15 citations · 32 across the 25 of their papers we have counts for
4 papers · 1 filter
Homomorphism Indistinguishability Beyond Graphs: Relational Weisfeiler--Leman and Hypertree Width
Panagiotis Aivasiliotis, Andreas Göbel, Matthias Lanzinger +1
The Weisfeiler--Leman (WL) algorithm is one of the most influential heuristics for the graph isomorphism problem. The expressive power of WL has been extensively studied in the con…
Using random graphs to sample repulsive Gibbs point processes with arbitrary-range potentials
Tobias Friedrich, Andreas Göbel, Maximilian Katzmann +2
We study computational aspects of repulsive Gibbs point processes, which are probabilistic models of interacting particles in a finite-volume region of space. We introduce an appro…
Algorithms for hard-constraint point processes via discretization
Tobias Friedrich, Andreas Göbel, Maximilian Katzmann +2
We study algorithmic applications of a natural discretization for the hard-sphere model and the Widom-Rowlinson model in a region . These models are…
Zeros and approximations of Holant polynomials on the complex plane
Katrin Casel, Philipp Fischbeck, Tobias Friedrich +2
We present fully polynomial approximation schemes for a broad class of Holant problems with complex edge weights, which we call Holant polynomials. We transform these problems into…