2 papers
math.CO2025
Arithmetic Circuits and Neural Networks for Regular Matroids
Christoph Hertrich, Stefan Kober, Georg Loho
We prove that there exist uniform -circuits of size to compute the basis generating polynomial of regular matroids on elements. By tropicalization, this…
cs.LG2025
Radius-Guided Post-Clustering for Shape-Aware, Scalable Refinement of k-Means Results
Stefan Kober
Traditional k-means clustering underperforms on non-convex shapes and requires the number of clusters k to be specified in advance. We propose a simple geometric enhancement: after…