2025
Robust and Sparse Estimation of Unbounded Density Ratio under Heavy Contamination
Ryosuke Nagumo, Hironori Fujisawa
We examine the non-asymptotic properties of robust density ratio estimation (DRE) in contaminated settings. Weighted DRE is the most promising among existing methods, exhibiting do…
stat.ME2021
Outlier-Resistant Estimators for Average Treatment Effect in Causal Inference
Kazuharu Harada, Hironori Fujisawa
The inverse probability (IPW) and doubly robust (DR) estimators are often used to estimate the average causal effect (ATE), but are vulnerable to outliers. The IPW/DR median can be…