no code implementations • 12 Jan 2024 • Sourabh Balgi, Adel Daoud, Jose M. Peña, Geoffrey T. Wodtke, Jesse Zhou
As non-parametric causal models, DAGs require no assumptions about the functional form of the hypothesized relationships.
no code implementations • 21 Sep 2023 • Jose M. Peña
This work is devoted to the study of the probability of immunity, i. e. the effect occurs whether exposed or not.
no code implementations • 8 Mar 2023 • Jose M. Peña
We present two methods for bounding the probabilities of benefit and harm under unmeasured confounding.
no code implementations • 15 Sep 2022 • Sourabh Balgi, Jose M. Peña, Adel Daoud
We propose a new sensitivity analysis model that combines copulas and normalizing flows for causal inference under unobserved confounding.
no code implementations • 17 Feb 2022 • Sourabh Balgi, Jose M. Peña, Adel Daoud
Thus, our article shows how c-GNFs further the use of deep learning and causal inference in AI for social good.
no code implementations • 27 Apr 2021 • Jose M. Peña
We present a method for assessing the sensitivity of the true causal effect to unmeasured confounding.
no code implementations • 20 Jan 2021 • Jose M. Peña
Suppose that we are interested in the average causal effect of a binary treatment on an outcome when this relationship is confounded by a binary confounder.
no code implementations • 27 May 2020 • Jose M. Peña
Suppose that we are interested in the average causal effect of a binary treatment on an outcome when this relationship is confounded by a binary confounder.
no code implementations • 12 Feb 2020 • Jose M. Peña
We extend path analysis by showing that, for a singly-connected path diagram, the partial covariance of two random variables factorizes over the nodes and edges in the path between the variables.
no code implementations • 11 Nov 2018 • Jose M. Peña
An intervention may have an effect on units other than those to which it was administered.
no code implementations • 21 Jun 2018 • Jose M. Peña
Specifically, we prove identifiability for the Gaussian structural equation models that can be represented as Andersson-Madigan-Perlman chain graphs (Andersson et al., 2001).
no code implementations • 23 Nov 2017 • Jose M. Peña
However, the directed edges in the essential graph are not necessarily strong or invariant, i. e. they may not be shared by every member of the equivalence class.
no code implementations • 29 Aug 2017 • Jose M. Peña
We introduce a new class of graphical models that generalizes Lauritzen-Wermuth-Frydenberg chain graphs by relaxing the semi-directed acyclity constraint so that only directed cycles are forbidden.
no code implementations • 22 Dec 2016 • Jose M. Peña, Marcus Bendtsen
We introduce a new family of graphical models that consists of graphs with possibly directed, undirected and bidirected edges but without directed cycles.
no code implementations • 4 Dec 2016 • Jose M. Peña
In an independence model, the triplets that represent conditional independences between singletons are called elementary.
no code implementations • 18 Nov 2015 • Jose M. Peña
We extend Andersson-Madigan-Perlman chain graphs by (i) relaxing the semidirected acyclity constraint so that only directed cycles are forbidden, and (ii) allowing up to two edges between any pair of nodes.
no code implementations • 27 Jan 2015 • Jose M. Peña
We address some computational issues that may hinder the use of AMP chain graphs in practice.
no code implementations • 10 Dec 2013 • Jose M. Peña
This paper aims at justifying LWF and AMP chain graphs by showing that they do not represent arbitrary independence models.
no code implementations • 28 Jun 2013 • Jose M. Peña
We will also show that every EAMP CG under marginalization of the error nodes is Markov equivalent to some LWF CG under marginalization of the error nodes, and that the latter is Markov equivalent to some directed and acyclic graph (DAG) under marginalization of the error nodes and conditioning on some selection nodes.
no code implementations • 3 May 2013 • Jose M. Peña
For Gaussian probability distributions, we also show that every MAMP chain graph is Markov equivalent to some directed and acyclic graph with deterministic nodes under marginalization and conditioning on some of its nodes.
no code implementations • 4 Mar 2013 • Jose M. Peña
In particular, we present a constraint based algorithm for learning an AMP chain graph a given probability distribution is faithful to.
no code implementations • 30 Jan 2013 • Jose M. Peña
In Pe\~na (2007), MCMC sampling is applied to approximately calculate the ratio of essential graphs (EGs) to directed acyclic graphs (DAGs) for up to 20 nodes.