Search Results for author: Rohit Bhattacharya

Found 11 papers, 3 papers with code

Proximal Causal Inference With Text Data

1 code implementation12 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.

Causal Inference

RCT Rejection Sampling for Causal Estimation Evaluation

1 code implementation27 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.

Causal Identification

Causal and counterfactual views of missing data models

no code implementations11 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.

Causal Identification Causal Inference +1

On Testability of the Front-Door Model via Verma Constraints

no code implementations1 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.

On Testability and Goodness of Fit Tests in Missing Data Models

no code implementations28 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.

Differentiable Causal Discovery Under Unmeasured Confounding

1 code implementation14 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.

Causal Discovery

Path Dependent Structural Equation Models

no code implementations24 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.

Causal Inference

Full Law Identification In Graphical Models Of Missing Data: Completeness Results

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.

Semiparametric Inference For Causal Effects In Graphical Models With Hidden Variables

no code implementations27 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.

Causal Inference Under Interference And Network Uncertainty

no code implementations29 Jun 2019 Rohit Bhattacharya, Daniel Malinsky, Ilya Shpitser

Classical causal and statistical inference methods typically assume the observed data consists of independent realizations.

Causal Inference

Identification In Missing Data Models Represented By Directed Acyclic Graphs

no code implementations29 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.

Causal Inference

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