diviyank/SAM

Code for the Structural Agnostic Model (https://arxiv.org/abs/1803.04929)

Structural Agnostic Modeling: Adversarial Learning of Causal Graphs

This version is the new version of SAM, using structural gates and functional gates

NB: This code is the code of the V2 of SAM, for the lastest (V3), please check the CDT package (https://github.com/FenTechSolutions/CausalDiscoveryToolbox) in the time being

Code in PyTorch. Link to the paper: https://arxiv.org/abs/1803.04929

The (OLD) code of SAM is available at https://github.com/Diviyan-Kalainathan/SAMv1 The first version of the paper is available at https://arxiv.org/abs/1803.04929v1

In order to use SAM:

1. Install the package requirements with pip install -r requirements.txt. For PyTorch visit: http://pytorch.org
2. Install the package with the command: python setup.py develop --user
3. Execute the SAM by including the desired options:

import pandas as pd
from sam import SAM
sam = SAM()
data = pd.read_csv("test/G5_v1_numdata.tab", sep="\t")
output = sam.predict(data, nruns=12) # Recommended if high computational capability available, else nruns=1

We highly recommand to use GPUs if possible. Here is an example for 2 GPUs:

import pandas as pd
from sam import SAM
sam = SAM()
data = pd.read_csv("test/G5_v1_numdata.tab", sep="\t")
output = sam.predict(data, nruns=12, gpus=2, njobs=4) # As the model is small, we recommand using 2 jobs on each GPU

In order to download the datasets used in the paper as well as the generators, download the submodule "datasets" (458MB):

git submodule update --init

The acyclic graphs for the mechanisms Linear, GP Add, GP Mix, Sigmoid Add and Sigmoid Mix were generated using the software provided at : https://github.com/bquast/ANM/tree/master/codeANM