activity
20102024
most citedThe real cycle class map

11 citations · 30 across the 14 of their papers we have counts for

collaborators

18 papers

cs.CL2024

Local Topology Measures of Contextual Language Model Latent Spaces With Applications to Dialogue Term Extraction

Benjamin Matthias Ruppik, Michael Heck, Carel van Niekerk +5

A common approach for sequence tagging tasks based on contextual word representations is to train a machine learning classifier directly on these embedding vectors. This approach h…

math.KT2023

Atiyah-Segal completion for the Hermitian K-theory of Symplectic Groups

Jens Hornbostel, Herman Rohrbach, Marcus Zibrowius

We study equivariant Hermitian K-theory for representations of symplectic groups, especially . The results are used to establish an Atiyah-Segal completion theorem f…

math.KT2023

An extension of Steinberg's Theorem to biquotient pairs of subgroups

Marcus Zibrowius

We study the derived tensor product of the representation rings of subgroups of a given compact Lie group G. That is, given two such subgroups H_1 and H_2, we study the tensor prod…

cs.CL2022

Dialogue Term Extraction using Transfer Learning and Topological Data Analysis

Renato Vukovic, Michael Heck, Benjamin Matthias Ruppik +3

Goal oriented dialogue systems were originally designed as a natural language interface to a fixed data-set of entities that users might inquire about, further described by domain,…

math.GR2022

Dual involutions in finite Coxeter groups

Marcus Zibrowius

There is a well-known classification of conjugacy classes of involutions in finite Coxeter groups, in terms of subsets of nodes of their Coxeter graphs. In many cases, the product…

math.AT2021

The Witt rings of many flag varieties are exterior algebras

Tobias Hemmert, Marcus Zibrowius

The Witt ring of a complex flag variety describes the interesting -- i.e. torsion -- part of its topological KO-theory. We show that for a large class of flag varieties, these Witt…