Search Results for author: Eric Tchetgen Tchetgen

Found 12 papers, 3 papers with code

Efficient and Multiply Robust Risk Estimation under General Forms of Dataset Shift

no code implementations28 Jun 2023 Hongxiang Qiu, Eric Tchetgen Tchetgen, Edgar Dobriban

Despite extensive literature on dataset shift, limited works address how to efficiently use the auxiliary populations to improve the accuracy of risk evaluation for a given machine learning task in the target population.

Domain Adaptation Transfer Learning

Partial Identification of Causal Effects Using Proxy Variables

no code implementations10 Apr 2023 AmirEmad Ghassami, Ilya Shpitser, Eric Tchetgen Tchetgen

However, completeness is well-known not to be empirically testable, and although a bridge function may be well-defined, lack of completeness, sometimes manifested by availability of a single type of proxy, may severely limit prospects for identification of a bridge function and thus a causal effect; therefore, potentially restricting the application of the proximal causal framework.

Causal Inference

Prediction Sets Adaptive to Unknown Covariate Shift

1 code implementation11 Mar 2022 Hongxiang Qiu, Edgar Dobriban, Eric Tchetgen Tchetgen

Predicting sets of outcomes -- instead of unique outcomes -- is a promising solution to uncertainty quantification in statistical learning.

Uncertainty Quantification

Validating Causal Inference Methods

no code implementations9 Feb 2022 Harsh Parikh, Carlos Varjao, Louise Xu, Eric Tchetgen Tchetgen

Thus simulated data sets are used to evaluate the potential performance of various causal estimation methods when applied to data similar to the observed sample.

Causal Inference counterfactual

Combining Experimental and Observational Data for Identification and Estimation of Long-Term Causal Effects

no code implementations26 Jan 2022 AmirEmad Ghassami, Alan Yang, David Richardson, Ilya Shpitser, Eric Tchetgen Tchetgen

We consider the task of identifying and estimating the causal effect of a treatment variable on a long-term outcome variable using data from an observational domain and an experimental domain.

Causal Inference

A General Framework for Treatment Effect Estimation in Semi-Supervised and High Dimensional Settings

no code implementations3 Jan 2022 Abhishek Chakrabortty, Guorong Dai, Eric Tchetgen Tchetgen

Specifically, we consider two such estimands: (a) the average treatment effect and (b) the quantile treatment effect, as prototype cases, in an SS setting, characterized by two available data sets: (i) a labeled data set of size $n$, providing observations for a response and a set of high dimensional covariates, as well as a binary treatment indicator; and (ii) an unlabeled data set of size $N$, much larger than $n$, but without the response observed.

Causal Inference

Causal Inference with Hidden Mediators

1 code implementation4 Nov 2021 AmirEmad Ghassami, Alan Yang, Ilya Shpitser, Eric Tchetgen Tchetgen

In this paper, we extend the proximal causal inference approach to settings where identification of causal effects hinges upon a set of mediators which are not observed, yet error prone proxies of the hidden mediators are measured.

Causal Inference

End-to-End Balancing for Causal Continuous Treatment-Effect Estimation

no code implementations27 Jul 2021 Mohammad Taha Bahadori, Eric Tchetgen Tchetgen, David E. Heckerman

In the process of optimization, these weights are automatically tuned to the specific dataset and causal inference algorithm being used.

Causal Inference

Minimax Kernel Machine Learning for a Class of Doubly Robust Functionals with Application to Proximal Causal Inference

1 code implementation7 Apr 2021 AmirEmad Ghassami, Andrew Ying, Ilya Shpitser, Eric Tchetgen Tchetgen

In this paper, we first extend the class of Robins et al. to include doubly robust IFs in which the nuisance functions are solutions to integral equations.

BIG-bench Machine Learning Causal Inference +1

On a necessary and sufficient identification condition of optimal treatment regimes with an instrumental variable

no code implementations7 Oct 2020 Yifan Cui, Eric Tchetgen Tchetgen

Unmeasured confounding is a threat to causal inference and individualized decision making.

Statistics Theory Methodology Statistics Theory

A semiparametric instrumental variable approach to optimal treatment regimes under endogeneity

no code implementations21 Nov 2019 Yifan Cui, Eric Tchetgen Tchetgen

There is a fast-growing literature on estimating optimal treatment regimes based on randomized trials or observational studies under a key identifying condition of no unmeasured confounding.

Robust classification

Selective machine learning of doubly robust functionals

no code implementations5 Nov 2019 Yifan Cui, Eric Tchetgen Tchetgen

While model selection is a well-studied topic in parametric and nonparametric regression or density estimation, selection of possibly high-dimensional nuisance parameters in semiparametric problems is far less developed.

BIG-bench Machine Learning Causal Inference +2

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