no code implementations • 28 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.
no code implementations • 10 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.
1 code implementation • 11 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.
no code implementations • 9 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.
no code implementations • 26 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.
no code implementations • 3 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.
1 code implementation • 4 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.
no code implementations • 27 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.
1 code implementation • 7 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.
no code implementations • 7 Oct 2020 • Yifan Cui, Eric Tchetgen Tchetgen
Unmeasured confounding is a threat to causal inference and individualized decision making.
Statistics Theory Methodology Statistics Theory
no code implementations • 21 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.
no code implementations • 5 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.