no code implementations • 7 Dec 2022 • Alexandre Belloni, Fei Fang, Alexander Volfovsky
In contrast to previous work, the proposed procedure aims to approximate the relevant network interference patterns.
no code implementations • 4 Dec 2019 • Alexandre Belloni, Mingli Chen, Oscar Hernan Madrid Padilla, Zixuan, Wang
We propose a generalization of the linear panel quantile regression model to accommodate both \textit{sparse} and \textit{dense} parts: sparse means while the number of covariates available is large, potentially only a much smaller number of them have a nonzero impact on each conditional quantile of the response variable; while the dense part is represent by a low-rank matrix that can be approximated by latent factors and their loadings.
no code implementations • 14 Aug 2018 • Baris Ata, Alexandre Belloni, Ozan Candogan
A subset of the agents participate on a platform, and hence, are observable to it.
no code implementations • 28 Jan 2015 • Alexandre Belloni, Tengyuan Liang, Hariharan Narayanan, Alexander Rakhlin
We consider the problem of optimizing an approximately convex function over a bounded convex set in $\mathbb{R}^n$ using only function evaluations.
no code implementations • 22 Dec 2014 • Alexandre Belloni, Mathieu Rosenbaum, Alexandre B. Tsybakov
Under the first assumption, the rates of convergence of the proposed estimators depend explicitly on $\bar \delta$, while the second assumption has been applied when an estimator for the second moment of the observational error is available.
no code implementations • 11 Nov 2013 • Alexandre Belloni, Victor Chernozhukov, Ivan Fernández-Val, Christian Hansen
In the latter case, our approach produces efficient estimators and honest bands for (functional) average treatment effects (ATE) and quantile treatment effects (QTE).