1 code implementation • 12 Jan 2024 • Jacob M. Chen, Rohit Bhattacharya, Katherine A. Keith
Recent text-based causal methods attempt to mitigate confounding bias by including unstructured text data as proxies of confounding variables that are partially or imperfectly measured.
1 code implementation • 27 Jul 2023 • Katherine A. Keith, Sergey Feldman, David Jurgens, Jonathan Bragg, Rohit Bhattacharya
We contribute a new sampling algorithm, which we call RCT rejection sampling, and provide theoretical guarantees that causal identification holds in the observational data to allow for valid comparisons to the ground-truth RCT.
no code implementations • 11 Oct 2022 • Razieh Nabi, Rohit Bhattacharya, Ilya Shpitser, James Robins
It is often said that the fundamental problem of causal inference is a missing data problem -- the comparison of responses to two hypothetical treatment assignments is made difficult because for every experimental unit only one potential response is observed.
no code implementations • 1 Mar 2022 • Rohit Bhattacharya, Razieh Nabi
The front-door criterion can be used to identify and compute causal effects despite the existence of unmeasured confounders between a treatment and outcome.
no code implementations • 28 Feb 2022 • Razieh Nabi, Rohit Bhattacharya
Significant progress has been made in developing identification and estimation techniques for missing data problems where modeling assumptions can be described via a directed acyclic graph.
1 code implementation • 14 Oct 2020 • Rohit Bhattacharya, Tushar Nagarajan, Daniel Malinsky, Ilya Shpitser
In this work, we derive differentiable algebraic constraints that fully characterize the space of ancestral ADMGs, as well as more general classes of ADMGs, arid ADMGs and bow-free ADMGs, that capture all equality restrictions on the observed variables.
no code implementations • 24 Aug 2020 • Ranjani Srinivasan, Jaron Lee, Rohit Bhattacharya, Narges Ahmidi, Ilya Shpitser
Causal analyses of longitudinal data generally assume that the qualitative causal structure relating variables remains invariant over time.
no code implementations • ICML 2020 • Razieh Nabi, Rohit Bhattacharya, Ilya Shpitser
Missing data has the potential to affect analyses conducted in all fields of scientific study, including healthcare, economics, and the social sciences.
no code implementations • 27 Mar 2020 • Rohit Bhattacharya, Razieh Nabi, Ilya Shpitser
We derive influence function based estimators that exhibit double robustness for the identified effects in a large class of hidden variable DAGs where the treatment satisfies a simple graphical criterion; this class includes models yielding the adjustment and front-door functionals as special cases.
no code implementations • 29 Jun 2019 • Rohit Bhattacharya, Daniel Malinsky, Ilya Shpitser
Classical causal and statistical inference methods typically assume the observed data consists of independent realizations.
no code implementations • 29 Jun 2019 • Rohit Bhattacharya, Razieh Nabi, Ilya Shpitser, James M. Robins
Missing data is a pervasive problem in data analyses, resulting in datasets that contain censored realizations of a target distribution.