Zobrazeno 1 - 10
of 147
pro vyhledávání: '"Haller, Stefan"'
Autor:
Haller, Stefan, Savchynskyy, Bogdan
We propose a scalable approximate algorithm for the NP-hard maximum-weight independent set problem. The core of our algorithm is a dual coordinate descent applied to a smoothed LP relaxation of the problem. This technique is referred to as Bregman me
Externí odkaz:
http://arxiv.org/abs/2408.02086
Autor:
Haller, Stefan, Vizman, Cornelia
We use cotangent bundles of spaces of smooth embeddings to construct symplectic dual pairs involving the group of volume preserving diffeomorphisms. Via symplectic reduction we obtain descriptions of coadjoint orbits of this group in terms of nonline
Externí odkaz:
http://arxiv.org/abs/2405.10737
Autor:
Haller, Stefan
We consider generic rank two distributions on 5-dimensional nilmanifolds, and show that the analytic torsion of their Rumin complex coincides with the Ray-Singer torsion.
Comment: v2: minor corrections in the proof of Lemma 9; dropped Remark 4;
Comment: v2: minor corrections in the proof of Lemma 9; dropped Remark 4;
Externí odkaz:
http://arxiv.org/abs/2311.16647
Autor:
Haller, Stefan
We study the Rumin differentials of the 5-dimensional graded nilpotent Lie group that appears as osculating group of generic rank two distributions in dimension five. In irreducible unitary representations of this group, the Rumin differentials provi
Externí odkaz:
http://arxiv.org/abs/2309.11159
Autor:
Haller, Stefan, Vizman, Cornelia
Publikováno v:
Can. J. Math.-J. Can. Math. 76 (2024) 1664-1694
A weighted nonlinear flag is a nested set of closed submanifolds, each submanifold endowed with a volume density. We study the geometry of Frechet manifolds of weighted nonlinear flags, in this way generalizing the weighted nonlinear Grassmannians. W
Externí odkaz:
http://arxiv.org/abs/2301.00428
Autor:
Haller, Stefan, Feineis, Lorenz, Hutschenreiter, Lisa, Bernard, Florian, Rother, Carsten, Kainmüller, Dagmar, Swoboda, Paul, Savchynskyy, Bogdan
The graph matching optimization problem is an essential component for many tasks in computer vision, such as bringing two deformable objects in correspondence. Naturally, a wide range of applicable algorithms have been proposed in the last decades. S
Externí odkaz:
http://arxiv.org/abs/2207.00291
Automated short answer grading (ASAG) has gained attention in education as a means to scale educational tasks to the growing number of students. Recent progress in Natural Language Processing and Machine Learning has largely influenced the field of A
Externí odkaz:
http://arxiv.org/abs/2204.03503
Autor:
Haller, Stefan
Publikováno v:
J. Geom. Anal. 32, 248 (2022)
We propose an analytic torsion for the Rumin complex associated with generic rank two distributions on closed 5-manifolds. This torsion behaves as expected with respect to Poincare duality and finite coverings. We establish anomaly formulas, expressi
Externí odkaz:
http://arxiv.org/abs/2107.02062
Autor:
Hutschenreiter, Lisa, Haller, Stefan, Feineis, Lorenz, Rother, Carsten, Kainmüller, Dagmar, Savchynskyy, Bogdan
We contribute to approximate algorithms for the quadratic assignment problem also known as graph matching. Inspired by the success of the fusion moves technique developed for multilabel discrete Markov random fields, we investigate its applicability
Externí odkaz:
http://arxiv.org/abs/2101.12085
Autor:
Haller, Stefan, Prakash, Mangal, Hutschenreiter, Lisa, Pietzsch, Tobias, Rother, Carsten, Jug, Florian, Swoboda, Paul, Savchynskyy, Bogdan
We propose a fast approximate solver for the combinatorial problem known as tracking-by-assignment, which we apply to cell tracking. The latter plays a key role in discovery in many life sciences, especially in cell and developmental biology. So far,
Externí odkaz:
http://arxiv.org/abs/2004.06375