3 citations · 5 across the 6 of their papers we have counts for
6 papers
Distributional Equivalence in Linear Non-Gaussian Latent-Variable Cyclic Causal Models: Characterization and Learning
Haoyue Dai, Immanuel Albrecht, Peter Spirtes +1
Causal discovery with latent variables is a fundamental task. Yet most existing methods rely on strong structural assumptions, such as enforcing specific indicator patterns for lat…
Contributions to the Problems of Recognizing and Coloring Gammoids
Immanuel Albrecht
This work provides a thorough introduction to the field of gammoids and presents new results that are considered helpful for solving the problems of recognizing and coloring gammoi…
Heavy Arc Orientations of Gammoids
Immanuel Albrecht
In this work, we introduce a purely combinatorial way to obtain realizable orientations of a gammoid from a total order on the arc set of the digraph representing it, without first…
Well-Scaling Procedure for Deciding Gammoid Class-Membership of Matroids
Immanuel Albrecht
We introduce a procedure that solves the decision problem whether a given matroid M is a gammoid. The procedure consists of three pieces: First, we introduce a notion of a valid ma…
Lattice Path Matroids are 3-Colorable
Immanuel Albrecht, Winfried Hochstättler
We show that every lattice path matroid of rank at least two has a quite simple coline, also known as a positive coline. Therefore every orientation of a lattice path matroid is 3-…
Duality Respecting Representations and Compatible Complexity Measures for Gammoids
Immanuel Albrecht
We show that every gammoid has special digraph representations, such that a representation of the dual of the gammoid may be easily obtained by reversing all arcs. In an informal s…