Search Results for author: Bryan Andrews

Found 8 papers, 3 papers with code

Causal Discovery for fMRI data: Challenges, Solutions, and a Case Study

no code implementations20 Dec 2023 Eric Rawls, Bryan Andrews, Kelvin Lim, Erich Kummerfeld

Designing studies that apply causal discovery requires navigating many researcher degrees of freedom.

Causal Discovery

Fast Scalable and Accurate Discovery of DAGs Using the Best Order Score Search and Grow-Shrink Trees

1 code implementation26 Oct 2023 Bryan Andrews, Joseph Ramsey, Ruben Sanchez-Romero, Jazmin Camchong, Erich Kummerfeld

However, the accuracy and execution time of learning algorithms generally struggle to scale to problems with hundreds of highly connected variables -- for instance, recovering brain networks from fMRI data.

Causal Discovery

Py-Tetrad and RPy-Tetrad: A New Python Interface with R Support for Tetrad Causal Search

2 code implementations13 Aug 2023 Joseph D. Ramsey, Bryan Andrews

With the addition of some simple tools and the provision of working examples for both Python and R, using JPype and Reticulate to interface Python and R with Tetrad is straightforward and intuitive.

The m-connecting imset and factorization for ADMG models

no code implementations18 Jul 2022 Bryan Andrews, Gregory F. Cooper, Thomas S. Richardson, Peter Spirtes

The m-connecting imset and factorization criterion provide two new statistical tools for learning and inference with ADMG models.

Greedy Relaxations of the Sparsest Permutation Algorithm

1 code implementation11 Jun 2022 Wai-Yin Lam, Bryan Andrews, Joseph Ramsey

There has been an increasing interest in methods that exploit permutation reasoning to search for directed acyclic causal models, including the "Ordering Search" of Teyssier and Kohler and GSP of Solus, Wang and Uhler.

Learning Latent Causal Structures with a Redundant Input Neural Network

no code implementations29 Mar 2020 Jonathan D. Young, Bryan Andrews, Gregory F. Cooper, Xinghua Lu

We developed a deep learning model, which we call a redundant input neural network (RINN), with a modified architecture and a regularized objective function to find causal relationships between input, hidden, and output variables.

Causal Discovery

FASK with Interventional Knowledge Recovers Edges from the Sachs Model

no code implementations6 May 2018 Joseph Ramsey, Bryan Andrews

We report a procedure that, in one step from continuous data with minimal preparation, recovers the graph found by Sachs et al. \cite{sachs2005causal}, with only a few edges different.

A Comparison of Public Causal Search Packages on Linear, Gaussian Data with No Latent Variables

no code implementations13 Sep 2017 Joseph D. Ramsey, Bryan Andrews

We compare Tetrad (Java) algorithms to the other public software packages BNT (Bayes Net Toolbox, Matlab), pcalg (R), bnlearn (R) on the \vanilla" task of recovering DAG structure to the extent possible from data generated recursively from linear, Gaussian structure equation models (SEMs) with no latent variables, for random graphs, with no additional knowledge of variable order or adjacency structure, and without additional specification of intervention information.

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