2 code implementations • 13 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.
1 code implementation • 17 Aug 2021 • Joseph D. Ramsey
The Sparsest Permutation (SP) algorithm is accurate but limited to about 9 variables in practice; the Greedy Sparest Permutation (GSP) algorithm is faster but less weak theoretically.
no code implementations • 8 Aug 2019 • Ruben Sanchez-Romero, Joseph D. Ramsey, Kun Zhang, Clark Glymour
These algorithms allow for identification of subregions of voxels driving the connectivity between regions of interest, recovering valuable anatomical and functional information that is lost when ROIs are aggregated.
no code implementations • 13 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.
1 code implementation • 9 Apr 2017 • Andrew J Sedgewick, Joseph D. Ramsey, Peter Spirtes, Clark Glymour, Panayiotis V. Benos
Graphical causal models are an important tool for knowledge discovery because they can represent both the causal relations between variables and the multivariate probability distributions over the data.
no code implementations • 27 Jul 2016 • Joseph D. Ramsey, Daniel Malinsky, Kevin V. Bui
In this report we describe a tool for comparing the performance of graphical causal structure learning algorithms implemented in the TETRAD freeware suite of causal analysis methods.
no code implementations • 28 Jul 2015 • Joseph D. Ramsey
As standardly implemented in R or the Tetrad program, causal search algorithms used most widely or effectively by scientists have severe dimensionality constraints that make them inappropriate for big data problems without sacrificing accuracy.
no code implementations • 7 May 2015 • Joseph D. Ramsey
Liu, et al., 2009 developed a transformation of a class of non-Gaussian univariate distributions into Gaussian distributions.
no code implementations • 20 Jan 2014 • Joseph D. Ramsey
Among these, perhaps the most efficient has been KCI (Kernel Conditional Independence, Zhang et al. (2011)), with computational requirements that grow effectively at least as O(N3), placing it out of range of large sample size analysis, and restricting its applicability to high dimensional data sets.