Author

Samuel Rey

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Preprint Sep 2026

Nonnegative DAG Learning via Concomitant Estimation

We study the problem of learning directed acyclic graphs (DAGs) with nonnegative edge weights from observational data. We propose the Nonnegative and Concomitant (NoCo) DAG estimator, which jointly recovers the weighted graph structure and the exogenous noise variances in the linear structural equation model for the ob...

Madeline Navarro, Gonzalo Mateos, Samuel Rey · 0 citations